Oxidation behaviour of a MoSiBTiC alloy coated by a (Si+B) co-deposition pack cementation method Peer-reviewed

Xi Nan, Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi, John H. Perepezko

Corrosion Science　214　110990-110990　2023/01

DOI： 10.1016/j.corsci.2023.110990 　

ISSN： 0010-938X

Liquidus projection and solidification paths in the Zr-Si-Al ternary system Peer-reviewed

Nobuaki Sekido, Kazumasa Soeta, Kyosuke Yoshimi

Journal of Alloys and Compounds　885　2021/12/10

DOI： 10.1016/j.jallcom.2021.160911 　

ISSN： 0925-8388

Evolution of boron segregation during tempering in B doped 9%Cr ferritic steel Peer-reviewed

Takumi Osanai, Nobuaki Sekido, Mitsuharu Yonemura, Kouichi Maruyama, Miyuki Takeuchi, Kyosuke Yoshimi

Materials Characterization　177　2021/07

DOI： 10.1016/j.matchar.2021.111192 　

ISSN： 1044-5803

Changes in strengthening mechanisms in creep of 9Cr-1.8W-0.5Mo-VNb steel tested over wide ranges of creep conditions Peer-reviewed

Kouichi Maruyama, Nobuaki Sekido, Kyosuke Yoshimi

International Journal of Pressure Vessels and Piping　190　2021/04

DOI： 10.1016/j.ijpvp.2021.104312 　

ISSN： 0308-0161

Effect of Cr and Al alloying on the oxidation resistance of a Ti<inf>5</inf>Si<inf>3</inf>-incorporated MoSiBTiC alloy Peer-reviewed

Xi Nan, Tomotaka Hatakeyama, Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi

High Temperature Materials and Processes　40　(1)　204-213　2021/01/01

DOI： 10.1515/htmp-2021-0024 　

ISSN： 0334-6455

A Grain Size-Dependent Equation for Creep Rupture Life of Grade 91 Steel Verified Up To 233,000 Hours Peer-reviewed

K. Maruyama, N. Sekido, K. Yoshimi, Y. Yamamoto

Journal of Pressure Vessel Technology　142　(6)　2020/12/01

DOI： 10.1115/1.4047442 　

ISSN： 0094-9930

eISSN： 1528-8978

Significant improvement of the oxidation resistance of MoSiBTiC-based multiphase alloys by Ti enrichment Peer-reviewed

Tomotaka Hatakeyama, Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi

Corrosion Science　176　108937-108937　2020/11

DOI： 10.1016/j.corsci.2020.108937 　

ISSN： 0010-938X

Microstructures and mechanical properties of Mg/Zr nanostructured multilayers with coherent interface Peer-reviewed

Y. Lu, N. Sekido, K. Yoshimi, S. N. Yarmolenko, Q. Wei

Thin Solid Films　712　2020/10/31

DOI： 10.1016/j.tsf.2020.138314 　

ISSN： 0040-6090

High-temperature oxidation behavior of a Ti5Si3-incorporated MoSiBTiC alloy Peer-reviewed

Xi Nan, Mi Zhao, Yuanyuan Lu, Nobuaki Sekido, Kyosuke Yoshimi

Intermetallics　125　106895-106895　2020/10

DOI： 10.1016/j.intermet.2020.106895 　

ISSN： 0966-9795

Orientation relationship between bcc precipitates and Ti5Si3 matrix in Mo–Si–B–Ti–C quinary alloys Peer-reviewed

Tomotaka Hatakeyama, Nobuaki Sekido, Yuta Kimura, Kyosuke Yoshimi

Intermetallics　124　106863-106863　2020/09

DOI： 10.1016/j.intermet.2020.106863 　

ISSN： 0966-9795

Microstructure and Phase Stability of Ti and Al Co-Added MoSiBTiC Alloys Peer-reviewed

Motoyuki Tsukamura, Takateru Yamamuro, Nobuaki Sekido, Sadahiro Tsurekawa, Kyosuke Yoshimi

Journal of the Japan Institute of Metals and Materials　84　(7)　217-226　2020/07/01

DOI： 10.2320/jinstmet.j2019050 　

ISSN： 0021-4876

eISSN： 2433-7501

Solidification pathways and phase equilibria in the Mo–Ti–C ternary system Peer-reviewed

Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi

High Temperature Materials and Processes　39　(1)　164-170　2020/05/20

DOI： 10.1515/htmp-2020-0053 　

ISSN： 0334-6455

eISSN： 2191-0324

In situ neutron diffraction on ferrite and pearlite transformations for a 1.5Mn-1.5Si-0.2C steel Peer-reviewed

