Research on microstructure in semisolid A356-Sc alloy

Author

Liu, Xiao-mei ; Liu, Zheng ; Hu, Yong-mei

Author_Institution

Fac. of Mech. & Electron. Eng., Jiangxi Univ. of Sci. & Technol., Ganzhou, China

fYear

2011

fDate

15-17 July 2011

Firstpage

7604

Lastpage

7607

Abstract

Semisolid A356-Sc alloy slurry is prepared by low superheat pouring. The effects of Sc on microstructure in semisolid A356 alloy are researched. The results indicate that the slurry with particle- and rosette-like α-Al grains can be prepared by low superheat pouring. The size and morphology of the α-Al grain in the slurry are markedly improved by Sc. The refining mechanism of Sc on the morphology and size of the α-Al grain in semisolid A356 alloy is delved. The eutectic reaction of Al-Sc binary alloy provides the effective nuclei for formation of the α-Al grains in semisolid A356 alloy.

Keywords

aluminium alloys; crystal morphology; eutectic structure; grain refinement; grain size; scandium alloys; silicon alloys; slurries; eutectic reaction; grain morphology; grain refinement; grain size; low superheat pouring; microstructure; semisolid A356-Sc alloy slurry; Heating; Isothermal processes; Metals; Microstructure; Morphology; Refining; Slurries; A356 alloy; Sc; eutectic reaction; low superheat pouring; semisolid;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5988810

Filename

5988810