文献类型：期刊文献

中文题名：辐照蠕变寿命外推方法

英文题名：Irradiation Creep Life Extrapolation Method

作者：胡靖东[1];轩福贞[1];张效成[1];刘长军[1]

机构：[1]华东理工大学承压系统与安全教育部重点实验室,上海200237

年份：2018

卷号：29

期号：24

起止页码：3014

中文期刊名：中国机械工程

外文期刊名：China Mechanical Engineering

收录：CSTPCD;;EI(收录号：20190506447569);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金资助项目(51475167)

语种：中文

中文关键词：快中子增殖反应堆;奥氏体不锈钢;辐照蠕变;寿命外推方法

外文关键词：fast breeder reactor;austenite stainless steel;irradiation creep;life extrapolation method

摘要：奥氏体不锈钢材料被广泛用于的第四代液态金属快中子增殖反应堆核心构件中,辐照和蠕变损伤耦合作用是影响其寿命的主要模式。为了建立短时辐照蠕变寿命外推的合理方法,在参考用于材料蠕变寿命外推的时间-温度参数法的基础上引入一个量纲一的辐照影响系数,根据辐照-时间-温度参数法推导出了含辐照影响系数的Lason-Miller参数方程和Dorn参数方程,并通过快堆内辐照蠕变数据进行了验证。新定义的辐照影响系数基本呈随温度上升先降后稳的趋势。
The austenitic stainless steel was selected as the structural material for the core part of the Gen Ⅳ liquid metal fast breeder reactor(LMFBR),and the in-plie lifetime was mainly affected by coupled creep and irradiation damage.In order to provide a proper in-pile irradiation creep life extrapo-lation method,the time-temperature parameter(TTP)method,which is usually used in material creep life prediction,was studied.Based on this,the irradiation-time-temperature parameter(ITTP)method was presented involving a new dimensionless factor called irradiation influence factor.The Larson-Milller parameter equation and the Dorn parameter equation with irradiation influence factor were deduced by ITTP method and checked by in-pile irradiation creep data.The newly defined irradiation influence factor generally appears to decrease firstly and then stabilize when temperature increases.