新型中锰热轧TRIP钢组织演变及力学性能  

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

作　　者：蔡志辉[1] 丁桦[1] 薛鑫[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第1期62-65,70,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金重点资助项目(51031001)

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1 000 MPa的抗拉强度和30%以上的断后延伸率,且强塑积>30 GPa.%.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.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 1 000 MPa,the elongation is over 30%,and the product of ultimate tensile strength and total elongation exceeds 30 GPa · %.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.

关 键 词：中锰 TRIP钢 固溶温度 显微组织 力学性能 

分 类 号：TG335.58[金属学及工艺—金属压力加工]