Yo Tomota, Yan Xu Wang, Takahito Ohmura, Nobuaki Sekido, Stefanus Harjo, Takuro Kawasaki, Wu Gong, Akira Taniyama

Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　106　(5)　262-271　2020/05/01

DOI： 10.2355/tetsutohagane.TETSU-2019-106 　

ISSN： 0021-1575

Effect of Cr addition on microstructure and oxidation resistance of a Ti5Si3-containing MoSiBTiC alloy Peer-reviewed

Tomotaka Hatakeyama, Nobuaki Sekido, Kyosuke Yoshimi

Corrosion Science　166　108418-108418　2020/04

DOI： 10.1016/j.corsci.2019.108418 　

ISSN： 0010-938X

Effect of Cr and Al on oxidation behavior of Ti5Si3-containing MoSiBTiC alloy Peer-reviewed

JSPS Report;of;Comittee on Heat;Resistant Materials;Alloys　61　(1)　109-116　2020/03

Grade91鋼の長時間域での旧γ粒径に依存するクリープ破断時間式の提案

丸山公一, 関戸信彰, 吉見享祐, 山本佑

日本学術振興会耐熱金属材料第123委員会研究報告　61　(1)　35-46　2020/03

Evaluation of Boron Solubility in Iron Solid Solution by Radio-frequency Glow-discharge Optical Emission Spectroscopy Peer-reviewed

Nobuaki Sekido, Yuta Kimura, Takumi Osanai, Toshimi Miyagi, Hiroshi Numakura, Kyosuke Yoshimi

Tetsu-to-Hagane　106　(6)　292-301　2020

DOI： 10.2355/tetsutohagane.tetsu-2019-114 　

ISSN： 0021-1575

eISSN： 1883-2954

Effect of Off-Stoichiometry on Elastic Modulus of TiC Phase in Mo-TiC Ternary System Peer-reviewed

Shuntaro Ida, Nobuaki Sekido, Kyosuke Yoshimi

Proceedings from EPRI’s 9th International Conference on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conference on High-Temperature Materials　830-835　2019/10

MICROSTRUCTURE EVOLUTION IN A HIGH-BORON FERRITIC STEEL DURING CREEP AT 650°C Peer-reviewed

Nobuaki Sekido, Tomoyuki Hatta, Kouichi Maruyama, Kyosuke Yoshimi, Mitsuharu Yonemura

Proceedings from EPRI’s 9th International Conference on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conference on High-Temperature Materials　156-161　2019/10

Effect of Solid Oxygen Source Species on the Al-Oxide Precipitation Behavior in Fe-Al Alloys by Powder Metallurgy Peer-reviewed

Katsuhiro SATO, Nobuaki SEKIDO, Kyosuke YOSHIMI

J. Jpn. Soc. Powder Powder Metallurgy　66　(10)　363-370　2019/10

Mo-Ti-C3元系における凝固過程およびMo/TiC/Mo2C3相間の相平衡

井田駿太郎, 関戸信彰, 吉見享祐

日本学術振興会耐熱金属材料第123委員会研究報告　60　(2)　272-281　2019/07

Recent Research Progress from Mo-Si-based Intermetallics to MoSiBTiC Alloy Peer-reviewed

Kyosuke Yoshimi, Nobuaki Sekido, Shuntaro Ida

Materia-Japan　58　(7)　363-370　2019/07

Fabrication of oxide dispersion strengthened alloys through solid-state reactions between Fe[sbnd]Al and Fe <inf>2</inf> O <inf>3</inf> powders Peer-reviewed

Katsuhiro Sato, Nobuaki Sekido, Kyosuke Yoshimi

Materials Science and Engineering A　754　68-74　2019/04

DOI： 10.1016/j.msea.2019.03.060 　

ISSN： 0921-5093

Gr. 91鋼の4つのクリープ領域でのMonkman-Grant則の違い

丸山公一, 関戸信彰, 吉見享祐

日本学術振興会耐熱金属材料第123委員会研究報告　60　(1)　19-31　2019/03

Changes in Monkman-Grant relation among four creep regions of modified 9Cr-1Mo steel Peer-reviewed

