Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy

Taotao Wang; Xiangxiang Rao; Qiang Zhang; Daqiang Jiang; Yang Ren; Lishan Cui; Kaiyuan Yu

doi:10.1080/21663831.2022.2141587

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Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy

Original Reports | 更新时间：2026-08-19

- Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy
- Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy
- 材料研究快报（英文） 2023年11卷第4期页码：250-258
- 作者机构：
  
  1. a Department of Materials Science and Engineering China University of Petroleum-Beijing Beijing People’s Republic of China
  2. b School of Materials Science and Engineering Shaanxi University of Technology
  3. a Department of Materials Science and Engineering China University of Petroleum,Beijing
  4. c Department of Physics City University of Hong Kong Kowloon
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2141587
  中图分类号：
- 网络首发：2022-11-11，
  
  纸质出版：2023
- 稿件说明：
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Taotao Wang, Xiangxiang Rao, Qiang Zhang, 等. Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy[J]. 材料研究快报（英文）, 2023,11(4):250-258.

Taotao Wang, Xiangxiang Rao, Qiang Zhang, et al. Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy[J]. Materials Research Letters, 2023, 11(4): 250-258.
Taotao Wang, Xiangxiang Rao, Qiang Zhang, 等. Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy[J]. 材料研究快报（英文）, 2023,11(4):250-258. DOI： 10.1080/21663831.2022.2141587.

Taotao Wang, Xiangxiang Rao, Qiang Zhang, et al. Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy[J]. Materials Research Letters, 2023, 11(4): 250-258. DOI： 10.1080/21663831.2022.2141587.

摘要

Abstract

BSTRACTThe temperature dependence of the critical stress of R→B19’ transformation in NiTi shape memory alloys remains unclear due to the difficulties in precisely identifying the phase constitution and acquiring sole R phase. Here we investigate the thermally- and stress-induced martensitic transformation in a near-equiatomic nanocrystalline NiTi alloy.

In situ

synchrotron X-ray diffraction is used to identify the phase evolution such that the temperature window for sole R phase is firmly determined. We find that the temperature dependence of R→B19’ is negative (−0.2 MPa/K) in our alloy

in sharp contrast to 3–5 MPa/K reported. Possible reasons for the discrepancies are discussed.

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相关机构

c Department of Materials Science and Engineering The Ohio State University Columbus

b Center of Microstructure Science Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University

a State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University

c Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge

a Department of Materials Science and Engineering Pusan National University

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