STRESS CORROSION CRACKING AND EXFOLIATION CORROSION RESISTANCE OF Al-Mg ALLOY WITH ADDITION OF SCANDIUM

J Chin Soc Corr Pro

2005, Vol. 25

Issue (4): 218-221 DOI:

Research Report

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STRESS CORROSION CRACKING AND EXFOLIATION CORROSION RESISTANCE OF Al-Mg ALLOY WITH ADDITION OF SCANDIUM

Yue Wang;Zhenghong Wang;Zilai Wu;Haifeng Zhang

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Abstract The stress corrosion cracking and exfoliation corrosion resistance of Al-Mg alloy with high level of Mg and trace Sc addition were studied by means of such methods as stress corrosion cracking and exfoliation corrosion test of Al-Mg alloys in GJB1742-1993.Their microstructures were observed by using optical microscope and transmission electron microscope (TEM).The results showed that Al-Mg alloy with trace Sc addition has good stress corrosion cracking and exfoliation corrosion resistance,and a homogeneous,dispersed distribution of β-phase (Mg5Al8,Mg2Al3) in microstructures.The discontinuous precipitation of β-phase in grain boundaries therefore highly improved corrosion resistance of the alloy.

Key words: scandium aluminum alloy stress corrosion cracking exfoliation corrosion

Received: 26 March 2004

ZTFLH:

TG146.2

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	Zilai Wu
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Yue Wang; Zhenghong Wang; Zilai Wu; Haifeng Zhang. STRESS CORROSION CRACKING AND EXFOLIATION CORROSION RESISTANCE OF Al-Mg ALLOY WITH ADDITION OF SCANDIUM. J Chin Soc Corr Pro, 2005, 25(4): 218-221 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2005/V25/I4/218

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