Microstructure and mechanical properties of Ca containing AZ91 magnesium alloys

被引：5
作者：
Choi, BH
You, BS
Yim, CD
Park, WW
Park, IM
机构：
[1] Pusan Natl Univ, Div Engn & Mat Sci, Pusan 609735, South Korea
[2] Korea Inst Machinery & Mat, Gyeongnam 641010, South Korea
[3] Inje Univ, Sch Nano Engn, Gyeongnam 621749, South Korea
来源：
PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5 | 2005年 / 475-479卷
关键词：
AZ91; alloy; calcium; grain refinement; mechanical properties;
D O I：
10.4028/www.scientific.net/MSF.475-479.2477
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of Ca addition on the microstructure and mechanical properties of AZ91 magnesium alloy have been investigated. The main changes in microstructure caused by Ca addition were the grain refinement in the as-east alloys and the formation of new Al2Ca phase along the grain boundaries. The tensile strength and elongation of the AZ91 magnesium alloy were improved by small addition of Ca due to grain refinement and replacement Of Mg17Al12 phase with new Al2Ca compound. However, when above 0.7wt.% Ca was added, mechanical properties of AZ91 magnesium alloy were decreased.
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收藏
页码：2477 / 2480
页数：4
相关论文
共 8 条
[1]   Effects of Ca and Be additions on high temperature oxidation behavior of AZ91 alloys [J].
Choi, BH ;
Park, IM ;
You, BS ;
Park, WW .
MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :639-644
[2]   Effect of Ca addition on the oxidation resistance of AZ91 magnesium alloys at elevated temperatures [J].
Choi, BH ;
You, BS ;
Park, WW ;
Huang, YB ;
Park, IM .
METALS AND MATERIALS INTERNATIONAL, 2003, 9 (04) :395-398
[3]   THE STRUCTURES AND PROPERTIES OF MG-AL-ZR AND MG-ZN-ZR ALLOYS PRODUCED BY LIQUID DYNAMIC COMPACTION [J].
LAVERNIA, EJ ;
GOMEZ, E ;
GRANT, NJ .
MATERIALS SCIENCE AND ENGINEERING, 1987, 95 :225-236
[4]   CAST MAGNESIUM ALLOYS FOR ELEVATED-TEMPERATURE APPLICATIONS [J].
LUO, A ;
PEKGULERYUZ, MO .
JOURNAL OF MATERIALS SCIENCE, 1994, 29 (20) :5259-5271
[5]  
Nelson C.E., 1948, T AFS, V56, P1
[6]   IMPROVED HEAT-RESISTANCE OF MG-AL ALLOYS BY THE CA ADDITION [J].
NINOMIYA, R ;
OJIRO, T ;
KUBOTA, K .
ACTA METALLURGICA ET MATERIALIA, 1995, 43 (02) :669-674
[7]   The effect of calcium additions on the oxidation behavior in magnesium alloys [J].
You, BS ;
Park, WW ;
Chung, IS .
SCRIPTA MATERIALIA, 2000, 42 (11) :1089-1094
[8]   The effect of calcium addition to magnesium on the microstructure and compositional changes of oxide film formed at high temperature [J].
You, BS ;
Park, WW ;
Chung, IS .
MATERIALS TRANSACTIONS, 2001, 42 (06) :1139-1141
1