Effect of Test Temperature on Tensile Properties of TRIP Steel Under Different Processes
Author of the article:WANG Fabing;LI Zhuang;WANG Haoxu;ZHANG Runqi;CAI Yiqin;DAI Jianke;YU Tao;LI Zhaohua
Author's Workplace：School of Materials Science and Engineering,Shenyang Aerospace University,Shenyang 110136,China
Key Words：TRIP steel tensile temperature TRIP effect mechanical properties
Abstract：The study of the influence of tensile test temperature on the mechanical properties of TRIP steel is an important reference value for exploring the technological parameters of strip temperature processing and forming. After hot rolling, A and B TRIP steels were kept in a salt furnace for 3 min and 5 min respectively, and then tensile tests were conducted at50~350 ℃ to compare the changes in mechanical properties. The results show that when samples A and B are tensile test at 200 ℃ and 250 ℃, the tensile strength reach the peak value due to the TRIP effect, reaching 895 MPa and 881 MPa respectively. At 100 ℃, the elongation reach 36% and 38%. At 300 ℃ and 350 ℃, the strain induce martensitic transformation do not occur, so the tensile strength and elongation are reduced. Sample B has A more significant TRIP effect because its residual austenite is more stable, and its mechanical properties are better than that of sample A.
