ON THE MICROSTRUCTURES OF MILD STEELS AND CORROSION FATIGUE

Acta Metall Sin

1988, Vol. 24

Issue (6): 476-481 DOI:

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ON THE MICROSTRUCTURES OF MILD STEELS AND CORROSION FATIGUE

XING Zhiqiang;HUANG Shuju;SONG Yujiu; TU Mingjing Xi'an Jiaotong University

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XING Zhiqiang;HUANG Shuju;SONG Yujiu; TU Mingjing Xi'an Jiaotong University. ON THE MICROSTRUCTURES OF MILD STEELS AND CORROSION FATIGUE. Acta Metall Sin, 1988, 24(6): 476-481.

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Abstract The fatigue crack propagation behaviour of two mild steels with vari-ous microstructures in 3.5% NaCl solution or atmosphere was studied. It is revealedthat the microstructures of steel and frequency have considerable influence on thecorrosion fatigue strength. The relation between crack closure effect and electroche-mical conditions is discussed. The corrosion fatigue mechanisms, which considerthe effect of hydrogen embrittlement and anode dissolution respectively, are pro-posed. A fracture mechanism-map is worked.

Key words: corrosion fatigue fracture mechanism mild steel

Received: 18 June 1988

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1988/V24/I6/476

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