| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.13 ( September 1985 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Hydrogen Attack in Cr-Mo Steels and Disbonding or Austenitic Stainless Weld Overlay Takuichi Imanaka, Jun-ichi Shimomura, Shozaburo Nakano, Koichi Yasuda |
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Synopsis : The characteristics of a hydrogen attach on 2 1/4 Cr-1 Mo steel were studied. Resistance to the hydrogen attack increases drastically with a slight increment of increment of chromium content of around 2.25 wt%. Addition of vanadium up to 0.15 wt% and lowering silicon content to a level less than 0.15 wt% in 2 1/4 Cr-1 Mo steels improve dramatically the resistance to hydrogen attack. These improvements in the hydrogen attack can be interpreted tentatively in terms of variation in the chemistry and thermodynamically properties of carbides. Susceptibility to disbanding is generally improved by a decrease in silicon content and an increase in Β-ferrite of weld metal. |
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