有些人认为硬化的灰铸铁过去曾使零件很容易腐朽老化(因为经过数百万次的应力反向处理后的金属零件最后都会这样)。

Some believe that the hardened gray iron used to make the components simply "fatigues" with age-as metal parts that go through millions of stress reversals eventually do.

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实验结果表明，对于无明显峰值应变的应力-应变曲线，采用加工硬化率方法确定峰值应变和稳态应变是一种有效的方法。

Test results show that for the stress-strain curves with no obvious peak strain, it is a available to use work hardening rate method to determine peak strain and stable strain.

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弹性范围，塑料范围（当材料以不变的应力流动时），应变硬化范围和发生颈缩现象以其断裂终止的范围。

The elastic range, the plastic range (during which the material flows at a constant stress), the strain-hardening range, and the range during which necking occurs, terminating in fracture.

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