Effect of magnesium carbonate on microstructure and rolling behaviors of AZ31 alloy

被引：17

作者：

Wang, Ling ^{[1
,2
]}

Kim, Young Min ^{[1
]}

Lee, JeHyun ^{[2
]}

You, Bong Sun ^{[1
]}

机构：

[1] Korea Inst Mat Sci, Light Met Res Grp, Chang Won 641831, South Korea

[2] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, South Korea

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 03期

关键词：

Magnesium alloy; Magnesium carbonate; Rolling behavior; Twinning; Dynamic recrystallization; GRAIN-REFINEMENT; MECHANICAL-PROPERTIES; CAST ALLOY; MG; DEFORMATION; TEXTURE; RECRYSTALLIZATION; EFFICIENCY; MANGANESE;

D O I：

10.1016/j.msea.2010.10.053

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present study aims at investigating grain refinement and rolling behavior of a magnesium carbonate (MgCO3) added AZ31 alloy. MgO particles produced by decomposition of MgCO3 in an AZ31 melt act as effective heterogeneous nuclei, and decrease the grain size of the ingot from 310 to 117 mu m. Grain refinement alters the hot deformation mechanism of AZ31 alloy from TDRX-dominance to CDRX-dominance. The twinned regions provide easy crack propagation routes and thus deteriorate workability. As a result, workability in hot rolling especially up to the intermediate stage is improved. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1485 / 1490

页数：6

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