A Cooperative Study for the Evaluation of Crack Arrest Toughness of RPV Materials in Japan
A Cooperative Study for the Evaluation of Crack Arrest Toughness of RPV Materials in Japan
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日本RPV材料止裂韧性评价合作研究
DOI：
10.1520/stp33094s
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Y. Ando
中科院分区：
文献类型：
--
作者：
Y. Sakai;G. Yagawa;Y. Ando
采用ASTM推荐试样和ESSO试样对ASTM A533B 1级和A508 3级钢的裂纹止裂韧性K a进行了研究。结果表明，根据ASTM试验方法测得的K a值随试验温度的升高而增大，该方法的尺寸要求适合于获得平面应变止裂韧性K a的有效值。还发现，当应用于相同尺寸的大型试件时，ASTM和ESSO测试得出的止裂韧性值大致相同。在测试材料上，K I a数据的下界明显低于K I c数据的下界，尽管这两个边界都远远超过美国机械工程师学会（ASME） K I R曲线。
Results are presented from an investigation of crack arrest toughness K a , on ASTM A533B Class 1 and A508 Class 3 steels using ASTM-proposed specimens and ESSO specimens. The results show that the values of K a , measured in accordance with the ASTM test method, increased with an increase in test temperature, and that the size requirements in the method were appropriate to obtain valid values of plane-strain crack arrest toughness K I a . It was also found that the ASTM and ESSO tests lead to about the same crack arrest toughness values when applied to large specimens of the same size. The lower bound of K I a data was significantly under that of K I c data on the test materials, though both bounds were well over the American Society of Mechanical Engineers (ASME) K I R curve.