Microstructure and mechanical properties of Al-10Si alloy modifi ed with Al-5Ti

*Ya-ling Liu; Chang-jun Wu; Hao Tu

doi:10.1007/s41230-018-8034-1

China Foundry (Nov 2018)

Microstructure and mechanical properties of Al-10Si alloy modifi ed with Al-5Ti

*Ya-ling Liu,
Chang-jun Wu,
Hao Tu

Affiliations

*Ya-ling Liu: 1. Jiangsu Key Laboratory of Material Surface Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 2. National Experimental Teaching Demonstration Center of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 3. Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Chang-jun Wu: 1. Jiangsu Key Laboratory of Material Surface Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 2. National Experimental Teaching Demonstration Center of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 3. Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Hao Tu: 1. Jiangsu Key Laboratory of Material Surface Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 2. National Experimental Teaching Demonstration Center of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 3. Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China

DOI: https://doi.org/10.1007/s41230-018-8034-1
Journal volume & issue: Vol. 15, no. 6
pp. 405 – 410

Abstract

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The microstructure, fracture morphology and mechanical properties of Al-10Si alloy modifi ed with Al-5Ti were analyzed and tested by optical microscopy, scanning electron microscopy, and universal electronic testing machine. Compared with unmodifi ed Al-10Si alloy, the area fraction of α-Al phase in Al-10Si alloy modifi ed at 740 °C increased fi rst and then decreased with the increase of added amounts of Al-5Ti, and reached the maximum when the added amount of Al-5Ti was 0.5wt.%. When the modifi cation temperature increased from 700 to 740 °C with Al-5Ti being fi xed at 0.5wt.%, α-Al dendrites were refi ned obviously and the area fraction remarkably increased. Compared with unmodifi ed Al-10Si alloy, the ultimate tensile strength and elongation of the alloy modifi ed at 740 °C with 0.5wt.% Al-5Ti increased by 9% and 49%, respectively. The fracture surface of modifi ed alloy predominantly exhibited ductile fracture.

Published in China Foundry

ISSN: 1672-6421 (Print)
Publisher: Foundry Journal Agency
Country of publisher: China
LCC subjects: Technology: Manufactures
Website: http://www.foundryworld.com/

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