针对9310钢研究了试验参数对疲劳小裂纹门槛值测试结果的影响.结果表明,对于9310高强钢采用恒Kmax/升Kmin方法进行小裂纹门槛值试验时,规范化的应力强度因子梯度CK和Δα值的选取对门槛值的影响很小.当Kmax在线弹性范围内选取时,由于裂尖过程区的断裂机制未发生变化,Kmax的选取对门槛值测试结果也基本没有影响.
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