Kouichi Maruyama, Nobuaki Sekido, Kyosuke Yoshimi

Materials Science and Engineering A　749　223-234　2019/03

DOI： 10.1016/j.msea.2019.02.003 　

ISSN： 0921-5093

高温引張クリープ下における第1世代モシブチック合金中の変形ミクロ組織の発達 Invited

吉見享祐, 柳田隆太, Zhu Linye, 井田駿太郎, 関戸信彰, 連川貞弘, 上村宗二朗

耐熱金属材料第123委員会研究報告　60　(2)　282-289　2019/02

Special issue on recent advances in indentation technique preface Peer-reviewed

Takahito Ohmura, Nobuaki Sekido

Materials Transactions　60　1403　2019/01

DOI： 10.2320/matertrans.MPR2019905 　

ISSN： 1345-9678

Effect of Cr addition on the phase equilibria and oxidation behavior of NbSi2 Peer-reviewed

Nobuaki Sekido, Ryoma Aizawa, Shunkichi Ueno

Materials Transactions　60　666-673　2019/01

DOI： 10.2320/matertrans.MB201809 　

ISSN： 1345-9678

3D Observation on Precipitates of a Ferritic Heat Resistant Steel after Longterm Creep Peer-reviewed

Tomoyuki Hatta, Nobuaki Sekido, Mitsuharu Yonemura, Kouichi Maruyama, Kyosuke Yoshimi

Materia-Japan　57　(12)　619　2018/12

Ultrahigh-temperature tensile creep of TiC-reinforced Mo-Si-B-based alloy Peer-reviewed

Shiho Yamamoto Kamata, Daiki Kanekon, Yuanyuan Lu, Nobuaki Sekido, Kouichi Maruyama, Gunther Eggeler, Kyosuke Yoshimi

Scientific Reports　8　(1)　2018/12/01

DOI： 10.1038/s41598-018-28379-w 　

eISSN： 2045-2322

MoSiBTiC合金の室温破壊靭性に対する時効熱処理の効果

齋藤哲也, 関戸信彰, 束村基行, 上村宗二朗, 山室賢輝, 連川貞弘, 吉見享祐

耐熱金属材料第123委員会研究報告　59　(3)　505-513　2018/11

Effect of Ti5Si3 phase on Mechanical Properties and Oxidation Resistance of MoSiBTiC-based Alloys Peer-reviewed

HATAKEYAMA Tomotaka, SEKIDO Nobuaki, YOSHIMI Kyosuke

Journal of the Gas Turbine Society of Japan　46　(6)　486-494　2018/11

In situ neutron diffraction study on ferrite and pearlite transformations for a 1.5Mn-1.5Si-0.2C steel Peer-reviewed

Yo Tomota, Yan Xu Wang, Takahito Ohmura, Nobuaki Sekido, Stefanus Harjo, Takuro Kawasaki, Wu Gong, Akira Taniyama

ISIJ International　58　(11)　2125-2132　2018/11

DOI： 10.2355/isijinternational.ISIJINT-2018-336 　

ISSN： 0915-1559

eISSN： 1347-5460

Gr.91鋼の長時間クリープ破断強度評価の検証

丸山公一, 関戸信彰, 吉見享祐

日本学術振興会耐熱金属材料第123委員会研究報告　59　(1)　75-86　2018/03

A proposal for post-assessment test of long-term creep rupture strength of grade 91 steel Peer-reviewed

Kouichi Maruyama, Nobuaki Sekido, Kyosuke Yoshimi

ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil　2018

DOI： 10.1115/ETAM2018-6706 　

Deformation microstructure developed by nanoindentation of a MAX Phase Ti2AlC Peer-reviewed

Yusuke Wada, Nobuaki Sekido, Takahito Ohmura, Kyosuke Yoshimi

Materials Transactions　59　(5)　771-778　2018

DOI： 10.2320/matertrans.MBW201703 　

ISSN： 1345-9678

Effect of indentation orientation on the onset of plastic deformation for a MAX phase Ti2AlC Peer-reviewed

Yusuke Wada, Nobuaki Sekido, Takahito Ohmura, Kyosuke Yoshimi

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　82　(5)　162-168　2018

DOI： 10.2320/jinstmet.J2017042 　

ISSN： 0021-4876

Effect of microstructural continuity on room-temperature fracture toughness of ZrC-added MoSiB alloys Peer-reviewed

Shunichi Nakayama, Nobuaki Sekido, Sojiro Uemura, Sadahiro Tsurekawa, Kyosuke Yoshimi

