超高强度工程结构用钢的热处理工艺优化

发布时间：2018-01-13 02:09

  本文关键词：超高强度工程结构用钢的热处理工艺优化　出处：《热加工工艺》2016年22期 　论文类型：期刊论文

  更多相关文章： 热处理工艺 含铟超高强钢 等温退火 淬火温度 回火温度

【摘要】：采用不同的预先热处理、淬火和回火工艺,对含铟超高强度工程结构用钢进行了热处理。并分析了显微组织,测试了拉伸性能和冲击性能。结果表明,与常规退火相比,等温退火使室温抗拉强度增加30%,屈服强度增加33%,断后伸长率增加140%,冲击韧性增加51%。随淬火温度或回火温度的提高,其室温抗拉强度、屈服强度、断后伸长率和冲击韧性均先提高后降低。预先热处理工艺优选为等温退火工艺,淬火温度优选为840℃,回火温度优选为180℃。
[Abstract]:Different pre-heat treatment, quenching and tempering processes were used to heat treat the ultrahigh strength engineering structural steel containing indium. The microstructure of the steel was analyzed, and the tensile and impact properties were tested. Compared with conventional annealing, isothermal annealing increases the tensile strength at room temperature by 30%, the yield strength by 33%, and the elongation after break by 140%%. With the increase of quenching temperature or tempering temperature, the tensile strength and yield strength at room temperature are increased. The elongation and impact toughness increased first and then decreased. The preheat treatment process was optimized as isothermal annealing, quenching temperature was 840 鈩，

本文编号：1416986