The surface-crack fracture toughness KIe values of 18Ni (250 degree) martensite aging steel base and arc welding joint (heat influence part and welding metal) were tested according to the standard GB7732-87.
依据国标GB7732-87,对18Ni（250级）马氏体时效钢基体和亚弧焊焊接接头（热影响区和焊缝金属）的表面裂纹断裂韧度K1e值进行测试。
参考来源 - 18Ni马氏体时效钢基体及氩弧焊焊接接头的表面裂纹断裂韧度K·2,447,543篇论文数据，部分数据来源于NoteExpress
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