Microstructure and mechanical properties evolution of 6061 aluminum alloy formed by forward thixoextrusion process

被引：24

作者：

Abolhasani, D. ^{[1
]}

Ezatpour, H. R. ^{[2
]}

Sajjadi, S. A. ^{[2
]}

Abolhasani, Q. ^{[3
]}

机构：

[1] Islamic Azad Univ, Graduated Sch Fac, Mfg Dept, Dezful Branch, Dezful, Iran

[2] Ferdowsi Univ Mashhad, Fac Engn, Dept Mat Sci & Met Engn, Mashhad, Iran

[3] KHEI, Mashhad, Iran

来源：

MATERIALS & DESIGN | 2013年 / 49卷

关键词：

Aluminum alloys; Forward thixoextrusion; Semisolid material temperature; Tool temperature;

D O I：

10.1016/j.matdes.2013.01.079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thixoforming process is a semisolid metal processing route, which involves forming of alloys in the semisolid state to near net shaped products. To investigate the effects of thixoextrusion parameters on microstructure and mechanical properties of commercial 6061 aluminum alloy, forward extrusion experiments were carried out in the semisolid state. The results showed that fine and globular microstructure can be achieved using semisolid forming. SEM micrographs and mechanical tests results showed that the tensile behavior of thixoformed specimens at billet temperatures below 620 degrees C is relatively elastic and brittle. With increasing die temperature up to 620 degrees C more elongation value and ductility were obtained in the thixoformed specimens. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：784 / 790

页数：7

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