Effects of Spinning on Microstructure and Mechanical Properties of A356 Alloy

Abstract:

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The tube-shaped parts of A356 alloy were deformed from 0% to 83% by spinning process. The microstructure and mechanical properties of A356 alloy were discussed. The results showed that as the wall thickness reduction increases, the dendrite cells of cast alloy are lengthened gradually and the average Secondary Dendrite Arm Spacing (SDAS) is reduced from 37.2μm to 23μm and eutectic silicon particles are distributed orderly along the spinning direction. The coarse acicular β-Al5FeSi is broken into many sections, and its length is reduced from 37.5μm to 12.5μm in the cross-section. The tensile strength and elongation exhibit a strong dependence upon the variation in wall thickness, with a parabolic relationship. The tensile fractured surface of parts with deformation ratio above 35% exhibits many equiaxial dimples, with intergranular ductile fracture mode.

Info:

Periodical:

Advanced Materials Research (Volumes 189-193)

Edited by:

Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang

Pages:

4014-4017

DOI:

10.4028/www.scientific.net/AMR.189-193.4014

Citation:

W. M. Zhao et al., "Effects of Spinning on Microstructure and Mechanical Properties of A356 Alloy", Advanced Materials Research, Vols. 189-193, pp. 4014-4017, 2011

Online since:

February 2011

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Price:

$35.00

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