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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 2    April 2006

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Microstructure behavior and metal flow during continuously extending-extrusion forming of semisolid A2017 alloy
GUAN Ren-guo(管仁国), WEN Jing-lin(温景林), WANG Shun-cheng(王顺成), LIU Xiang-hua(刘相华)

School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China

Abstract:A self-designed test machine of continuously semisolid extending extrusion was made to produce the flat bar of A2017 alloy. The slurry of A2017 alloy with spherical or elliptical structures was obtained. During manufacturing semisolid A2017 alloy by the proposed process, the spherical grain was formed with the application of the large force provided by the rough roll. By controlling the casting temperature, the products of A2017 alloy with fine surfaces and rectangular transections of 14 mm×25 mm were produced. The microstructure of the product is fine with the stripped appearance. The fracture strength and elongation of the product are increased by 100 MPa and 29%, respectively.

 

Key words: A2017 alloy; semisolid alloy; slurry; extending extrusion; flat bar; microstructure

ISSN 1672-7029
CN 43-1423/U

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