夏比冲击功结合剪切面积评价管线钢管韧性的意义

The Significance of Combining Charpy Impact Value with Shear Area in Evaluating the Pipeline Toughness

描述了夏比冲击宏观断裂过程,并对管线钢管材料在冲击载荷作用下发生断裂全过程力的变化以及冲击吸收能量与宏观断口的关系进行分析,指出了夏比冲击功结合剪切面积评价管线钢管材料韧性的必要性。

Macro-rupture process of Charpy Impact is described first in the paper.Then the analysis focuses on the diversity of force crossing the whole process of pipeline material rupture under impact load and the relations between impact absorbed energy and macro-fracture.At last it is pointed out that it is necessary to combine Charpy Impact Value with shear area in the evaluation of pipeline material toughness.