TWO TYPES OF HYDROGEN DIFFUSION IN LOW-CARBON STEEL

Acta Metall Sin

1996, Vol. 32

Issue (9): 933-937 DOI:

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TWO TYPES OF HYDROGEN DIFFUSION IN LOW-CARBON STEEL

YU Qizhan; LIU Shuhua (Dalian Railway Institute;Dalian 116028)SUN Zhouming (Qishuyan Locomotive and Rolling Stock Technology Research Institute; Changzhou 213011)

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YU Qizhan; LIU Shuhua (Dalian Railway Institute;Dalian 116028)SUN Zhouming (Qishuyan Locomotive and Rolling Stock Technology Research Institute; Changzhou 213011). TWO TYPES OF HYDROGEN DIFFUSION IN LOW-CARBON STEEL. Acta Metall Sin, 1996, 32(9): 933-937.

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Abstract Solution and escape of hydrogen in low-carbon steel have been studied by means of electrolysis-cathode-hydrogenating under plastic deformation and under tensile stress. Some empirical formulas of diffusivity were obtained by the regressive method. The results revealed that the diffusivity during solution is greater than that during escape and the larger the plastic deformation or tensile stress, the larger the solution diffusivity and the escape activation energy.

Key words: low-carbon steel trap of hydrogen diffusivity activation energy of diffusion

Received: 18 September 1996

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1褚武扬．氢损伤和滞后断裂．北京:冶金工业出版社,1988:382张文钺．见:第五届全国焊接学术会议论文集(Ⅱ),哈尔滨,19863秦伯雄．见:第五届全国焊接学术会议论文集(Ⅱ),哈尔滨,19864下田秀夫．溶接学会志,1966;12:315菊田米男,荒木孝雄．溶接学会志,1977;1:266ChooWY．MetallTrans,1983;14A:12997SmialowskiM．HyrogeninSteel．Oxford:Pergamon,19628大西,菊田米男,溶接学会志,1967;5:679菊田米男,荒木孝雄．溶接学会志,1977;5:26

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