CHARACTERISTICS OF HYDROGEN PERMEATION IN GH718 ALLOY

J Chin Soc Corr Pro

1994, Vol. 14

Issue (2): 151-155 DOI:

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CHARACTERISTICS OF HYDROGEN PERMEATION IN GH718 ALLOY

Xu Jian; Sun Xiukui; Liu Qingquan;Chen Wenxiu(State Keg Laboratory of RSA; Institute of Metal Research; Chinese Academy of Sciences)

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Abstract In the present work, the hydrogen permeability and diffusivity of GH718 alloy in several conditions of heat treatment were derermined using a gaseous hydrogen permeation technique. Measurements were made over the temperature range of 210 to 430 ℃. It was shown that the dependence of hydrogen permeability and diffusivity. on temperature of GH718 alloy followed Arrhenius relationship over the experimental temperature range and that the characteristics of hydrogen permeation and diffusion were not sensitive to the forostructure variations of this alloy, namely, the pprecipitation- strengthening phases γ'and γ＂in the alley did not have a pronounced effect on the hydrogen permeation and diffusion behaviour.

Received: 25 April 1994

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Xu Jian; Sun Xiukui; Liu Qingquan;Chen Wenxiu(State Keg Laboratory of RSA; Institute of Metal Research; Chinese Academy of Sciences). CHARACTERISTICS OF HYDROGEN PERMEATION IN GH718 ALLOY. J Chin Soc Corr Pro, 1994, 14(2): 151-155.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1994/V14/I2/151

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