The dynamic spallation and deformation mechanisms of M42 steel under high strain rate

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

Materials Science and Engineering: A Pub Date : 2025-04-11 DOI:10.1016/j.msea.2025.148332

Jian Zhang , Zhepeng Wang , Jin Huang , Zhiguo Li , Ruizhi Zhang , Guoqiang Luo , Qiang Shen

引用次数: 0

Abstract

This study investigated the dynamic spallation behavior of M42 steel within the strain rate range of 10⁵ to 10⁶ s⁻¹, focusing on the effects of strain rate on its mechanical properties, such as spall strength. The spallation and deformation mechanisms of M42 steel under high strain rates were revealed. The results show a positive correlation between the spall strength of M42 steel and strain rate within the strain rate range of 1.75–9.08 × 10⁵ s⁻¹, indicating stable strain rate sensitivity. The stress concentration at the carbide-matrix interface was identified as the primary site for crack initiation. The hindrance of dislocation movement by carbides plays a crucial role in the failure mechanisms of M42 steel. This study also showed that the deformation mechanism of M42 steel is a combination of slip and twinning.

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高应变速率下M42钢的动态剥落及变形机理

本文研究了M42钢在105 ~ 106 s−1应变速率范围内的动态剥落行为，重点研究了应变速率对M42钢剥落强度等力学性能的影响。揭示了M42钢在高应变速率下的剥落和变形机理。结果表明：在1.75 ~ 9.08 × 105 s−1应变率范围内，M42钢的剥落强度与应变率呈正相关，表现出稳定的应变率敏感性；碳化物-基体界面处的应力集中是裂纹萌生的主要部位。碳化物对位错运动的阻碍在M42钢的失效机制中起着至关重要的作用。研究还表明，M42钢的变形机制是滑移和孪晶的结合。

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

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.