Effect of mg additions and thermal treatment on corrosion properties of Al-Li-Cu-base alloys

被引：0
|
作者：
Semenov, A.M. [1 ]
机构：
[1] All-Russia Inst. of Light Alloys, Moscow, 121596, Russia
来源：
Zashchita Metallov | 2001年 / 37卷 / 02期
关键词：
Additives - Alloying elements - Copper - Corrosion resistance - Heat treatment - Lithium - Magnesium printing plates - Stress corrosion cracking;
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摘要：
An investigation on the corrosion and electrochemical behavior of experimental and industrial semifinished items of Al-Li-Cu-base alloys offers possibilities of increasing the corrosion resistance of aluminum-lithium alloys by alloying and an nontraditional thermal treatment. Magnesium added in a concentration of no more than 0.4% leads to a improvement of the corrosion and mechanical characteristics of the alloy, whereas increasing its concentration up to 1.0% deteriorates all the corrosion characteristics. An investigation of the effect of the cathodic additions of Zr, Mn, and Mn + Cr shows that the corrosion properties are non-changed by substitution of Mn or Mn + Cr for Zr. The resistance to general corrosion, exfoliation corrosion, and corrosion cracking is enhanced by a nontraditional artificial aging.
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页码：146 / 152
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