CORROSION FATIGUE OF HSLA STEELS IN SALT SPRAY

Acta Metall Sin

1989, Vol. 25

Issue (1): 150-152 DOI:

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CORROSION FATIGUE OF HSLA STEELS IN SALT SPRAY

HAO Hongqi;SONG Yujiu Xi'an Jiaotong University

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HAO Hongqi;SONG Yujiu Xi'an Jiaotong University. CORROSION FATIGUE OF HSLA STEELS IN SALT SPRAY. Acta Metall Sin, 1989, 25(1): 150-152.

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Abstract The corrosion fatigue propagation behaviours of low carbon martensitic steels20Cr2Ni4 and 20SiMnMoV have been investigated in 3.5%NaCl solution spray. The fatigue growthrates of two steels in salt spray are much higher than those in air under low △K range. A crit-ical stress intensity factor range has been observed for each steel. The crack prowth stoppagewill occure if the △K value was lower than it.

Key words: salt spray initiation period crack growth stoppage closure effect

Received: 18 January 1989

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