研究了用现有ASTM、BS、GB标准评价高强高韧合金断裂韧性时存在的不适用问题,提出了修订现有标准的方法.提出了建立高强高韧合金发生较大范围屈服时的临界试样厚度BC和Rp0.2/E的对应关系;对由JIC转化获得的KIC进行了误差分析;提出了采用正交试验法确定单试样法J积分试验中的最佳试验参数.
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