基于等效理论研究1Cr18Ni9Ti蠕变-高温疲劳试验寿命

发布时间：2019-03-08 11:05

【摘要】：通过Manson公式研究了蠕变寿命与高温疲劳蠕变寿命之间的关系,并分别在600~700℃下对1Cr18Ni9Ti进行高温疲劳蠕变和蠕变试验,研究了温度对蠕变寿命的影响。采用SEM进行断口形貌观察及EDS能谱分析。结果表明:理论预测寿命均在实测寿命的2倍误差带内,证明了将高温疲劳蠕变寿命预测转换成蠕变寿命预测的可行性;试验温度高于625℃后对蠕变寿命的影响显著;断口处有大量的孔洞和氧化物出现,氧化薄膜周围容易形成裂纹源。
[Abstract]:The relationship between creep life and high temperature fatigue creep life was studied by means of Manson formula. The high temperature fatigue creep and creep tests of 1Cr18Ni9Ti were carried out at 600 鈩，

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