The role of interaction work in martensite deformation

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2024-10-30 DOI:10.1016/j.scriptamat.2024.116433

J.F. Xiao, C. Cayron, R.E. Logé

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引用次数: 0

Abstract

This study elucidates the evolution of martensite deformation via Interaction Work (IW). The IW is the mechanical work done by external loading, assisting deformation by competing with the energy barrier. This interplay establishes the maximum IW (IW_max) criterion for variant selection of different deformation modes. Considering multiple deformation modes (A, B, …), the deformation mode with

m i n {I W_{m a x}^{A}, I W_{m a x}^{B}, \dots}

is expected to be activated first due to a lower energy barrier when subjected to deformation, which hints the evolution of martensite microstructures with the increasing trajectory of IW_max of various deformation modes. We validated this hypothesis by examining reorientation and deformation twinning in monoclinic martensite (B19’) in NiTi, orthorhombic (α’’), hexagonal martensite (α’) in Ti-based alloys, and γ’ martensite in CuAlNi shape memory alloys, and by comparing the predictions with existing literature.

Abstract Image

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相互作用功在马氏体变形中的作用

本研究通过交互功（IW）阐明了马氏体变形的演变过程。IW 是外部加载所做的机械功，通过与能量屏障竞争来帮助变形。这种相互作用为不同变形模式的变体选择确立了最大 IW（IWmax）标准。考虑到多种变形模式（A、B、......），具有最小{IWmaxA,IWmaxB,......}的变形模式在受到变形作用时由于能量势垒较低而有望首先被激活，这就暗示了马氏体微结构的演变会随着各种变形模式的 IWmax 轨迹的增加而增加。我们通过研究镍钛合金中的单斜马氏体（B19'）、钛基合金中的正方马氏体（α''）、六方马氏体（α'）和铜铝镍形状记忆合金中的γ'马氏体的重新取向和变形孪晶，并将预测结果与现有文献进行比较，验证了这一假设。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.