| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 11003850 | Engineering Failure Analysis | 2018 | 25 Pages |
Abstract
The hydrogen influence was evaluated (A) for laboratory conditions with hydrogen concentrations larger than in service, and (B) at substantial loading rates to simulate a crash. Hydrogen in the studied laboratory conditions caused minimal influence for 980DP and 1200DP, and some influence for 980DP-650YS, 980DP-700YS, 980QP and 950TW. Simulated crash situations caused some influence for 980DP, 980QP and 950TW; their properties quickly reverted after the end of hydrogen charging. Two new mechanisms are proposed: (i) hydrogen enhanced macroscopic plasticity (HEMP) decreasing the yield stress, and (ii) hydrogen assisted micro-fracture (HAM) decreasing ductility at fracture at the ultimate tensile strength.
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Authors
Qinglong Liu, Qingjun Zhou, Jeffrey Venezuela, Mingxing Zhang, Andrej Atrens,