Microstructures and Mechanical Properties of Cold Rolled Medium Manganese Steel after Continuous Annealing
In this paper,effects of continuous annealing parameters on the microstructures and mechanical properties of cold-rolled 5Mn1Al steel were investigated.The results show that the microstructures of cold-rolled medium manganese steels consist of ferrite and reverted austenite after the continuous annealing.When the annealing temperature increases,the austenite grains evolve from lath-like to equiaxed morphology.The fraction of reverted austenite firstly increases and then decreases with the increasing temperature.The product of ultimate tensile strength and elongation can exceed 20GPa% after the proper continuous annealing.There are two types of strain-stress curves.One exhibits better elongation but limited work hardening,which is not beneficial for good formability.The other shows obvious work hardening and good plasticity,which seems to have good formability for auto applications if the austenite stability is further optimized.
medium manganese steel cold rolled reverted austenite continuous annealing microstructure and mechanical properties
HAN Yun CAO Jiali KUANG Shuang XIE Chunqian LI Zhen
Shougang Research Institute of Technology, Beijing 100043, China Technology Center, State Grid Xinyuan Company Ltd., Beijing 100161, China Beijing Shougang Cold Rolling Company Ltd., Beijing 101304, China
国际会议
成都
英文
275-278
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）