当前位置：首页 > 过刊浏览->2022年43卷第5期
铁素体/马氏体/奥氏体三相不锈钢铸造组织和力学性能研究
Microstructure and Mechanical Properties of a Ferrite/Martensite/Austenite Cast Stainless Steel
浏览(3222) 下载(13)
- DOI:
- 作者:
- 吴自翔 1 ，陈 祥 1，2 ，刘 源 1，2 ，张华伟 1，2
WU Zixiang1 , CHEN Xiang1,2, LIU Yuan1,2, ZHANG Huawei1,2
- 作者单位:
- 1. 清华大学 材料学院，北京 100084；2.先进成形制造教育部重点实验室，北京 100084
1.School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; 2. Key Laboratory for Advanced Materials Processing Technology, Ministry of Education of China, Beijing 100084, China
- 关键词:
- 铁素体；马氏体；残余奥氏体；时效处理
ferrite; martensite; retained austenite; aging treatment
- 摘要:
- 通过合金成分设计得到一种含铁素体、马氏体和奥氏体的铸态三相不锈钢（CTSS）。利用 Thermo-Calc 软件
模拟了平衡凝固过程组织转变情况，以及固溶温度对奥氏体稳定性影响。 利 用 Koistinen-Marburger（K-M）方 程 计
算 了 1 050 ℃固溶后残余奥氏体含量，与实际测量结果接近。 结果表明，经过时效处理，在 Laves 析出相和 TIRP 效应共
同作用下，试样的屈服强度、抗拉强度和洛氏硬度可以显著提高，而伸长率几乎保持不变。
A kind of casting triple-phase stainless steel(CTSS) containing ferrite, martensite and austenite was obtained by alloy composition design. Thermo-Calc software was used to simulate the microstructure transformation during equilibrium solidification and the effect of solution temperature on austenite stability. Koistinen-marburger (K-M) equation was used to calculate the residual austenite content after solution at 1 050 ℃, which is close to the actual measured results. The results show that after aging treatment, the yield strength, tensile strength and Rockwell hardness of the specimens under the combined action of Laves precipitate and TIRP effect can be significantly increased, while the elongation almost remains unchanged.