Transmission-scanning electron microscopy of interface fracture of ferrite deformation twins

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

MRS Communications Pub Date : 2024-06-25 DOI:10.1557/s43579-024-00595-8

Abdalrhaman Koko, T. James Marrow

引用次数: 0

Abstract

Deformation twins in the ferrite matrix of an age-hardened duplex stainless steel have been observed using on-axis transmission Kikuchi diffraction (TKD) in a scanning electron microscope. This provided details of the lattice misorientation and dislocation arrangement, including the dislocation-free zone at the twin tip. These observations provide evidence for the link between microcracking of the irregular twin/parent interface and relaxation of the residual strains that arise from twin growth, offering new insights into fracture mechanics in these materials.

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铁素体变形孪晶界面断裂的透射扫描电子显微镜观察

利用扫描电子显微镜中的轴向透射菊池衍射（TKD）技术，对时效硬化双相不锈钢铁素体基体中的变形孪晶进行了观察。这提供了晶格错向和位错排列的细节，包括孪晶尖端的无位错区。这些观察结果为不规则孪晶/母材界面的微裂纹与孪晶生长过程中产生的残余应变的松弛之间的联系提供了证据，为这些材料的断裂力学提供了新的见解。

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

MRS Communications MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

2.60

自引率

10.50%

发文量

166

审稿时长

>12 weeks

期刊介绍： MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.