2005•Unpublished venueRequires access

Effects of Y on Microstructure and Mechanical Properties of AZ91 Magnesium Alloy

Jinfeng Li, Haoran Geng

Abstract

The effects of yttrium on the microstructure and mechanical properties of AZ91 magnesium alloy were studied in this paper.The experimental results show that magnesium alloy (Mg-7.5Al-0.7Zn-0.15Mn-xY) organization is composed mainly of α(Mg) matrix,β(Mg_(17)Al_(12)) phase and λ(Al_2Y) phase.The Y with fixed quantity will improve the microstructure of the alloy clearly,thus effectively increase the mechanical properties in the room temperature and high temperature.But excessive Y will make the alloy's microstructure course organization thick,and decrease the mechanical properties of the alloy.

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Key concepts: Microstructure, Alloy, Materials science, Metallurgy, Yttrium, Magnesium alloy, Magnesium, Phase (matter)