Abstract

The critical temperature condition for softening behavior of AISI P21 steel during laser-assisted heat treatment is suggested by three-dimensional transient simulation with a finite different method. Temperature history of the cross-sectional region during laser-assisted heat treatment at 1273 K was simulated. The critical temperature condition for formation of the softening zone was assumed to range from 900 to 1008 K, based on this peak temperature history. Formation of the softening zone was simulated based on the assumed critical temperature condition. Morphology and area of simulated softening zone was compared with the experimentally obtained results, and these were well matched. In this regard, critical temperature condition for formation of the softening zone during laser-assisted heat treatment was identified to range from 900 to 1008 K.

Graphic Abstract

中文翻译：

---

激光热处理含铜中碳钢表面软化行为的数值模拟

摘要

通过有限差分法的三维瞬态模拟，提出了AISI P21钢在激光辅助热处理过程中软化行为的临界温度条件。模拟了激光辅助热处理在1273 K时的横截面温度历史。基于该峰值温度历史，假设形成软化区的临界温度条件为900至1008K。基于假定的临界温度条件模拟了软化区的形成。将模拟软化区的形貌和面积与实验获得的结果进行了比较，两者相匹配。就这一点而言，在激光辅助热处理过程中形成软化区的临界温度条件被确定为900至1008K。

图形摘要