Microstructure and mechanical behavior of cold-rolled CMnAlSi TRIP-aided steel sheets
The microstructure, mechanical properties and retained austenite stability of CMnAlSi-TRIP steels were investigated. Optical microscopy and X-ray diffractometry were used to analyze the microstructure, volume fraction and carbon concentration of retained austenite, while the tensile tests were performed to study the retained austenite stability against strain-induced martensitic transformation. The results show that the mechanical properties of the CMnAISi cold-rolled tRIP-aided steels fabricated by proper heat treatment display good combination of strength and ductility after isothermal bainitic transformation (IBT)treatment at 420-450 ℃ for 60-120 s. The austenite transformation kinetics is influenced significantly by the IBT temperature, and the high mechanical stability of retained austenite, governed by its carbon concentration, and determines high strain hardening during deformation.
transformation induced plasticity(TRIP) isothermal bainitic transformation (IBT) mechanical properties retained austenite stability
JING Cai-nian WANG Ming-gang WANG Zuo-cheng TAN Qi-zhong Sung-Joon KIM
School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China Schoo School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, China School of Materials Science and Engineering, Shandong University, Jinan 250061, China Korea Institute of Machinery and Materials, Changwon 641010, Korea
国际会议
2009 Frontier Symposium of China Postductors on Materrials Science(2009年中国博士后材料科学前言论坛)
长沙
英文
579-582
2009-11-22（万方平台首次上网日期，不代表论文的发表时间）