杨跃辉,梁国俐,苑少强

• 1:河北省智能装备数字化设计及过程仿真重点实验室唐山学院

摘要(Abstract)：

测定了中碳25Mn钢在不同温度下的冲击吸收能量,观察了断口处的变形组织特征,并结合层错能计算分析,讨论了实验钢在不同温度下的变形机制。结果表明:冲击断口处的组织中均含有大量的形变孪晶,但随着变形温度的降低,层错能也随之降低,有利于孪晶的形成,导致变形组织中的孪晶数量有所增加,此时实验钢的变形机制以TWIP为主;当温度降至-196℃后,层错能进一步降低,变形过程中发生形变诱导相变,马氏体的产生导致钢的韧性显著降低。

关键词(KeyWords)： 高锰钢;低温冲击;孪晶;变形机制

Abstract:

Keywords:

基金项目(Foundation): 河北省高端钢铁冶金联合研究基金项目(E2019105101);; 唐山市科技计划项目(18130218a)

作者(Author): 杨跃辉,梁国俐,苑少强

DOI: 10.13289/j.issn.1009-6264.2020-0337

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