疲劳硬化 meaning in English

fatigue hardening

The second stage is a cyclic softening course , and what ' s more , the greater the strain amplitude , the greater the trend of softening
在所有试验条件下合金的疲劳硬化阶段都很短暂，疲劳寿命的极大部分是消耗在缓慢的循环软化阶段。
Through research into the low - cycle fatigue behavior of gh4145 / sq , we found out that the control of strain at any level is not a stable course but has three obvious stages . the first stage is a rapid cyclic hardening course for any strain control
对gh4145 / sq合金在总应变幅控制下的对称拉压低周疲劳研究表明：在循环形变过程中合金主要表现为初始疲劳硬化、随后疲劳软化及最终失稳断裂三个阶段，疲劳硬化软化行为与作用应变幅相关。