基于多尺度力学实验的氢脆现象的最新研究进展

兰亮云, 孔祥伟, 邱春林, 杜林秀

A Review of Recent Advance on Hydrogen Embrittlement Phenomenon Based on Multiscale Mechanical Experiments

LAN Liangyun, KONG Xiangwei, QIU Chunlin, DU Linxiu

图3 有/无氢条件下纯Al中位错形态及启动应力的实验和模拟结果[107] (a) morphology of dislocation at the valley stress of 27 MPa and peak stress of 250 MPa when the number of cycles (N) is 659 cyc without hydrogen (b) morphology of dislocation when the number of cycles is from 789 cyc to 917 cyc (c) the shear stress-strain curves of different systems (The inset shows the dependence of critical shear stress (τc) on the concentration of hydrogen and hydrogen-vacancy (VaH) complexes)

Fig.3 Experimental results (a, b) and atomistic simulation (c) of dislocation morphology and required stress for dislocation mobility in pure Al with or without hydrogen environment[107]