Distribution of microstructure and cooling rate in Al-Al2Cu functionally graded materials fabricated by a centrifugal method

被引：35
|
作者：
Watanabe, Yoshimi [1 ]
Hattori, Yuko [1 ]
Sato, Hisashi [1 ]
机构：
[1] Nagoya Inst Technol, Grad Sch Engn, Dept Engn Phys Elect & Mech, Showa Ku, Nagoya, Aichi 4668555, Japan
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 221卷
关键词：
Functionally graded materials (FGMs); Microstructures; Casting; Cooling rate; IN-SITU METHOD; TIN EUTECTIC ALLOY; GRADIENT; PARTICLE; LAMELLAR; GROWTH;
D O I：
10.1016/j.jmatprotec.2015.01.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of processing parameters, such as type of caster, casting atmosphere and G number, on distributions of microstructure and cooling rate in Al-Al2Cu functionally graded materials (FGMs) by centrifugal casting are investigated. The Al-Al2Cu FGMs samples fabricated under vacuum have relatively steeper distribution profiles of the Al2Cu volume fraction rather than samples fabricated under gas atmosphere. Moreover, gradient of the Al2Cu volume fraction distribution in the FGMs sample becomes larger with increasing G number. As well as the Al2Cu volume fraction, lamella spacing in Al-Al2Cu eutectic lamella structure is influenced by these processing parameters. These microstructural distributions in the Al-Al2Cu FGMs samples can be explained by cooling rate distribution in the samples during centrifugal casting. Using the Al-Al2Cu eutectic lamella structure and the Al2Cu volume fraction, the cooling rate distributions in the FGMs samples are roughly estimated. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：197 / 204
页数：8
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