Udyavar, Mradulla S and Dwarakadasa, ES (1992) Surface depletion of lithium in medium-strength aeronautical AI-Li alloys during heat treatment. In: Journal of Materials Science Letters, 11 (8). 490 -492.
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AI alloys containing up to 2.8% lithium are being developed as a lighter substitute for currently used high-strength A1 alloys. The higher strength-to- weight ratio and higher elastic modulus of the new A1-Li alloys have led to their application in the aircraft industries. Each 1% addition of lithium to an A1 alloy decreases the density by about 3% and increases the elastic modulus (stiffness) by 6% . In practice up to 4 wt % Li can be added. The direct benefit of A1-Li alloys includes a potential 25% increase in specific strength and specific stiffncss with a consequent overall weight reduction of aircraft.
|Item Type:||Journal Article|
|Additional Information:||copyright of this article belongs to Springer Verlag.|
|Department/Centre:||Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)|
|Date Deposited:||16 Aug 2006|
|Last Modified:||19 Sep 2010 04:30|
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