Effect of manganese on grain refinement of Mg-Al based alloys

被引：120

作者：

Cao, P

Qian, M

StJohn, DH

机构：

[1] Univ Waikato, Dept Mat & Proc Engn, Hamilton, New Zealand

[2] Brunel Univ, BCAST, Uxbridge UB8 3PH, Middx, England

[3] Univ Queensland, Sch Engn, CAST, CRC, St Lucia, Qld 4072, Australia

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 11期

关键词：

magnesium alloys; grain refining; manganese; splatter; AlMn intermetallics;

D O I：

10.1016/j.scriptamat.2006.02.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Manganese is a grain refiner for high purity Mg-3%Al, Mg-6%Al, Mg-9%Al, and commercial AZ31 (Mg-3%Al-1%Zn) alloys when introduced in the form of an Al-60%Mn master alloy splatter but the use of pure Mn flakes and ALTAB (TM) Mn75 tablets shows no grain refinement. Long time holding of the melt at 730 degrees C leads to an increase in grain size. The mechanism is attributed to the presence of all epsilon-AlMn phase (hexagonal close-packed) in the master alloy splatter. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1853 / 1858

页数：6

共 23 条

[1]

BYUN JY, 2003, MAGNESIUM ALLOYS THE, P713

[2] The effect of manganese on the grain size of commercial AZ31 alloy [J].