Corrosion resistance of Al–Li alloys
作者:
SheppardT.,
ParsonN. C.,
期刊:
Materials Science and Technology
(Taylor Available online 1987)
卷期:
Volume 3,
issue 5
页码: 345-352
ISSN:0267-0836
年代: 1987
DOI:10.1179/mst.1987.3.5.345
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractExperiments designed to investigate the corrosion resistance of several lithium-containing aluminium alloys are described. Intergranular corrosion was investigated using the NAWL test, exfoliation corrosion using the EXCO test, and stress corrosion using the C-ring test. It was found that intergranular corrosion varied with extrusion parameters and was more severe in copper-containing alloys. Alloys containing less than 0·4% Cu were not susceptible to stress corrosion. In alloys that failed, susceptibility increased as the aging treatment was extended from the underaged to the peak aged temper and also with increasing copper content. The addition of copper to ternary Al–Mg–Li alloys also increased the exfoliation corrosion attack.MST/494
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