Effect of Si concentration on the liquid metal embrittlement susceptibility of advanced high strength steels

IF 3 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialia Pub Date : 2025-03-18 DOI:10.1016/j.mtla.2025.102390

Fateme Abdiyan , Joseph R. McDermid , Andrew Macwan , Bita Pourbahari , Mirnaly Saenz de Miera , Brian Langelier , Hatem S. Zurob

引用次数: 0

Abstract

Resistance spot welding (RSW) trials were performed on electrogalvanized steel sheets with 0.6 and 1.5 wt% Si. It was shown that LME cracks were longer in the 1.5Si alloy. Moreover, Atom Probe Tomography (APT) in the vicinity of the crack tips revealed (i) an accumulation of Si at the solid/liquid interface due to the low solubility of Si in the Zn-based liquid and (ii) greater Zn diffusion from the liquid into the bulk steel substrate on either side of the crack for the 0.6Si alloy. Diffusion simulations indicated that a longer time is needed for the solidification of the Zn-based liquid in the 1.5Si alloy compared with the 0.6Si alloy, further suggesting a prolonged period of contact between the aggressive Zn-based liquid and substrate grain boundaries in the case of the 1.5Si alloy.

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对含 0.6 和 1.5 wt% Si 的电镀锌钢板进行了电阻点焊 (RSW) 试验。结果表明，1.5 硅合金的 LME 裂纹更长。此外，裂纹尖端附近的原子探针断层扫描（APT）显示：(i) 由于硅在锌基液体中的溶解度较低，硅在固/液界面堆积；(ii) 在 0.6Si 合金中，Zn 从液体向裂纹两侧的钢基体扩散的程度更大。扩散模拟表明，与 0.6Si 合金相比，1.5Si 合金中 Zn 基液体的凝固需要更长的时间，这进一步表明在 1.5Si 合金中，侵蚀性 Zn 基液体和基体晶界之间的接触时间更长。

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

Materialia MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.40

自引率

2.90%

发文量

345

审稿时长

36 days

期刊介绍： Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials. Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).