回火温度对Q550D钢板组织和性能的影响  

EFFECT OF TEMPERING TEMPERATURE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Q550D STEEL

作　　者：孙电强 杜琦铭 成慧梅 

机构地区：[1]河钢集团邯钢公司技术中心,河北邯郸056015

出　　处：《河北冶金》2018年第2期15-17,共3页Hebei Metallurgy

摘　　要：通过对Q550D钢板TMCP态不同温度的回火处理,研究了钢板的强度、延伸率、冲击性能、屈强比和金相组织随回火温度的变化情况。试验结果表明:随着回火温度的上升,抗拉强度呈下降趋势,屈强比呈上升趋势;在550~600℃附近存在韧塑性降低现象。The change of the strength,elongation,impact properties,yield ratio and microstructure are investigated through tempering process treatment under different temperature for Q550 D TMCP steel. The results indicate that the tensile strength decreases and the yield ratio increases with the increasing of tempering temperature;and the toughness and plasticity decrease between 550 ℃ and 600.

关 键 词：回火温度 钢板 组织 性能 影响 

分 类 号：TG335.5[金属学及工艺—金属压力加工]