Materials Transactions　59　(4)　518-527　2018

DOI： 10.2320/matertrans.MJ201613 　

ISSN： 1345-9678

On the physical basis of a Larson-Miller constant of 20 Peer-reviewed

K. Maruyama, F. Abe, H. Sato, J. Shimojo, N. Sekido, K. Yoshimi

International Journal of Pressure Vessels and Piping　159　93-100　2018/01/01

DOI： 10.1016/j.ijpvp.2017.11.013 　

ISSN： 0308-0161

Analysis of Microstructural Morphology and Ductile Phase Continuity of ZrC-Added Mo-Si-B Alloys

S. Nakayama, K. Yoshimi, N. Sekido, S. Uemura, S. Tsurekawa

JSPS Report of the 123rd Comittee on Heat Resistant Materials and Alloys　58　(3)　427-428　2017/11

A Postassessment Test of 100,000 h Creep Rupture Strength of Grade 91 Steel at 600 degrees C Peer-reviewed

K. Maruyama, N. Sekido, K. Yoshimi

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME　139　(5)　2017/10

DOI： 10.1115/1.4037446 　

ISSN： 0094-9930

eISSN： 1528-8978

Mechanical properties and dislocation character of YB4 and YB6 Peer-reviewed

Nobuaki Sekido, Takahito Ohmura, John H. Perepezko

INTERMETALLICS　89　86-91　2017/10

DOI： 10.1016/j.intermet.2017.05.024 　

ISSN： 0966-9795

eISSN： 1879-0216

IN738LC"における粒界近傍組織の3次元観察

関戸信彰, 吉見享祐, 齊藤大蔵, 吉岡洋明

日本学術振興会耐熱金属材料第123委員会研究報告　58　(2)　161-165　2017/07

Causes of heat-to-heat variation of creep strength in grade 91 steel Peer-reviewed

K. Maruyama, J. Nakamura, N. Sekido, K. Yoshimi

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　696　104-112　2017/06

DOI： 10.1016/j.msea.2017.04.050 　

ISSN： 0921-5093

eISSN： 1873-4936

電磁超音波共鳴法を用いたMo-Si-B合金の弾性率測定

中村純也, 関戸信彰, 吉見享祐

日本学術振興会耐熱金属材料第123委員会研究報告　58　(1)　95-104　2017/03

Gr.91鋼におけるヒート間のクリープ強度差の原因

丸山公一, 中村純也, 関戸信彰, 吉見享祐

日本学術振興会耐熱金属材料第123委員会研究報告　58　(1)　9-22　2017/03

Application of Radio Frequency Glow Discharge Sputtering for Nanoindentation Sample Preparation Peer-reviewed

N. Sekido, T. Ohmura, K. Tsuzaki

Journal of Materials Engineering and Performance　26　(3)　1245-1250　2017/03

DOI： 10.1007/s11665-017-2521-1 　

ISSN： 1059-9495

eISSN： 1544-1024

Comparison of the Measurements of Austenite Volume Fraction by Various Methods for Mn-Si-C Steel Peer-reviewed

Yo Tomota, Nobuaki Sekido, Pingguang Xu, Takuro Kawasaki, Stefanus Harjo, Masahiko Tanaka, Takehisa Shinohara, Yuhua Su, Akira Taniyama

Tetsu-to-Hagane　103　(10)　570-578　2017

DOI： 10.2355/tetsutohagane.tetsu-2017-045 　

ISSN： 0021-1575

eISSN： 1883-2954

Comparison of the Measurements of Austenite Volume Fraction by Various Methods for Mn-Si-C Steel Peer-reviewed

Yo Tomota, Nobuaki Sekido, Pingguang Xu, Takuro Kawasaki, Stefanus Harjo, Masahiko Tanaka, Takehisa Shinohara, Yuhua Su, Akira Taniyama

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　103　(10)　16-24　2017

DOI： 10.2355/tetsutohagane.TETSU-2017-045 　

ISSN： 0021-1575

eISSN： 1883-2954

The evaluation of the composition dependence of fracture toughness of Al3Nb alloys by using micro-size fracture testing Peer-reviewed

Nobuhiro Matsuzaki, Ken-Ichi Ikeda, Seiji Miura, Nobuaki Sekido, Takahito Ohmura

MRS Advances　2　(26)　1405-1410　2017

DOI： 10.1557/adv.2017.167 　

ISSN： 2059-8521

In situ Observations of Transformation Behavior upon Heating for a 1.5Mn-1.5Si-0.2C Steel -Comparison between Neutron Diffraction, XRD, EBSD and Dilatometry- Peer-reviewed

