摘要
用预制裂纹的CHARPY试样在装备有载荷、位移传感器及微型计算机的冲击试验机上测定了PCrNi3MoVA钢的动态断裂性能,比较了不同冲击速度,不同载面尺寸的试样对K_(Id)的影响,并测出了低温-40℃时的K_(Id)值.
The Dynamic fracture behavior of PCr Ni3MoVA steel is determined by usieg the fatigue precrackingCHARPY specimen and impact tester equipped with force anddisplacement transducer and microcomputer. The effect of di-fferent impact velocity and different size of section on K_(Id) iscompared, and the K_(Id) value at low temperature(-40℃)is measured.
关键词
钢
动态断裂韧性
力学冲击
Steel
Dynamic fracture toughness
Mechanical shock
Stress intensity factor
Mechanical property test
