Nonstoichiometric precipitation in as-cast Mg-xAl-1Zn alloy

被引：7

作者：

Lee, CD

Kang, CS

Shin, KS

机构：

[1] Daewoo Motors Co, Ctr Tech, Inchon 403714, South Korea

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea

来源：

METALS AND MATERIALS INTERNATIONAL | 2000年 / 6卷 / 06期

关键词：

magnesium alloy; nonstoichiometric composition; calibration curve; precipitate;

D O I：

10.1007/BF03028090

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, the nonstoichiometric precipitation of the beta -phase in as-cast Mg-xAl-1Zn alloy was investigated from the viewpoint of solidification behavior. beta -phase (Mg17Al12) has a nonstoichiometric composition of 28-41 wt.% Al and 6-12 wt.% Zn. Moreover, the chemical composition of the precipitate in Mg-xAl-1Zn alloy locally varies depending on the Al content in the alloy and the solidification rate. However, it still maintains the same a-Mn structure as the beta -phase (Mg17Al12) in Mg-xAl alloy. Also, the slope of the calibration curve between the volume fraction of precipitate and intensity ratio (I-ppt/I-Mg) is 0.35343 and 0.31995 in Mg-xAl and Mg-xAl-1Zn alloy, respectively.

引用

页码：497 / 503

页数：7

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