王雷,BENITO J A,CALVO J,CABRERA J M

• 1:西安石油大学材料科学与工程学院
• 2:加泰罗尼亚理工大学工业工程学院
• 3:材料科学与冶金工程系ETSEIB
• 4:加泰罗尼亚理工大学

摘要(Abstract)：

研究了等径通道挤压技术对于一种低碳高锰孪晶诱导塑性变形(TWIP)钢力学性能,微观结构以及织构性能的影响。微拉伸实验结果表明:TWIP钢维氏硬度值,屈服强度和抗拉强度随挤压道次增长不断升高,而塑性则下降。通过EBSD分析,结果表明经等径通道挤压,平均晶粒尺度由原始状态下的199.6μm减小到不足1μm,孪晶比例也随之下降。关于ECAP挤压后的织构演化,EBSD结果表明原始状态下的主导织构为Goss和Brass,而在挤压后,逐渐由一道次的A*1和A*2织构向多道次的B/B·织构过渡。这表明了多道次挤压后材料呈现了更加稳定的微观结构。

关键词(KeyWords)： TWIP钢;等径通道挤压技术(ECAP);微观结构;织构;力学性能

Abstract:

Keywords:

基金项目(Foundation): 中国留学基金委资助项目(CSC);; 西班牙政府项目(MAT2014-59419-C3-1-R)

作者(Author): 王雷,BENITO J A,CALVO J,CABRERA J M

DOI: 10.13289/j.issn.1009-6264.2016.11.015

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