摘要
0.14C-5Mn钢(/%:0.14C、5.0Mn、0.008P、0.002S、0.0030N)由50 kg真空感应炉冶炼,轧成4 mm板材(终轧温度1000℃,空冷)用扫描电子显微镜,X射线衍射法和单轴拉伸试验研究了0.14C-5Mn钢热轧4 mm板550～650℃6 h退火后的组织和力学性能。结果表明,热轧0.14C-5Mn钢退火过程中产生了奥氏体(发生相变诱发塑性-TRIP效应),随退火温度的升高,奥氏体体积分数逐渐增加,钢的伸长率和强塑积(抗拉强度与断后伸长率的乘积)明显增加,650℃6 h退火时奥氏体体积分数达30.11%,该钢的抗拉强度为945 MPa,强塑积为37.3 GPa%
The 0. 14C-5Mn steel （/% ： 0. 14C, 5.0Mn, 0. 008P, 0. 002S, 0. 003 ON） is melted by a 50 kg vacuum induction furnace and rolled to 4 mm pate （ finishing temperature 1 000 QC , air cooling）. The structure and mechanical properties of 4 mm plate of 0. 14C-5Mn steel annealed at 550 - 650 ~C for 6h are studied by scanning electron microscope, X-ray diffraction analysis and uniaxial tensile test. Results show that the austenite is produced in annealing process of 0.14C-5Mn steel （occurring transformation-induced plasticity-TRIP effect） , and with increasing annealing temperature the volume fraction of austenite increases and the elongation and product of tensile strength to elongation increase obviously. With annealing at 650 ℃ for 6 h the austenite fraction in steel is up to 30. 11% , the tensile strength of steel is 945 MPa and the product of tensile strength to elongation is 37.3 GPa%.
出处
《特殊钢》
北大核心
2013年第1期56-58,共3页
Special Steel
基金
国家重点基础研究开发计划项目(No2010CB630803)
关键词
0
14C-5Mn钢
退火
奥氏体
逆相变
力学性能
0. 14-5Mn Steel, Annealing, Austenite, Reverted Transformation, Mechanical Properties
