Microstructural Evolution of AlMg4.5 and High-Mg Containing AlMg10 Alloys during Solidification and Homogenization Treatment

Ji Young Lee; Bong Hwan Kim; Seong Ho Ha; Shae K. Kim; Young Ok Yoon; Soong Keun Hyun

doi:10.4028/www.scientific.net/AMM.864.106

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 864Microstructural Evolution of AlMg4.5 and High-Mg...

Microstructural Evolution of AlMg4.5 and High-Mg Containing AlMg10 Alloys during Solidification and Homogenization Treatment

Abstract:

The microstructural evolution of AlMg4.5 and high-Mg containing AlMg10 alloys were investigated during homogenization by metallurgical analyses and micro-Vickers hardness test. It was concluded that the increased amount of Mg solute in AlMg10 alloy leads to formations of both super-saturated Al-Mg solid solution and increased eutectic Mg₂Al₃ phase in interdentrictic region at solidified state. The hardnesses of both AlMg4.5 and AlMg10 alloys increased after homogenization proportionally to the temperature. The resultant improved hardness of AlMg10 alloy after homogenization is higher than that of AlMg4.5 alloy and mainly contributed to additional solid-solution hardening by Mg solute dissolved from eutectic Mg₂Al₃ phase.

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Applied Mechanics and Materials (Volume 864)

Pages:

106-110

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.864.106

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Online since:

April 2017

Authors:

Ji Young Lee, Bong Hwan Kim*, Seong Ho Ha, Shae K. Kim, Young Ok Yoon, Soong Keun Hyun

Keywords:

Al-Mg Alloy, Homogenization, Mechanical Properties, Microstructure, Solidification

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