热处理对冷作模具钢的组织与性能影响

发布时间：2018-10-25 15:35

【摘要】：以42CrMo模具钢为研究对象,采用拉伸试验、冲击试验、硬度测试和显微组织分析等方法,研究了淬火温度和回火温度对模具钢组织与力学性能的影响。结果表明,200℃低温回火时,随着淬火温度升高,模具钢的抗拉强度先上升后降低,而伸长率、断面收缩率、冲击韧度呈现下降趋势;600℃高温回火时,随着淬火温度的升高,模具钢的抗拉强度在1 040℃前略有降低,而伸长率、断面收缩率、冲击韧度和硬度整体呈现下降的趋势。200℃低温回火后的模具钢的强度满足要求,但是伸长率和冲击韧度均低于标准要求;600℃高温回火后,模具钢的强度、塑性和韧性都能满足冷作模具钢对基材的要求。
[Abstract]:The effects of quenching temperature and tempering temperature on the microstructure and mechanical properties of 42CrMo die steel were studied by means of tensile test, impact test, hardness test and microstructure analysis. The results show that the tensile strength of die steel increases first and then decreases with the increase of quenching temperature at 200 鈩，

本文编号：2294117