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Title: Microstructural evolution under low shear rates during Rheo processing of LM25 alloy
Authors: Satya, SJ
Kumar, V
Barekar, NS
Biswas, K
Dhindaw, BK
Keywords: Convection;Microstructure;Semi solid;Shear stress
Issue Date: 2012
Publisher: ASM International
Citation: Journal of Materials Engineering and Performance, 21(11), 2283-2289, 2012
Abstract: Microstructural features of LM25 alloy processed by two different routes: (1) conventional casting, and(2)shear casting based on inclined heated surface are studied. The microstructures of the primary phase for the shear-cast samples show rosette or ellipsoidal morphologies. Heat transfer of contacting melt with the inclined tube surface and shear stress exerted on the layers of the melt as result of gravitational force are crucial parameters for the microstructural evolution. Compared to those produced by conventional casting, shear-cast samples have a much improved tensile strength and ductility due to globular microstructure.
Description: © ASM International
ISSN: 1059-9495
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Brunel Centre for Advanced Solidification Technology (BCAST)

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