简要介绍了目前反应堆压力容器(RPV)用钢断裂韧度的两种表征方法——基于参考无延性转变温度(TNDT)的下限曲线法和基于参考温度(T0)的主曲线法,并阐述了断裂韧度的典型统计模型,以表征断裂韧度试验数据的分散性.基于所开发的概率断裂力学(PFM)分析程序,分析了不同统计模型对承压热冲击(PTS)条件下含缺陷RPV失效概率的影响,为国产RPV用钢断裂韧度数据的统计分析提供参考.
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