Effect of BainiticTreatment on Microstructure and Mechanical Properties of TRIP Cold-Rolled Steel Sheets
The effects of bainitic treatment on microstructure and mechanical properties of 0.10C-1.5Mn-l.5Al TRIP-aided cold-rolled steels have been investigated. The samples were heated by intercritical annealing at 820℃ for 2 min and quenched in banitic temperature with different hoding time for 5 to 300s, two salt bath were used for the heat treatment. Experimental results show that the yield strength and elongation increase with the increasing of bainitic holding time, while the tensile strength decrease. The volume fraction of retained austenite rise at the beginning of bainitic holding and then reduce, the carbon content of retained austenite increase during the bainitic holding. The tensile strengthen multiply elongation reaches the highest value at 120s.The mechanical stability of retained austenite fits well with strain hardening during deformation.
TRIP bainitic treatment microstructure mechanical properties retained austenite
JING Cai-nian LIU Jing-guang YU Cheng-xue WANG Zuo-cheng KIM Sung-joon
Shandong Jianzhu University, Jinan 250101, China Shandong University, Jinan 250061, China Korea Institute of Machinery Science, Changwon 641010, Korea
国际会议
The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)
北京
英文
930-933
2011-05-31（万方平台首次上网日期，不代表论文的发表时间）