10Ni5CrMoV钢及其焊接接头Paris模型参数统计及疲劳裂纹扩展寿命预测

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英文篇名：The Statistical analysis on the Paris’s Fatigue Model Parameters and Prediction on Fatigue Crack Growth Life of 10Ni5CrMoV Steel and Its Joint 作者：成应晋 ; 王涛 ; 薛钢 ; 王任甫 英文作者：CHENG Yingjin;WANG Tao;XUE Gang;WANG Renfu;Luoyang Ship Material Research Institute; 关键词：疲劳裂纹扩展 ; 疲劳寿命 ; 高强钢 ; 统计分析 英文关键词：fatigue crack propagation;;fatigue life;;high strength steel;;statistical analysis 中文刊名：CLKY 英文刊名：Development and Application of Materials 机构：中国船舶重工集团公司第七二五研究所; 出版日期：2019-02-15 出版单位：材料开发与应用 年：2019 期：v.34 语种：中文; 页：CLKY201901001 页数：6 CN：01 ISSN：41-1149/TB 分类号：5-10

摘要

对10Ni5CrMoV钢及其接头疲劳裂纹扩展过程采用Paris模型进行拟合,并对参数c和m进行统计分析,结果表明,拟合得到的c和m与疲劳寿命吻合较好,lgc和m均符合正态分布,且具有良好的线性关系而疲劳裂纹扩展寿命呈成布尔分布。
        Based on Paris' s model of fatigue crack propagation, a fiting formula for the course of fatigue crack growth of 10 Ni5 CrMoV steel and its welded joint was set up, and a statistical analysis on parameters c and m of the formula and fatigue crack growth life was carried out. The results showed that the parameters c and m were in good agreement with fatigue life data, the data of lg c and m complied with normal distribution and had great linear independence, and the fatigue crack growth life was a weibull distribution.

引文

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