Investigation on mechanical properties of aluminium 8090 alloy through room temperature rolling
Authors
-
,IN
Harsha S -
,INDasharath S M
DOI:
https://doi.org/10.18311/jmmf/2021/30120Keywords:
Tensile test, Vickers test, aluminium lithium alloy.Abstract
Al-Li alloys are attractive for military and aerospace applications because their properties are superior to those of conventional Al alloys. Their exceptional properties are attributed to the addition of Li into the Al matrix. To develop an improved approach in achieving an excellent combination of high strength and ductility, the solutionized Al-Cu-Li plates were subjected to rolling at room temperatures to a reduction of 60%, 75% and amp; 85%. Rolling at room temperature produces a high density of dislocations because of the suppression of dynamic recovery, such high density of T1 precipitates enable effective dislocation pinning, leading to an increase in strength and ductility. The tensile properties of the age hardening Al 8090 alloy subjected to room temperature rolling (RTR) were investigated. The rolled and aged alloys were analyzed by using TEM, Vickers hardness analysis and tensile test as per ASTM standards. The strength and ductility of Al 8090 alloy of rolled samples are compared to unrolled samples.
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Accepted 2022-04-28
Published 2022-04-28
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