In-situ observations of a hierarchical twinning–detwinning process in stress-induced α″-martensite of Ti-12Mo alloy

Bingnan Qian; Min Yang; Lola Lilensten; Philippe Vermaut; Fan Sun; Frédéric Prima

doi:10.1080/21663831.2021.2013967

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In-situ observations of a hierarchical twinning–detwinning process in stress-induced α″-martensite of Ti-12Mo alloy

Original Reports | 更新时间：2026-08-19

- In-situ observations of a hierarchical twinning–detwinning process in stress-induced α″-martensite of Ti-12Mo alloy
- Materials Research Letters Vol. 10, Issue 2, Pages: 45-51(2022)
- 作者机构：
  
  1. a Institut de Recherche de Chimie Paris PSL University Chimie ParisTech CNRS
  2. b School of Automation Northwestern Polytechnical University
  3. a Institut de Recherche de Chimie Paris PSL University Chimie ParisTech CNRS Paris France
  4. c Sorbonne Universities UPMC University Paris UFR,926
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.2013967
  CLC：
- Online First：17 January 2022，
  
  Published：2022
- 稿件说明：
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Bingnan Qian, Min Yang, Lola Lilensten, et al. In-situ observations of a hierarchical twinning–detwinning process in stress-induced α″-martensite of Ti-12Mo alloy[J]. Materials Research Letters, 2022, 10(2): 45-51.
DOI：

Bingnan Qian, Min Yang, Lola Lilensten, et al. In-situ observations of a hierarchical twinning–detwinning process in stress-induced α″-martensite of Ti-12Mo alloy[J]. Materials Research Letters, 2022, 10(2): 45-51. DOI： 10.1080/21663831.2021.2013967.

摘要

Abstract

Beyond classic martensitic transformation-induced plasticity (TRIP)

consecutive hierarchical twinning in the primary martensite is observed providing additional tensile strain about two-to-three times higher than the original transformation strain. The hierarchical twinning

operating in two different modes

contributes to at least one quarter of the plasticity in TRIP/TWIP Ti-12Mo alloy at early deformation stage. During tensile unloading

a peculiar multi-step detwinning process reverses the mechanically twinned martensite to its original orientation

resulting in rubber-like behavior. The complex reversible twinning process is investigated by combining in-situ EBSD/TEM experiments and theoretical rationalization with respect to Schmid factors and twin variant selection.

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