Revisiting the effect of localized alloying elements on stacking fault energy in austenitic steel

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-02-21 DOI:10.1016/j.msea.2025.148074

Zhenzhen Chen , Heyu Zhu , Yanfei Cao , Hongwei Liu , Zhipo Zhao , Xingqiu Chen , Dianzhong Li

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引用次数: 0

Abstract

The influence of alloying elements on the stacking fault energy and atomic fluctuations of austenite was rigorously studied through first-principles calculations and high-resolution characterization. The stacking fault energy of experimental steel was quantitatively determined, and the distribution of alloying elements near the stacking fault plane was analyzed. It was found that Co, Mo, Ni, and C elements tend to migrate away from stacking faults, but Cr and V elements do not have this trend. According to first-principles calculations, atomic fluctuations are caused by the competition between elements' formation and recovery effects on stacking fault configuration. Strikingly, we first found that C-Cr atomic clusters can pass through the stacking fault due to the strong binding energy between Cr and C, as well as the opposite effects of Cr and C on stacking fault configuration. This work offers insights into the relationship between elements and the plastic mechanism selection in alloy steels.

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.