SCC OF SENSITIZED 1Cr18Ni9Ti STAINLESS STEEL IN H_2S_xO_6 SOLUTION IN REFINERY

J Chin Soc Corr Pro

1990, Vol. 10

Issue (3): 271-274 DOI:

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SCC OF SENSITIZED 1Cr18Ni9Ti STAINLESS STEEL IN H_2S_xO_6 SOLUTION IN REFINERY

Duan Xuezhang Xu Suzhen and Li Tiefan (Institute of Corrosion and Protection of Metals;Academia Sinica)

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Abstract Stress Corrosion Cracking(SCC)susceptibility of sensitized 1 Cr18Ni9Ti austenitic steel was investigated by measuring potgntiody- namie polarization curves(sean rates:10 mV/min and 20 mV/s)and using the slow strain rate test(SSRT)in the polythionic acid solution formed in the petroleum refinery. The results showed that there was a critical potential range between +60 and +1200 mV(SCE)in H_2S_xO_6 solution in refinery for stress corrosion cracking of sensitized 1 Cr18Ni9Ti stainless steel to occur. The metallographic studies of the fractured surface by SEM revealed intergranular and quasi-cleavage fracture in the critical potential zone.

Received: 25 June 1990

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Duan Xuezhang Xu Suzhen and Li Tiefan (Institute of Corrosion and Protection of Metals;Academia Sinica). SCC OF SENSITIZED 1Cr18Ni9Ti STAINLESS STEEL IN H_2S_xO_6 SOLUTION IN REFINERY. J Chin Soc Corr Pro, 1990, 10(3): 271-274.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1990/V10/I3/271

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