秦小梅,邸洪双,陈礼清,邓伟

• 1:东北大学轧制技术及连轧自动化国家重点实验室
• 2:中国一重能源装备材料科学研究所

摘要(Abstract)：

研究了TWIP钢Fe-23Mn-2Al-0.2C固溶处理后的组织演变和拉伸变形行为,并对其变形机制进行了探讨。结果表明:随固溶温度升高,实验钢的晶粒尺寸逐渐增大,屈服强度和抗拉强度均降低,伸长率增大,强塑积先增大后减小,在900℃时达到最高;实验钢的拉伸变形呈现连续屈服,同时随固溶温度升高,加工硬化速率(dσ/dε)与真应变(ε)的变化关系由2阶段变为3阶段。通过OM和TEM观察显示,随着晶粒尺寸的增加,变形过程中形变孪晶数量增多,孪晶诱导塑性(TWIP)效应增大。

关键词(KeyWords)： TWIP钢;晶粒尺寸;加工硬化速率;TWIP效应

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划项目(2011CB606306-2);; 中央高校基本科研业务费(N100507003)

作者(Author): 秦小梅,邸洪双,陈礼清,邓伟

DOI: 10.13289/j.issn.1009-6264.2012.01.017

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