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用试验方法确定了20钢疲劳裂纹扩展的力学特性和变形综合特性,绘制了疲劳断裂曲线和弹塑性疲劳断裂曲线。指出,得到的抗裂特性完全可以表述裂纹弹性和弹塑性变形扩展时的钢的强度。
The mechanical properties and deformation characteristics of the 20 steel fatigue crack growth were determined by the test method. The fatigue fracture curves and the elastic-plastic fatigue fracture curves were drawn. It is pointed out that the obtained crack resistance can fully express the strength of steel when crack elasticity and elastic-plastic deformation expand.