Ageing Characteristics of Equal Channel Angular Pressed Al-Mg-Si Alloy

Abstract:

This study investigated the effect of severe plastic deformation (SPD) and artificial ageing treatment on mechanical properties of cast Al-Mg-Si alloy. 6061-T6 aluminum alloy was remelted and casted into a rod of 13mm in diameter and 60mm in length. The rod samples were then subjected to equal channel angular pressing (ECAP) for SPD process, up to 2 passes, through Bc route. Cast and ECAPed samples were solution heat treated at 530 °C, quenched in water and held at 180 °C at various ageing time to determine the effect of artificial ageing. Cast alloy consisted of α phase grains that were surrounded by Mg₂Si particles locating at the grain boundaries. The hardness increased with accumulative applied strain by 2-pass ECAP process with the value of 99.4 Hv. For heat treated samples, maximum hardness was achieved after 5-hour ageing.

• Periodical: Advanced Materials Research (Volume 858)
• Pages: 3-6
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.858.3
• Online since: November 2013
• Authors: Soon Vern Yee, Zuhailawati Hussain*, Abu Seman Anasyida, Muhammad Syukron, Indra Putra Almanar
• Keywords: Ageing Treatment, Equal-Channel Angular Pressing (ECAP), Severe Plastic Deformation (SPD)

References

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