中国物理B ›› 2021, Vol. 30 ›› Issue (1): 18101-.doi: 10.1088/1674-1056/abc54a

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  • 收稿日期:2020-09-08 修回日期:2020-10-10 接受日期:2020-10-28 出版日期:2020-12-17 发布日期:2020-12-23

High temperature strain glass in Ti-Au and Ti-Pt based shape memory alloys

Shuai Ren(任帅)1,†, Chang Liu(刘畅)2, and Wei-Hua Wang(汪卫华)1,‡   

  1. 1 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; 2 Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2020-09-08 Revised:2020-10-10 Accepted:2020-10-28 Online:2020-12-17 Published:2020-12-23
  • Contact: †Corresponding author. E-mail: shuai.ren@iphy.ac.cn ‡Corresponding author. E-mail: whw@iphy.ac.cn
  • Supported by:
    Project supported by China Postdoctoral Science Foundation (Grant No. 2019M650880), the National Natural Science Foundation of China (Grant Nos. 51901243, 61888102, and 11790291), the Natural Science Foundation of Guangdong Province, China (Grant No. 2019B030302010), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB30000000).

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Abstract: Strain glass is a frozen short-range strain ordered state found in shape memory alloys recently, which exhibits novel properties around the ideal glass transition temperature T0. However, the T0 of current strain glass systems is still very low, limiting their potential applications and experimental studies. In this paper, we reported two new strain glass systems with relatively high T0. In Ti50Au50-xCrx alloys, the strain glass appears at x=25, and exhibits a T0 of 251 K, while in Ti50Pt50-yFey alloys, the strain glass takes place at y=30, and shows a T0 of 272 K. Both of them are comparable with the highest T0 value reported so far. Moreover, the phase diagrams of main strain glass systems in Ti-based alloys were summarized. It is found that the influence of the martensitic transformation temperature of the host alloy on the T0 of the strain glass is limited. This work may help to design new strain glass systems with higher T0 above ambient temperature.

Key words: shape memory alloys, martensitic transformation, strain glass, glass transition temperature

中图分类号:  (Martensitic transformations)

  • 81.30.Kf
81.30.Bx (Phase diagrams of metals, alloys, and oxides)