| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7965136 | Journal of Nuclear Materials | 2015 | 5 Pages |
Abstract
The role of pre-strain on hydrogen embrittlement susceptibility of Indian Reduced Activation Ferritic Martensitic Steel was investigated using constant nominal strain-rate tension test. The samples were pre-strained to different levels of plastic strain and their mechanical behavior and mode of fracture under the influence of hydrogen was studied. The effect of plastic pre-strain in the range of 0.5-2% on the ductility of the samples was prominent. Compared to samples without any pre-straining, effect of hydrogen was more pronounced on pre-strained samples. Prior deformation reduced the material ductility under the influence of hydrogen. Up to 35% reduction in the total strain was observed under the influence of hydrogen in pre-strained samples. Hydrogen charging resulted in increased occurrence of brittle zones on the fracture surface. Hydrogen Enhanced Decohesion (HEDE) was found to be the dominant mechanism of fracture.
Keywords
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Nuclear Energy and Engineering
Authors
Sagar Sonak, Abhishek Tiwari, Uttam Jain, Nachiket Keskar, Sanjay Kumar, Ram N. Singh, Gautam K. Dey,