In subsequent releases of WebSphere Application Server, the number of hardening steps was significantly reduced and, more importantly, most of the steps that remain became less critical.
Hardening. This is the process of heating to a temperature above the critical range, and cooling rapidly enough through the critical range to appreciably harden the steel.
淬火。这个工艺是把材料加热到临界温度范围之上，然后迅速冷却到临界温度范围以下，使钢材明显变硬。
3
Presumably, it is due to their different critical values of the ratio of slip plane hardening rate to current tensile stress for shear localization.