INFLUENCE OF COLD ROLLING REDUCTION ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF TWIP STEEL

作     者：Z.L. Mi D. Tang Y.J. Dai H.Q. Wang S.S. Li 

作者机构：National Engineering Research Center for Advanced Rolling TechnologyUniversity of Science and Technology Beijing Beijing 100083 China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2007年第20卷第6期

页      面：441-447页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China (No. 50575022) Specialized Research Foundation for the Doctoral Program of Higher Education (No. 20040008024) 

主　　题：cold rolling reduction annealing temperature TWIP (twinning induced plasticity) steel twinning 

摘      要：The influence of cold rolling reduction on microstructure and mechanical properties of the TWIP （ttwinning induced plasticity） steel was investigated. The results＇ indicated that the steel had better comprehensive mechanical properties when cold rolling reduction was about 65.0% and the annealing temperature was 1000℃. The tensile strength of the steel is about 640MPa and the yield strength is higher than 255MPa, while the elongation is＇ above 82%. The microstructure is composed of austenitic matrix and annealing twins at room temperature, at the same time, a significant amount of annealing twins and stacking faults＇ are observed by transmission electron microscopy （TEM）. Mechanical twins play a dominant role during deformation, and result in exceUent mechanical properties.