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| THE EFFECTS OF MICROSTRUCTURE AND INCLUSION ON SULFIDE STRESS CORROSION CRACKING OF 12Cr2AlMoV STEEL |
| Zheng Wenlong Su Limin Zhu Guopei (Shanghai Research Institute of Materials) Chengxiu Cheng Minggang (Shanghai Steel Works No.3) |
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Abstract The sulfide stress corrosion cracking(SSCC) resistance of 12Cr2AlMoV low alloy steels with different microstructure and quantity of inclusions was investigated by means of electrochemical hydrogen permeation technique and constant load SSCC test, etc. Experimental results showed that the resistance of the steel to SSCC increased with increase of tempering temperature. The time to fracture, t_f, for normallzed and tempered steel was longer than that of quenched and tempered one, although the heating temperature were identical, For 12Cr2AlMoV steel, the resistance to SSCC was mainly dependent upon themicrostxucture of the steels. The microstructure was closely related to the diffusion coefficient of hydrogen in the steel. The more quantity of sulfur and inclusion in the steel, the lower the resistance of the steel to SSCC . It was found that besides mangness sulphide, other kinds of inclusion would also cause hydrogen induced eracking(HIC)and SSCC.
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Received: 25 August 1987
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Cite this article:
Zheng Wenlong Su Limin Zhu Guopei (Shanghai Research Institute of Materials) Chengxiu Cheng Minggang (Shanghai Steel Works No.3). THE EFFECTS OF MICROSTRUCTURE AND INCLUSION ON SULFIDE STRESS CORROSION CRACKING OF 12Cr2AlMoV STEEL. J Chin Soc Corr Pro, 1987, 7(4): 265-273.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1987/V7/I4/265
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