Paper Title:

Microstructure and Mechanical Behaviors of AZ91 Magnesium Alloy with Thermal Rate Treatment Technique

Periodical Advanced Materials Research (Volumes 306 - 307)
Main Theme Emerging Focus on Advanced Materials
Edited by Shiquan Liu and Min Zuo
Pages 471-474
DOI 10.4028/www.scientific.net/AMR.306-307.471
Citation Yong Zhi Zhou et al., 2011, Advanced Materials Research, 306-307, 471
Online since August, 2011
Authors Yong Zhi Zhou, Hao Ran Geng, Yu Jie Sun, Mei Li
Keywords AZ91 Magnesium Alloy, Grain Refinement, Heat Treatment
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Abstract

Microstructure and mechanical behaviors of AZ91 cast magnesium alloys with melt superheating and thermal rate treatment technique were studied. Alloy grains thicken at 820℃ and refine at 870℃ when they contains Mn element and the crucible had no coating on the internal surface. Moreover, the strengthening γ phase is more dispersive and uniform at 870℃. Thermal rate treatment significantly improved the microstructure, mechanical behaviors and casting quality of AZ91 alloy as microstructure of AZ91 alloy reserves some characteristics of the high temperature melt.