By the new (equivalent) strain equations, M-C(Manson-Coffin)fatigue models of Zr-4 alloy were obtained based on (the strain) fatigue test results of Zr-4 alloy.

• 由应变等效方法和疲劳试验结果；得到了Zr 4合金的M C(Man son Coffin)寿命估算模型.