Yo Tomota, Nobuaki Sekido, Stefanus Harjo, Takuro Kawasaki, Wu Gong, Akira Taniyama

ISIJ INTERNATIONAL　57　(12)　2237-2244　2017

DOI： 10.2355/isijinternational.ISIJINT-2017-272 　

ISSN： 0915-1559

eISSN： 1347-5460

Solidification of Bcc/T-1/T-2 three-phase microstructure in Mo-Nb-Si-B alloys Peer-reviewed

N. Takata, N. Sekido, M. Takeyama, J. H. Perepezko, M. Follett-Figueroa, C. Zhang

INTERMETALLICS　72　1-8　2016/05

DOI： 10.1016/j.intermet.2016.01.001 　

ISSN： 0966-9795

eISSN： 1879-0216

3D Observation on Nano-sized VC Precipitates Formed in a Low Carbon Steel through Interphase Precipitation Peer-reviewed

Sekido Nobuaki, Kamikawa Naoya, Tsuzaki Kaneaki, Ohmura Takahito, Hara Toru, Miyamoto Goro, Furuhara Tadashi

Materia Japan　55　(12)　593-593　2016

DOI： 10.2320/materia.55.593 　

ISSN： 1340-2625

Correlation between the surface electronic structure and CO-oxidation activity of Pt alloys Peer-reviewed

Hideki Abe, Hideki Yoshikawa, Naoto Umezawa, Ya Xu, Govindachetty Saravanan, Gubbala V. Ramesh, Toyokazu Tanabe, Rajesh Kodiyath, Shigenori Ueda, Nobuaki Sekido, Yoko Yamabe-Mitarai, Masahiko Shimoda, Takahisa Ohno, Futoshi Matsumoto, Takayuki Komatsu

PHYSICAL CHEMISTRY CHEMICAL PHYSICS　17　(7)　4879-4887　2015

DOI： 10.1039/c4cp03406f 　

ISSN： 1463-9076

eISSN： 1463-9084

Crystallography of Bcc/T&lt;inf&gt;1&lt;/inf&gt;/T&lt;inf&gt;2&lt;/inf&gt; three-phase microstructure in the directionally solidified Mo-Nb-Si-B alloy Peer-reviewed

Naoki Takata, Nobuaki Sekido, Masao Takeyama, John H. Perepezko

Materials Research Society Symposium Proceedings　1760　133-138　2015

DOI： 10.1557/opl.2015.53 　

ISSN： 0272-9172

Evaluation of fracture toughness of alpha-Nb&lt;inf&gt;5&lt;/inf&gt;Si&lt;inf&gt;3&lt;/inf&gt; by micro-sized cantilever beam testing Peer-reviewed

Shiori Suzuki, Nobuaki Sekido, Takahito Ohmura, Seiji Miura

Materials Research Society Symposium Proceedings　1760　187-192　2015

DOI： 10.1557/opl.2015.147 　

ISSN： 0272-9172

Enhanced Activity for Oxygen Reduction Reactions by Carbon-supported High-index-facet Pt-Ti Nanoparticles Peer-reviewed

Takao Gunji, Toyokazu Tanabe, Govindachetty Saravanan, Shingo Kaneko, Hideki Yoshikawa, Yoshitaka Matsushita, Nobuaki Sekido, Ya Xu, Shigenori Ueda, Hideki Abe, Futoshi Matsumoto

ELECTROCHEMISTRY　83　(1)　7-11　2015/01

DOI： 10.5796/electrochemistry.83.7 　

ISSN： 1344-3542

Evaluation of fracture toughness of alpha-Nb&lt;inf&gt;5&lt;/inf&gt;Si&lt;inf&gt;3&lt;/inf&gt; by micro-sized cantilever beam testing

Shiori Suzuki, Nobuaki Sekido, Takahito Ohmura, Seiji Miura

Materials Research Society Symposium Proceedings　1760　187-192　2015

DOI： 10.1557/opl.2015.147 　

ISSN： 0272-9172

Crystallography of Bcc/T&lt;inf&gt;1&lt;/inf&gt;/T&lt;inf&gt;2&lt;/inf&gt; three-phase microstructure in the directionally solidified Mo-Nb-Si-B alloy

Naoki Takata, Nobuaki Sekido, Masao Takeyama, John H. Perepezko

Materials Research Society Symposium Proceedings　1760　133-138　2015

DOI： 10.1557/opl.2015.53 　

ISSN： 0272-9172

Phase equilibria and oxidation behavior of C40 disilicides in the Nb-Cr-Si system

