Effect of Strontium on Microstructure and Mechanical Properties of Semi-Solid A356 Al Alloy

Atchara Sangchan; Thawatchai Plookphol; Jessada Wannasin; Sirikul Wisutmethangoon

doi:10.4028/www.scientific.net/AMR.893.353

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 893Effect of Strontium on Microstructure and...

Effect of Strontium on Microstructure and Mechanical Properties of Semi-Solid A356 Al Alloy

Abstract:

Effect of strontium (Sr) addition on the microstructure and the mechanical properties of semi-solid A356 aluminum alloy produced by GISS process were investigated in this study. Strontium addition resulted in both grain refinement and modification of eutectic Si. The maximum average ultimate tensile strength and elongation of 291.06 MPa and 17.31%, respectively, were obtained from the T6 heat-treated specimen containing 0.08wt%Sr. The excessive addition of strontium (0.2wt%Sr), however, seemed to deteriorate the mechanical properties of the alloy as a result of the Al₂Si₂Sr particle formation.

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Periodical:

Advanced Materials Research (Volume 893)

Pages:

353-356

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.893.353

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Online since:

February 2014

Authors:

Atchara Sangchan, Thawatchai Plookphol, Jessada Wannasin, Sirikul Wisutmethangoon*

Keywords:

A356 Aluminum Alloy, Eutectic Modification, Gas Induce Semi-Solid (GISS), Strontium, T6 Treatment

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