氢对金属材料断裂激活能的影响

Effect of Hydrogen on Fracture Activation Energy of Metallic Materials

摘要:

研究了两种低碳锰钢在空气和Ｈ２Ｓ腐蚀介质条件下断裂寿命与应力温度的关系，并从断裂激活能的角度分析了氢的影响。结果表明：氢的存在使断裂激活能约降低７４％。这说明其减弱了原子间键合力。

Abstract:

The relation of fracture lifetime to stress and temperature has been investigated for two low carbon manganese steels in air and H 2S, The influence of hydrogen on the fracture activation energy is studied. The results show that hydrogen reduces the fracture activation energy by 74%, that is, atomic binding force decreases.