李德君,白强,陈静静,吕能,冯耀荣,任凤章

• 1:石油管材及装备材料服役行为与结构安全国家重点实验室
• 2:中国石油集团石油管工程技术研究院
• 3:河南科技大学材料科学与工程学院

摘要(Abstract)：

研究了临界热处理工艺对基于奥氏体逆相变原理设计的Fe-0.1C-2.5Mn-0.6Ni低合金TRIP钢组织与力学性能的影响。结果表明:试验钢经两相区临界退火仅能获得少量的残留奥氏体,且残留奥氏体含量随着退火温度的升高呈现先增加后降低的趋势,740℃退火后钢中的残留奥氏体含量最高。试验钢临界退火后在高温回火处理过程中马氏体会通过逆相变转变成奥氏体,使得钢中的残留奥氏体含量大幅提高。680℃回火后,试验钢中的残留奥氏体含量达到最大值10.4%,钢的塑性和韧性由于相变诱发塑性(TRIP)效应而显著提高。与传统TRIP钢相比,本文研究的TRIP钢更适合于厚板材、厚壁管材的生产制造。

关键词(KeyWords)： 相变诱发塑性效应;临界热处理;残留奥氏体;力学性能

Abstract:

Keywords:

基金项目(Foundation): 陕西省重点研发计划(青年科技新星项目)(2017KJXX-06);; 中石油股份公司科技开发项目(2017F-19)

作者(Author): 李德君,白强,陈静静,吕能,冯耀荣,任凤章

DOI: 10.13289/j.issn.1009-6264.2018-0394

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