Effect of Ca and Gd combined addition on ignition temperature and oxidation resistance of AZ80

被引：24
作者：
Cheng, Chunlong [1 ]
Lan, Qing [1 ]
Liao, Qiyu [1 ]
Le, Qichi [1 ]
Li, Xiaoqiang [1 ]
Chen, Xingrui [1 ]
Cui, Jianzhong [1 ]
机构：
[1] Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110819, Liaoning, Peoples R China
来源：
CORROSION SCIENCE | 2019年 / 160卷
关键词：
Magnesium; Oxidation resistance; Ignition temperature; Alloying; AZ91D MAGNESIUM ALLOY; AZ31B ALLOY; MG; BEHAVIOR; ND; AL; POINT; MICROSTRUCTURE; MECHANISMS; REDUCTION;
D O I：
10.1016/j.corsci.2019.108176
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Ca and Gd on microstructures, oxidation behaviors, ignition and oxidation resistance improvement of AZ80-0.8Ca-xGd (x = 0, 0.2, 0.5 and 0.7 wt.%) alloys was investigated. The results show that alloy second phases transform from chain-shaped beta-Mg17Al12 + Al2Ca to scattering dendritic Al2Ca and further to island-like beta-Mg17Al12 and crumby structural Al2Ca + Al2Gd with Gd content increasing gradually. The category and distribution pattern of second phase play an important role in determining oxidation resistance of alloys. Alloy with scattering dendritic Al2Ca phase provide more perfect ignition and oxidation resistance than that of the others.
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页数：11
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