压力容器2017，Vol.34Issue(7)：11-18,8.DOI:10.3969/j.issn.1001-4837.2017.07.003
蠕变断裂寿命外推方法及数据分散性处理研究
Study on Extrapolation Methods of Creep Rupture Life and Processing of Data Scattering
摘要
Abstract
The extrapolation of the creep rupture life is an important issue of high temperature structure integrity.Extrapolation of creep rupture life methods represented by Larson-Miller parameter(LMP) method is summarized,and the processing methods of creep rupture data scattering is introduced.Results indicate that creep rupture life of heat-resistant steel is usually overestimated by the LMP method,while multiregion analysis could improve extrapolation results;data scattering could be reduced in the aspects of experimental method,data selection and constant optimization.In addition,creep rupture life can be predicted using the Z parameter with the reliability included.关键词
寿命外推/Larson-Miller参数法/数据分散性/蠕变Key words
life extrapolation/Larson-Miller parameter method/data scattering/creep分类
机械制造引用本文复制引用
张效成,宫建国,轩福贞..蠕变断裂寿命外推方法及数据分散性处理研究[J].压力容器,2017,34(7):11-18,8.基金项目
国家自然科学基金资助项目(51475167,51325504) （51475167,51325504）
