STRESS CORROSION CRACKING AND MARTENSITE TRANSFORMATION OF TYPE 304 AUSTENITIC STAINLESS STEEL IN ACTIVE STATE

J Chin Soc Corr Pro

1994, Vol. 14

Issue (4): 277-282 DOI:

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STRESS CORROSION CRACKING AND MARTENSITE TRANSFORMATION OF TYPE 304 AUSTENITIC STAINLESS STEEL IN ACTIVE STATE

Fang Zhi; Wu Yinshun; Cao Bet; Zhu Rizhang(Beijing University of Science and Technolony)

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Abstract Studies were conducted on the stress corrosion craCking of type 304 austenitic stainless steel in acidic chloride solutions at ambient temperature by SSRT technique.Martensite etching technique and TEM were used to detect the presence of martensite phase and to relate stress corrosion craCking withthe martensite formation.The obserwtions showed that the deformation induced martensite promoted not only the initiation of stress corrosion cracks but also subsequent propagation of the cracks through martensite phase by its selective corrosion.The possible mechanism of crack propagation through the martensite phase was discussed according to the results of electrochemical measurements.

Key words: stainless steel;Stress corrosion cracking; Deformation induced martensite;Acidic chloride solution

Received: 25 August 1994

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Fang Zhi; Wu Yinshun; Cao Bet; Zhu Rizhang(Beijing University of Science and Technolony). STRESS CORROSION CRACKING AND MARTENSITE TRANSFORMATION OF TYPE 304 AUSTENITIC STAINLESS STEEL IN ACTIVE STATE. J Chin Soc Corr Pro, 1994, 14(4): 277-282.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1994/V14/I4/277

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