Effect of Copper Addition and Artificial Ageingon Mechanical Behaviour of Al-6061 Alloy

The work has been done for comparative study of mechanical behavior of age hardened and non-heat treated Al6061-Copper alloy. Four compositions of Al6061 with varying percentage of copper 2.9 %, 3.8 %, 4.5 % and 5.3 % has been die casted. Strontium and titanium have been added for grain refinement....

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Published inMaterials today : proceedings Vol. 18; pp. 2656 - 2661
Main Authors Kumar Saxena, Ankit, Kumar Chaubey, Sujeet, Bhardwaj, Vivek, Kumar Pandit, Arvinda
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2019
Subjects
Aluminum
Artificial ageing
Characterization
Copper
Characterization
Aluminum
Artificial ageing
Copper
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Summary:The work has been done for comparative study of mechanical behavior of age hardened and non-heat treated Al6061-Copper alloy. Four compositions of Al6061 with varying percentage of copper 2.9 %, 3.8 %, 4.5 % and 5.3 % has been die casted. Strontium and titanium have been added for grain refinement. For Each composition two samples have been casted out of which one subjected to age hardening and other kept non heat treated. It has been found that tensile strength decreased from 2.9 wt% to 5.3 wt% copper for heat treated specimens. Maximum strength has been found for age hardened sample with 2.9 % of copper, which was 340 MPa with 3.1% elongation. This high value of strength of age hardened sample with 2.9 wt% has been found due to formation of precipitate of Al2Cu over grain boundaries hindering the movement of dislocation.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2019.07.126