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High Temperature Materials Design Group

Novel high-temperature materials, which can be used in the temperature range between 400 and 800 ºC, are necessary in order to improve energy efficiency of combustion system and to reduce carbon-dioxide emission. Those materials need to keep high strength at high temperature, high creep resistance, and excellent oxidation resistance. Our current group is developing novel iron-based and Titanium-based alloys that can be used in the above temperature range. We are also attempting understanding of new strengthening mechanism, improvement of oxidation and corrosion resistances, grid development of suitable coating materials.

Specialized Research Field

1. Ferritic heat resistant alloys

"Figure: Temperature dependence of creep rupture strength for 10^5 hours of conventional heat resistant steel and NIMS precipitation strengthened 15Cr heat resistant steel " Image

Figure: Temperature dependence of creep rupture strength for 10^5 hours of conventional heat resistant steel and NIMS precipitation strengthened 15Cr heat resistant steel


 We developed “NIMS precipitation hardened 15Cr heat resistant steel” whose ferrite matrix was precipitation hardened by  Laves phase as new heat resistant steel which will be replaced from conventional  annealed martensitic stainless steel. We achieved excellently higher creep strength than those of conventional heat resistant steel and succeeded improvement of temperature capability of ferritic heat resistant steel by heat treatment and alloy composition optimization. This new heat resistant steel has excellent oxidation resistance and thermal properties and low processing cost. We also succeeded production of seamless tube using existing facility.
The new steel is expected to use as boiler tube and main steam tube in power plant and high temperature  component in chemical plant, supercritical water geothermal power generation, nuclear fusion reactor, and fuel cell.


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 NIMS succeeded development of new ferritic steel with double strength, 100 time longer life and 6 time higher oxidation resistance.
Using new alloy design  philosophy. However, this development was performed by inefficient experimental method for long time using plenty of samples. Now we are attempting construction of model to develop high performance heat resistant materials by prediction of microstructure and property. These models is constructing by  organizing experimentally obtained data of heat resistant materials based on material science. We are attempting simulation tools not only for heat resistant steel but also Ni-base superalloys and high temperature Ti alloys that can calculate optimize alloy composition and processing condition by inputting necessary materials performance.


2. Development of High temperature Ti alloys

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We design alloys with excellent oxidation resistance and clarify deformation mechanism of each microstructure by microstructure controlling.

Based on deformation mechanism, we design alloys with excellent creep properties.



3.High temperature shape memory alloys

"Austenite starting temperature ." Image

Austenite starting temperature .


 Base on TiPd, we design and develop new high temperature alloys which can work above 300 ˚C.We already found some alloys which can recovery perfectly above 300 ˚C.


News・Activity

2019.Mar Haruki Masuyama is awarded a prize of “Excellent poster award”from Japan Institute of Metals. 
2019.Mar Sato san’s figure in his paper is used in the cover of Material Transaction in 2019. 
2019.Mar Kei Shimagami is awarded a prize of “Arimoto award”from Shibaura Institute of Technology. 
2019.Mar Hirotaka Sato is awarded a prize of “Wakatake award”from Shibaura Institute of Technology.
2018.Mar Kei Shimagami is awarded a prize of “The Japan Institute of Metals and Materials The Best Paper Award (Young Best Paper)” from JIM. 
Solid solution hardening and precipitation hardening of a2-Ti3Al in Ti-Al-Nb alloys 
Mater. Trans. 58, 10 (2017) 1404-1410. 
2018.Mar Hirotaka Sato is awarded a prize of “The Japan Institute of Metals and Materials The Best Paper Award (Young Best Paper)” from JIM. 
Training effect on microstructure and shape recovery in Ti-Pd-Zr alloys 
Mater. Trans. 58, 10 (2017) 1479-1486. 
2016.Nov. Hirotaka Sato is awarded a prize of “Excellent poster award”at Shape memory alloys symposium from Association of Shape memory alloys. 


