Effects of annealing temperature on the microstructure and properties of the 25Mn-3Si-3Al TWIP steel

查看全文 作　　者：Zhen-li Mi Di Tang Hai-tao Jiang Yong-juan Dai Shen-sheng [1]Li

机构地区：[1]National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China

出　　处：《International Journal of Minerals,Metallurgy and Materials》索引2009年第16卷第2期,共5页

基　　金：the National Natural Science Foundation of China (No.50575022);the Specialized Research Foundation for the Doctoral Program of Higher Education of China (No.20040008024);the National High-Tech Research and Development Program of China (No.2008AA03E502) 摘　　要：Microstructures and mechanical properties of the 25Mn twinning induced plasticity (TWIP) steel at different annealing temperatures were investigated. The results indicated that when the annealing temperature was 1000°C,the 25Mn steel showed ex-cellent comprehensive mechanical properties,the tensile strength was about 640 MPa,the yield strength was higher than 255 MPa,and the elongation was above 82%. The microstructure was analyzed by optical microscopy (OM),X-ray diffraction (XRD),and transmission electron microscopy (TEM). Before deformation the microstructure was composed of austenitic matrix and annealing twins at room temperature; at the same time,a significant amount of annealing twins and stacking faults were observed by TEM. Mechanical twins played a dominant role in deformation and as a result the mechanical properties were found to be excellent. 关键词：退火温度组织和性能综合力学性能微观结构分析透射电子显微镜钢透射电镜观察机械性能

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Effects of annealing temperature on the microstructure and properties of the 25Mn-3Si-3Al TWIP steel

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