材料期刊网

In this paper, hydrogen behaviour in high dislocation material during plastic deformation was studied by means of SIMS. Experimental results show that hydrogen release rate increases with the increase of stress during elastic deformation stage; the hydrogen release rate increases dramatically at the very beginning of plastic deformation, and reaches the maximum in the vicinity of yield point, then it decreases with further increases of strain. The calculated hydrogen diffusivity is 10(-13) cm2/s, which is 3 to 4 orders of magnitude lower than that of undeformed ones. Hydrogen egress in high vacuum was also discussed.