Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity

Lola Lilensten; Jean-Philippe Couzinié; Julie Bourgon; Loïc Perrière; Guy Dirras; Frédéric Prima; Ivan Guillot

doi:10.1080/21663831.2016.1221861

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Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity

Original Report | 更新时间：2026-08-19

- Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity
- Materials Research Letters Vol. 5, Issue 2, Pages: 110-116(2017)
- 作者机构：
  
  1. ICMPE (UMR 7182) CNRS-UPEC Université Paris Est
  2. LSPM (UPR 3407) CNRS Sorbonne Paris Cité Université Paris 13
  3. Chimie ParisTech CNRS Institut de Recherche de Chimie Paris PSL Research University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2016.1221861
  CLC：
- Online First：01 September 2016，
  
  Published：2017
- 稿件说明：
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Lola Lilensten, Jean-Philippe Couzinié, Julie Bourgon, et al. Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity[J]. Materials Research Letters, 2017, 5(2): 110-116.
DOI：

Lola Lilensten, Jean-Philippe Couzinié, Julie Bourgon, et al. Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity[J]. Materials Research Letters, 2017, 5(2): 110-116. DOI： 10.1080/21663831.2016.1221861.

摘要

Abstract

BSTRACTA new bcc Ti-rich high-entropy alloy (HEA) of composition Ti

27.5

was designed using the ‘d-electron alloy design’ approach. The tensile behavior displays a marked transformation-induced plasticity effect resulting in a high normalized work-hardening rate of 0.103 without loss of ductility when compared to the reference composition Ti

. In this paper

a detailed microstructural analysis was performed to understand the deformation process

revealing architectural-type microstructures and a high volume fraction (65%) of internally twinned stress-induced martensite

″

after mechanical testing. This study opens the way to mechanical properties optimization and enhancement of titanium-based HEAs by combining multiple alloying designs.

IMPACT STATEMENT

For the first time

proof is given that transformation-induced plasticity was triggered in a bcc refractory high-entropy alloy

leading to a twofold increase in the normalized work-hardening rate.

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