Phase constituent and reverse martensitic transformation temperature of PtTi-CoTi diffusion couple heat-treated at 1373K

Hideki Hosoda, Satoshi Tsutsumi, Masaki Tahara, Tomonari Inamura, Kenji Goto, Hiroyasu Kanetaka, Yoko Yamabe-Mitarai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The reverse martensitic (austenite) transformation temperatures (As) were investigated using a diffusion couple of PtTi and CoTi with a continuous compositional gradient. It was found that PtTi and CoTi form a complete solid solution of (Pt, Co)Ti at 1373K. Surface relief was formed by heating due to the austenite transformation. Judging from the formation of the surface patterns and the corresponding chemical compositions, As monotonously decreases with increasing Co content at a rate of -70K/at%Co, and As is estimated to be close to room temperature (RT) when the Co concentration is 15at%Co. Besides, micro Vickers hardness values measured at RT are minimized around 15at%Co.

Original languageEnglish
Title of host publicationAdvanced Structural and Functional Intermetallic-Based Alloys
EditorsM. Heilmaier, I. Baker, K. Kishida, M. Mills, S. Miura
PublisherMaterials Research Society
Pages163-168
Number of pages6
ISBN (Electronic)9781510806344
DOIs
Publication statusPublished - 2015 Jan 1
Event2014 MRS Fall Meeting - Boston, United States
Duration: 2014 Nov 302014 Dec 5

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1760
ISSN (Print)0272-9172

Other

Other2014 MRS Fall Meeting
CountryUnited States
CityBoston
Period14/11/3014/12/5

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Hosoda, H., Tsutsumi, S., Tahara, M., Inamura, T., Goto, K., Kanetaka, H., & Yamabe-Mitarai, Y. (2015). Phase constituent and reverse martensitic transformation temperature of PtTi-CoTi diffusion couple heat-treated at 1373K. In M. Heilmaier, I. Baker, K. Kishida, M. Mills, & S. Miura (Eds.), Advanced Structural and Functional Intermetallic-Based Alloys (pp. 163-168). (Materials Research Society Symposium Proceedings; Vol. 1760). Materials Research Society. https://doi.org/10.1557/opl.2015.59