3th WCSET-2014 at Nepal

 

Mechanical Engineering / Sustainable Energy Session:

Title:           Effect of Artificial Aging on Strength and Wear Behavior of Solutionized Aluminium 6061 Alloy
Authors:       Gowrishankar M. C., Shravan, Rakesh, Jayashree P.K., Achutha Kini, S. S. Sharma
Abstract:     The strength of Al6061 alloy can be improved by precipitation hardening, during the precipitation of metastable phases formed by supersaturated solid solution. The experimental study is focused on artificial ageing of solutionized Al6061 alloy at 100o, 150o and 200o C. The peak hardness is obtained at different aging temperature by plotting hardness v/s time. The peak aging duration is observed to vary between 3 to 10 hours depending on aging temperature. As the aging temperature decreases the precipitation of secondary solute rich phases takes place in the more number of intermediate stages. The intermediate phases strain the lattice during their precipitation to enhance the mechanical properties, so better mechanical property is observed at lower aging temperature. In this paper, mechanical properties such as microhardness, tensile strength, and wear resistance have been studied to determine the effect of artificial ageing on Al6061 alloy. However, under identical heat treatment conditions, the precipitation hardened alloy exhibited better mechanical properties in comparison with as-cast alloy.

Keywords:    Al6061 alloy; Artificial aging; Micro hardness; Tensile strength; Wear strength
Pages:          388-393

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