应变条件下锆的HCP-FCC相变行为的原位分析

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-02-03 DOI:10.1016/j.jallcom.2025.178989

Zhonglin Shen, Chengze Liu, Jing Liu, Jinping Wu, Yi Liu, Naizhi Liu, Yusheng Zhang

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引用次数: 0

摘要

利用透射电子显微镜结合原位张力电子背散射衍射（EBSD）技术研究了Zr中面心立方（FCC）相的应力诱导相变行为。在室温下，当拉伸方向垂直于[0001]轴时，六边形密排（HCP） Zr应变至屈服点时，FCC-Zr的体积分数显著提高。变形过程中，FCC-Zr在晶粒中的最大体积分数达到~5.4%。晶体学分析表明，在特定的加载方向下，施密特因子最低的六角形密排（HCP） Zr矩阵会优先通过肖克利部分位错滑移转变为b型FCC-Zr。

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HCP-FCC phase transition behavior of zirconium under straining – An in-situ analysis

This study investigated the stress-induced phase transformation behavior of face-centered cubic (FCC) phase in Zr using transmission electron microscopy, combined with in-situ-tension electron backscattered diffraction (EBSD). The volume fraction of FCC-Zr significantly improved while the hexagonal close-packed (HCP) Zr strained to yielding point, when the tensile direction was perpendicular to [0001] axis at room temperature. The maximum volume fraction of FCC-Zr in the grains reached ∼5.4 % during the deformation. Crystallographic analysis revealed that with specific loading directions, hexagonal close-packed (HCP) Zr matrix with the lowest Schmidt factor would preferentially transform into B-type FCC-Zr, through slipping of Shockley partial dislocations.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.