管线钢冲击吸收功测量的尺寸效应  

SPECIMEN SIZE EFFECTS ON MEASURING OF IMPACT ENERGY OF PIPELINE STEELS

作　　者：吴令萍[1] 陈迎锋[1] 侯世颖[1] 路民旭[1] 

机构地区：[1]北京科技大学腐蚀与防护中心,北京100083

出　　处：《理化检验（物理分册）》2008年第6期299-302,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：对20钢、16Mn钢和X70钢不同宽度试样在-80～40℃范围内进行夏比冲击试验，研究了非标准尺寸试样冲击功与标准试样冲击功之间的关系，比较了大小试样韧脆转变温度的不同；把试验结果与ASTM标准、BS标准进行对比，不同尺寸试样的韧脆转变温度漂移程度相差很大。并对上平台冲击功的换算公式做了修正。The correlation between the impact energy of standard sized specimens and sub-sized specimens was investigated through series of Charpy V-Notch （CVN） impact tests on 20, 16Mn and X70 steels at different temperatures ranging from -80 ℃ to 40 ℃, The ductile-brittle transition temperature （DBTT） of specimens with different sizes were also studied. All the results were contrasted to the ASTM and BS standards and a correction of the formula of the upper shelf impact energy was finally reached.

关 键 词：冲击功 韧脆转变温度 尺寸效应 管线钢 

分 类 号：TG113.25[金属学及工艺—物理冶金]