Nobuaki Sekido, Ryoma Aizawa, Shunkichi Ueno

Materials Research Society Symposium Proceedings　1760　108-113　2015

DOI： 10.1557/opl.2015.29 　

ISSN： 0272-9172

Stress strain behavior of ferrite and bainite with nano-precipitation in low carbon steels

Naoya Kamikawa, Kensuke Sato, Goro Miyamoto, Mitsuhiro Murayama, Nobuaki Sekido, Kaneaki Tsuzaki, Tadashi Furuhara

ACTA MATERIALIA　83　383-396　2015/01

DOI： 10.1016/j.actamat.2014.10.010 　

ISSN： 1359-6454

eISSN： 1873-2453

Real time correlation between flow stress and dislocation density in steel during deformation Peer-reviewed

Ling Zhang, Nobuaki Sekido, Takahito Ohmura

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　611　188-193　2014/08

DOI： 10.1016/j.msea.2014.05.073 　

ISSN： 0921-5093

eISSN： 1873-4936

Stability of the Nb5Si3 phase in the Nb-Mo-Si system

N. Sekido, K. Hildal, R. Sakidja, J. H. Perepezko

Intermetallics　41　104-112　2013

DOI： 10.1016/j.intermet.2013.04.023 　

ISSN： 0966-9795

Steady state creep behavior of zirconia dispersion strengthened platinum alloys in medium stress regime

Nobuaki Sekido, Akinori Hoshino, Masahiro Fukuzaki, Yoko Yamabe-Mitarai, Tomohiro Maruko

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　528　(29-30)　8451-8459　2011/11

DOI： 10.1016/j.msea.2011.08.011 　

ISSN： 0921-5093

eISSN： 1873-4936

Interdiffusion in the Ir-Rich Solid Solutions of Ir-Pt, Ir-Rh, and Ir-Re Binary Alloys

Nobuaki Sekido, Akinori Hoshino, Masahiro Fukuzaki, Tomohiro Maruko, Yoko Yamabe-Mitarai

JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION　32　(3)　219-225　2011/06

DOI： 10.1007/s11669-011-9873-2 　

ISSN： 1547-7037

eISSN： 1863-7345

Pt3Ti Nanoparticles: Fine Dispersion on SiO2 Supports, Enhanced Catalytic CO Oxidation, and Chemical Stability at Elevated Temperatures

Govindachetty Saravanan, Hideki Abe, Ya Xu, Nobuaki Sekido, Hirohito Hirata, Shin-ichi Matsumoto, Hideki Yoshikawa, Yoko Yamabe-Mitarai

LANGMUIR　26　(13)　11446-11451　2010/07

DOI： 10.1021/la100942h 　

ISSN： 0743-7463

Dislocation character and operative slip systems in alpha-Nb5Si3 tested at 1673 K

N. Sekido, S. Miura, Y. Yamabe-Mitarai, Y. Kimura, Y. Mishima

INTERMETALLICS　18　(5)　841-845　2010/05

DOI： 10.1016/j.intermet.2009.12.010 　

ISSN： 0966-9795

Effects of Fe addition on tensile deformation mode and crevice corrosion resistance in Ti-15Mo alloy

X. H. Min, S. Emura, N. Sekido, T. Nishimura, K. Tsuchiya, K. Tsuzaki

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　527　(10-11)　2693-2701　2010/04

DOI： 10.1016/j.msea.2009.12.050 　

ISSN： 0921-5093

Growth Behavior and Interfacial Character of Ir3Y Precipitates in the Ir2Y Lave Phase Matrix

N. Sekido, Y. Yamabe-Mitarai

MATERIALS TRANSACTIONS　51　(3)　447-454　2010/03

DOI： 10.2320/matertrans.MBW200901 　

ISSN： 1345-9678

eISSN： 1347-5320

Synthesis and Catalytic Performance of Intermetallic Nanoparicles Peer-reviewed

Abe Hideki, Govindachetty Saravanan, Xu Ya, Sekido Nobuaki, Yamabe-Mitarai Yoko, Shimoda Masahiko

