Thermal stability of austenite and properties of Q&P treated AHSS
A Fe-0.2C-1.87Mn-1.42Si-0.0405Al steel subjected to an appropriate Quenching & Partitioning treatment (Q&P) exhibits the combination of high tensile strength (1311MPa) and high elongation (13.6％). The thermal decomposition of retained austenite in the as-treated steel has been studied at an elevated temperature of 500℃ by means of differential scanning calorimetry (DSC). Activation energy has been obtained by performing a Kissinger analysis method. The DSC results show that the activation energy of thermal decomposition of the retained austenite in this Q&P steel is 221.3KJ/mol, which is in a good agreement with the result of retained austenite in similar chemical composition steel subjected to a TRansformation Induced Plasticity (TRIP) treatment. This investigation helps to investigate the stability of retained austenite in Q&P steels upon cooling or under external stress.
Quenching & Partitioning (Q&P) differential scanning calorimetry(DSC) Kissinger analysis method
R. M. Wu L. Wang X. J. Jin
School of Materials Science and Engineering,Shanghai Jiao Tong University, 800 Dongchuan Rd, Shangha Baosteel Research and Development Technology Center, Shanghai 201900, China School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd, Shangh
国际会议
北京
英文
118-122
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）