Effect of Ce addition on microstructures and mechanical properties of A380 aluminum alloy prepared by squeeze-casting

被引：23

作者：

Ao, Xiao-hui ^{[1
]}

Xing, Shu-ming ^{[1
]}

Yu, Bai-shui ^{[1
]}

Han, Qing-you ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

[2] Purdue Univ, Dept Mech Engn, W Lafayette, IN 47907 USA

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2018年 / 25卷 / 05期

关键词：

cerium; eutectic Si; Fe-rich phases; squeeze-casting; mechanical properties; CONTAINING INTERMETALLIC COMPOUNDS; FE-RICH INTERMETALLICS; TENSILE PROPERTIES; IRON; BETA-AL5FESI; PHASES; CERIUM; NUCLEATION; PHOSPHORUS; BEHAVIOR;

D O I：

10.1007/s12613-018-1602-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of cerium (Ce) addition on the eutectic Si, beta-Al5FeSi phase, and the tensile properties of A380 alloy specimens prepared by squeeze-casting were studied by optical microscopy (OM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The experimental results showed that Ce more effectively modified the eutectic Si and refined the beta-Al5FeSi. The refinement effect significantly increased under a specific pressure of 100 MPa with the addition of Ce from 0.1wt% to 0.9wt%. In contrast, the average length and the aspect ratio of the eutectic Si and beta-Al5FeSi exhibited their optimal values when the content of the added Ce was greater than 0.5wt%. Needle-like Al8Cu4Ce was precipitated with the addition of excessive Ce; hence, the mechanical properties of A380 gradually decreased with increasing Ce content in the range from 0.3wt% to 0.9wt%.

引用

页码：554 / 563

页数：10

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