Recent Publications

 1.K. Shimagami, T. Ito, Y. Toda, A. Yumoto, Y. Yamabe-Mitarai, Effect of Zr and Si addition on high-temperature mechanical properties and microstructure in Ti-10Al-2Nb-based alloys, Mater. Sci, Eng. A, 756 (2019) 46-53.
2.Y. Yamabe-Mitarai, S. Kuroda, N. Motohashi, H. Matsumoto, G. Miyamoto, E. Chandiran, Y. Yoshida, Y. Itsumi, Effect of forging temperature on microstructure evolution and tensile properties of Ti-17 alloys, Mater. Trans. In press. (2019).
3.M. Niinomi, T. Akahori, M. Nakai, Y. Koizumi, A. Chiba, T. Nakano, T. Kakeshita, Y. Yamabe-Mitarai, S. Kuroda, N. Motohashi, Y. Itsumi, and T. Choda, Quantitative and qualitative relationship between microstructural factors and fatigue lives under load- and strain-controlled conditions of Ti-5Al-2Sn-2Zr-4Cr-4Mo (Ti-17) fabricated using a 1500-ton forging simulator, Mater. Trans. In press (2019).
4.伊藤勉、福井貴大、御手洗容子、放電プラズマ焼結によるTi3Al金属間化合物の焼結特性、チタン誌, 66, 3 (2018) 186-192.
5.S. Hisada, M. Matsuda, K. Takashima, Y. Yamabe-Mitarai, Structural analysis and martensitic transformation in equiatomic HfPd alloy, J. of solid state chemistry, 258, Feb (2018) 712-717.
6.Y. Yamabe-Mitarai, W. Takebe, M. Shimojo, Phase transformation and shape memory effect of Ti-Pd-Pt-Zr High-temperature shape memory alloys, Shape memory and superelasticity, 3, 4 (2017) 381-391.
7.H. Matsumoto, D. Naito, K. Miyoshi, K. Yamanaka, A. Chiba, Y. Yamabe-Mitarai, Forging property, processing map, and mesoscale microstructural evolution modeling of a Ti-17 alloy with a lamellar (a and b) starting microstructure, STAM, 18, 1 (2017) 893-904.
8.H. Sato,  H. Young Kim, M. Shimojo, Y. Yamabe-Mitarai, Training effect on microstructure and shape recovery in Ti-Pd-Zr alloys, Mater. Trans. 58, 10 (2017) 1479-1486.若手講演論文賞
9.K. Shimagami, A. Yumoto, T. Ito, Y. Yamabe-Mitarai, Solid solution hardening and precipitation hardening of a2-Ti3Al in Ti-Al-Nb alloys, Mater. Trans. 58, 10 (2017) 1404-1410.若手講演論文賞
10.A. Biesiekierski, D. Ping,  Y. Li, J. Lin, D. K. S. Munir, Y. Yamabe-Mitarai, C. Wen, Extraordinary high strength Ti-Zr-Ta alloys through nanoscaled, dual-cubic spinodal reinforcement, Acta B11. A. Biesiekierski, J. Lin, Y. Li, D. Ping,  Y. Yamabe-Mitarai, C. Wen, Impact of ruthenium on mechanical properties, biological response and thermal processing of b-type Ti-Nb-Ru alloys,  Acta Biomaterialia, 48, 15 Jan (2017) 461-467.
12. S. Matsunaga, A. Serizawa, Y. Yamabe-Mitarai, Effect of Zr on microstructure and oxidation behavior of a and a +a2 Ti-Al-Nb alloys, Mater. Trans, 57, 11 (2016)1902-1907.
13. A. Biesiekierski, J. Lin, Y. Li, D. Ping, Y. Yamabe-Mitarai, C. Wen, Investigations into Ti-(Nb, Ta)-Fe for biomedical applications, Acta Biomaterialia, 32, 1 March (2016) 336-347.
14. H. Abe, H. Yoshikawa, N. Umezawa, Y. Xu, G. Saravanan, V. Gubbala, T. Tanabe, R. Kodiyath, S. Ueda, N. Sekido, Y. Yamabe-Mitarai, M. shimoda, T. Ohno, F. Matsumoto, T.Komatsu,  Correlation between the surface electronic structure and Co oxidation activity       of Pt alloys, Phys. Chem. Chem. Phys. 17 (2015) 4879-4887.
