东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2013, Vol. 34 ›› Issue (1): 62-66.DOI: -

• 论著 • 上一篇    下一篇

新型中锰热轧TRIP钢组织演变及力学性能

蔡志辉，丁桦，薛鑫   

  1. (东北大学材料与冶金学院，辽宁沈阳110819)
  • 收稿日期:2012-07-10 修回日期:2012-07-10 出版日期:2013-01-15 发布日期:2013-01-26
  • 通讯作者: 蔡志辉
  • 作者简介:蔡志辉(1985-)，男，福建漳州人，东北大学博士研究生；丁桦(1958-)，女，安徽合肥人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金重点资助项目(51031001).

Microstructure Evolution and Mechanical Properties of a Novel Medium-Mn Hot-Rolled TRIP Steel

CAI Zhi-hui， DING Hua， XUE Xin   

  1. School of Materials ＆ Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2012-07-10 Revised:2012-07-10 Online:2013-01-15 Published:2013-01-26
  • Contact: CAI Zhi-hui
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摘要： 利用Thermo-Calc软件设计了一种中锰相变诱导塑性(TRIP)钢，利用全新的热处理工艺对其进行处理，研究了残余奥氏体的含量及其稳定性，并对该钢的显微组织和力学性能进行了分析.结果表明，实验用钢可获得接近1000MPa的抗拉强度和30%以上的断后延伸率，且强塑积>30GPa·%.固溶温度对钢的力学性能具有显著影响，热轧TRIP钢固溶温度为750~800℃时，实验钢获得最佳的力学性能.

关键词: 中锰, TRIP钢, 固溶温度, 显微组织, 力学性能

Abstract: A new heat treatment was applied to a novel medium manganese transformation induced plasticity (TRIP) steel designed with the Thermo-Calc software. The proportion and stability of retained austenite were studied， and the microstructure and mechanical properties of the experimental steel were analyzed. The results showed that the tensile strength of tested steel is nearly 1000MPa， the elongation is over 30%， and the product of ultimate tensile strength and total elongation exceeds 30GPa·%. The mechanical properties are significantly influenced by the solution temperature. When the hot-rolled steels are treated at the solution temperature range of 750~800℃， the best properties are obtained.

Key words: medium manganese, TRIP steel, solution temperature, microstructure, mechanical properties

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