Title :
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
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;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988810
