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| EFFECT OF HYDROGEN ON MECHANICAL PROPERTIES FOR 2(1/4)Cr-1Mo STEEL |
| ZHONG Manying |
| School of Mechanical and Electronic Engineering, China Institute of Metrology, Hangzhou 310018 |
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Abstract The effect of hydrogen on the mechanical properties for 2(1/4)Cr-1Mo steel for hydrogenation reactor wall-materials was investigated at the simulated service condition of hydrogenation reactor. The crack propagation rate da/dN and the threshold value Δth at low frequency fatigue were calculated. Hydrogen distribution of crack tip were measured. The results showed that hydrogen content related to stress field. The higher the stress, the higher the hydrogen content. The residual cycle life for hydrogenation reactor was calculated, supposing surface crack exists in reactor.
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Received: 06 April 2010
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Corresponding Authors:
ZHONG Manying
E-mail: xuzg2002@hzcnc.com
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