Materia Japan　49　(7)　314-316　2010

DOI： 10.2320/materia.49.314 　

ISSN： 1340-2625

Second Phase Precipitation within a Laves Phase in the Ir-Y Binary System

N. Sekido, Y. Yamabe-Mitarai

THERMEC 2009, PTS 1-4　638-642　1400-1405　2010

DOI： 10.4028/www.scientific.net/MSF.638-642.1400 　

ISSN： 0255-5476

High Temperature Strength of Ir/Ir2Y Two Phase Alloys in the Ir-Pt-Y System

Nobuaki Sekido, Yoko Yamabe-Mitarai

PRICM 7, PTS 1-3　654-656　424-427　2010

DOI： 10.4028/www.scientific.net/MSF.654-656.424 　

ISSN： 0255-5476

高融点Ir-Y 系Laves 相の構造とその組織制御の可能性

関戸信彰, 御手洗容子

日本学術振興会耐熱金属材料第123 委員会研究報告書　50　(3)　361-367　2009/11

Evaluation of matrix strength in ultra-fine grained pure Al by nanoindentation

Ling Zhang, Takahito Ohmura, Satoshi Emura, Nobuaki Sekido, Fuxing Yin, Xiaohua Min, Kaneaki Tsuzaki

JOURNAL OF MATERIALS RESEARCH　24　(9)　2917-2923　2009/09

DOI： 10.1557/JMR.2009.0342 　

ISSN： 0884-2914

Development of porous ceramic layers through sublimation of metal phases in multiphase alloys

Nobuaki Sekido, Yoko Yamabe-Mitarai

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS　27　(5)　907-911　2009/09

DOI： 10.1016/j.ijrmhm.2009.05.005 　

ISSN： 0263-4368

Phase equilibria and oxidation behavior of Ir-rich Ir-Y binary alloys

Nobuaki Sekido, Hideyuki Murakami, Yoko Yamabe-Mitarai

JOURNAL OF ALLOYS AND COMPOUNDS　476　(1-2)　107-112　2009/05

DOI： 10.1016/j.jallcom.2008.08.058 　

ISSN： 0925-8388

D8l型シリサイドを基盤とする次世代耐熱材料の設計 Peer-reviewed

SEKIDO Nobuaki

まてりあ　48　(2)　71-75　2009/02

DOI： 10.2320/materia.48.71 　

ISSN： 1340-2625

Deformation Behavior of Niobium Silicides During High Temperature Compression

N. Sekido, S. Miura, Y. Yamabe-Mitarai, Y. Kimura, Y. Mishima

ADVANCED INTERMETALLIC-BASED ALLOYS FOR EXTREME ENVIRONMENT AND ENERGY APPLICATIONS　1128　413-+　2009

ISSN： 0272-9172

Phase stability and structural defects in high-temperature Mo-Si-B alloys

R. Sakidja, J. H. Perepezko, S. Kim, N. Sekido

ACTA MATERIALIA　56　(18)　5223-5244　2008/10

DOI： 10.1016/j.actamat.2008.07.015 　

ISSN： 1359-6454

Annealing response of point defects in off-stoichiometric Mo5SiB2 phase

N. Sekido, R. Sakidja, J. H. Perepezko

INTERMETALLICS　15　(9)　1268-1276　2007/09

DOI： 10.1016/j.intermet.2007.03.009 　

ISSN： 0966-9795

Microstructure development of unidirectionally solidified (Nb)/Nb3Si eutectic alloys

Nobuaki Sekido, Yoshisato Kimura, Seiji Miura, Yoshinao Mishima

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　444　(1-2)　51-57　2007/01

DOI： 10.1016/j.msea.2006.06.140 　

ISSN： 0921-5093

eISSN： 1873-4936

Microstructure control of Nb-Si alloy doped with Zr and Mg through eutectic and eutectoid reactions and its deformation behavior

Seiji Miura, Yuki Murasato, Kenji Ohkubo, Yoshisato Kimura, Nobuaki Sekido, Yoshinao Mishima, Tetsuo Mohri

MRS Symposium Proceedings　980　327　2007

ISSN： 0272-9172

Aluminum pack cementation on Mo-Si-B alloys - Kinetics and lifetime prediction

F. Rioult, N. Sekido, R. Sakidja, J. H. Perepezko

JOURNAL OF THE ELECTROCHEMICAL SOCIETY　154　(11)　C692-C701　2007

DOI： 10.1149/1.2775164 　

ISSN： 0013-4651

Microstructural control of Nb-Si alloy with invariant reactions

S. Miura, J. H. Kim, K. Ohkubo, Y. Kimura, N. Sekido, Y. Mishima, T. Mohri

THERMEC 2006, PTS 1-5　539-543　1507-+　2007

ISSN： 0255-5476

Fracture toughness and high temperature strength of unidirectionally solidified Nb-Si binary and Nb-Ti-Si ternary alloys

