Grain Refinement of AZ91D Magnesium Alloy by In-situ Al4C3 Particles

被引：2

作者：

Han, Hui ^{[1
]}

Miao, Huaming ^{[1
]}

Liu, Shengfa ^{[1
]}

Chen, Yang ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

EMERGING FOCUS ON ADVANCED MATERIALS, PTS 1 AND 2 | 2011年 / 306-307卷

关键词：

AZ91D magnesium alloy; Al4C3; grain refinement; nucleus; MG-AL ALLOYS; MASTER ALLOY; ADDITIONS;

D O I：

10.4028/www.scientific.net/AMR.306-307.429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experiments were conducted to fabricate the Al4C3 particles by powder in-situ synthesis process under argon atmosphere and examine the grain refinement of AZ91D magnesium alloy with the addition of 0.6%Al4C3(hereafter in mass fraction,%). By means of X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS), the results show the successful fabrication of Al4C3 particles. After adding 0.6%Al4C3, the average grain size of AZ91D magnesium alloy decreased from 360 mu m to 243 mu m. Based on the differential thermal analysis (DTA) results and calculations of the planar disregistry between Al4C3 and alpha-Mg, Al4C3 particles located in the central regions of magnesium grains can act as the heterogeneous nucleus of primary alpha-Mg phase.

引用

页码：429 / 432

页数：4

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