INFLUNCE OF AGING TREATMENT ON STRESS CORROSION RESISTANCE OF Fv520(B) STEEL IN H2S MEDIUM

J Chin Soc Corr Pro

1999, Vol. 19

Issue (2): 120-124 DOI:

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INFLUNCE OF AGING TREATMENT ON STRESS CORROSION RESISTANCE OF Fv520(B) STEEL IN H2S MEDIUM

Furen Xiao;;

燕山大学

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Abstract The effects of aging temperature on microstructure,mechanical properties and stress corrosion resistance in H2S medium of Fv520(B) steel (0.05C,14.5Cr,5.5Ni,1.8Cu,1.70Mo,0.35Nb)have been studied by X-ray deffraction,TEM and SEM.The results show that the strength decreases with the increasing aging temperature in the rang of 470-620℃.The amount of austenite and the stress corrosion resistance increases with the increasing aging temperature,and reaches the highest level at 620℃.Aging phases begin to precipitate at 470℃,and grow with the increase of the aging temperature.The stress corrosion resistance is related to the shape of aging phases,tempering level of martensite and the amount of remaining austenite.The best mechanical properties and stress corrosion resistance can be obtained by aging at 560℃.

Key words: Fv520(B) steel aging stress corrosion

Received: 22 July 2005

Corresponding Authors: Furen Xiao

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Furen Xiao. INFLUNCE OF AGING TREATMENT ON STRESS CORROSION RESISTANCE OF Fv520(B) STEEL IN H2S MEDIUM. J Chin Soc Corr Pro, 1999, 19(2): 120-124 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1999/V19/I2/120

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