15. J. Murugesan, D. Ping, Y. Yamabe-Mitarai, Enhanced yielding strength of near alpha Ti-Al-Zr-Sn high temperature alloys, Mater. Scei. Eng. A, 625( 2015) 131-139.
16. P. Zywicki, D. H. Ping, T. Abe, H. Garvacz, Y. Yamabe-Mitarai, K. J. Kurzydlowski,Effect of Pd addition on the microstructure of Ti-30Nb alloys, Met. Mater. Int. 21 [4](2015) 617-622.
17. A. Wadood, Y. Yamabe-Mitarai, Silver and Zirconium ? ternary and quaternary TiAu based high temperature shape memory alloys, J. Alloy and Comp., 646 (2015) 1172-1177.
18. H. Shim, M. Tahara, T, Inamura, K. Goto, Y. Yamabe-Mitarai, H. Hosoda, Effect of Nbaddition on Martensitic transformation behavior of AuTi-15Co based biomedical shapememory alloys, Mater. Trans. JIM, 56 3: (2015) 429-434.
19.M. Jayaprakash, D. H. Ping, Y. Yamabe-Mitarai, Effect of Zr and Si addition on high temperature mechanical properties of near-α Ti?Al?Zr?Sn based alloys, Mat. Sci. Eng. A, 612 (2014), 456-461.iomaterialia, 53, 15 April (2017) 549-558.
20. A. Biesiekierski, D.H. Ping, Y. Yamabe-Mitarai, Cuie Wen. Impact of ruthenium on microstructure and corrosion behavior of b-type Ti?Nb?Ru alloys for biomedical applications, Materials and design, 59 (2014) 303-309.
21Y. Yamabe-Mitarai, H. Murakami, Mechanical properties at 2223 K and oxidation behavior of Ir alloys, Intermetallics, 48, (2014) 85-92.
22A. Wadood, H. Hosoda, Y. Yamabe-Mitarai, Phase transformation, oxidation and shape memory properties of Ti-50Au-10Zr alloy for high temperature application, J. Alloy and Comp., 595 (2014) 200-205.
23.S. Q. Wu, D. H. Ping, Y. Yamabe-Mitarai, W. L. Xiao, Y. Yang, Q. M. Hu, G. P. Li, R. Yang, {112}<111> Twinning during Omega to bcc transition, Acta Materialia, 62 (2014) 122-128.
24. A. Wadood, Y. Yamabe-MItarai, Recent research developments related to near-equiatomic TiPt alloys for high-temperature (above 800 ?C) applications, Platinum Metals Review,58, 2, (2014) 61-67.
25.  A. Wadood, Y. Yamabe-Mitarai, TiPt-Co and TiPt-Ru high temperature shape memory alloys, Mater. Sci. Eng. A, 610 (2014) 106-110.
26. J. Bart, J. Melek, P. Ko, H. Segawa, Y. Yamabe-Mitarai, Crystallization behavior in Se90Te and Se80Te20  thin films, J. Appl. Phys. 115 [12] (2014) 123506-1.
27. B. Zebin, H. Murakami, Y. Yamabe-Mitarai, Microstructure and oxidation behavior of Ir-rich Ir-Al binary alloys, Corrosion Sci. 87 (2014) 306-311.
28. A. R. Biesiekierski, D. H. Ping, Y. Yamabe-Mitarai, C. Wen, Impact of ruthenium on microstructure and corrosion behavior of b-type Ti-Nb-Ru alloys for biomedical applications, Mater. Des, 59 (2014) 303-309.


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High Temperature Materials Design Group
1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047 JAPAN
E-Mail: MITARAI.Yoko=nims.go.jp(Please change "=" to "@")