Nobuaki Sekido, Yoshisato Kimura, Seiji Miura, Fu-Gao Wei, Yoshinao Mishima

JOURNAL OF ALLOYS AND COMPOUNDS　425　(1-2)　223-229　2006/11

DOI： 10.1016/j.jallcom.2006.01.071 　

ISSN： 0925-8388

eISSN： 1873-4669

Critical cooling rate for Fe48Cr15Mo14Y2C15B6 bulk metallic glass formation

K Hildal, N Sekido, JH Perepezko

INTERMETALLICS　14　(8-9)　898-902　2006/08

DOI： 10.1016/j.intermet.2006.01.036 　

ISSN： 0966-9795

構造空孔を含むボロシリサイドを扱って Peer-reviewed

SEKIDO Nobuaki

Materia Japan　45　(4)　304-304　2006/04

Orientation relationship between Nb and Nb5Si3 (D8(1)) phases in the eutectoid lamellar microstructure

N Sekido, FG Wei, Y Kimura, S Miura, Y Mishima

PHILOSOPHICAL MAGAZINE LETTERS　86　(2)　89-98　2006/02

DOI： 10.1080/09500830600567701 　

ISSN： 0950-0839

eISSN： 1362-3036

Processing, microstructure, and mechanical properties of (Nb)/Nb5Si3 two-phase Alloys

Yoshisato Kimura, Hiroaki Yamaoka, Nobuaki Sekido, Yoshinao Mishima

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science　36　(3)　483-488　2005

DOI： 10.1007/s11661-005-0161-9 　

ISSN： 1073-5623

Nucleation of (Mo) precipitates on dislocations during annealing of a Mo-rich Mo5SiB2 phase

N Sekido, R Sakidja, JH Perepezko

Integrative and Interdisciplinary Aspects of Intermetallics　842　321-326　2005

ISSN： 0272-9172

Precipitation behavior of (Mo) phase on dislocations in Mo5SiB2 phase

Nobuaki Sekido, Ridwan Sakidja, John H. Perepezko

Solid-Solid Phase Transformations in Inorganic Materials 2005, Vol 1　1　357-362　2005

Solidification process and mechanical behavior of the Nb/Nb5Si3 two phase alloys in the Nb-Ti-Si system

N Sekido, Y Kimura, S Miura, Y Mishima

MATERIALS TRANSACTIONS　45　(12)　3264-3271　2004/12

DOI： 10.2320/matertrans.45.3264 　

ISSN： 1345-9678

eISSN： 1347-5320

Synthesis of dual phase bronze alloys from elemental nanoparticle constituents

NA Smith, N Sekido, JH Perepezko, AB Ellis, WC Crone

SCRIPTA MATERIALIA　51　(5)　423-426　2004/09

DOI： 10.1016/j.scriptamat.2004.05.004 　

ISSN： 1359-6462

Effect of growth rate on microstructure and mechanical properties of the directionally solidified Nb-Si eutectic alloy

N Sekido, Y Kimura, Y Mishima

DEFECT PROPERTIES AND RELATED PHENOMENA IN INTERMETALLIC ALLOYS　753　327-332　2003

ISSN： 0272-9172

Control of Microstructure by Heat Treatment to Overcome the Trade-off Balancing in the Niobium Silicide Based MMC as Ultra-High Temperature Smart Materials Peer-reviewed

N. Sekido, Y. Kimura, S. Miura, Y. Mishima

Transaction of the MRS-J　26　(1)　145-148　2001/01

Alloy design of Nb5Si3 composite with a fine lamellar structure for ultra-high temperature application

N Sekido, FG Wei, Y Kimura, S Miura, Y Mishima

STRUCTURAL INTERMETALLICS 2001　795-800　2001

Effect of lamellar spacing on the mechanical properties of (Nb)/(Nb, Ti)5Si3 two-phase alloys

Nobuaki Sekido, Yoshisato Kimura, Fu-Gao Wei, Seiji Miura, Yoshinao Mishima

Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　64　(11)　1056-1061　2000

DOI： 10.2320/jinstmet1952.64.11_1056 　

ISSN： 0021-4876

Microstructure and Ductility of Multi-phase Intermetallic Alloys in the Nb-Si-Ti System Peer-reviewed

N. Sekido, S. Miura, Y. Mishima

Proceedings of the Third Pacific Rim International Conference on Advanced Materials and Processing　2393-2398　1998/06