Journal
MATERIALS LETTERS
Volume 97, Issue -, Pages 104-107Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.01.112
Keywords
Al-Si alloy; Cast; Mechanical properties; Corrosion; Mischmetal
Funding
- General Motors Company in USA
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To improve mechanical properties and particularly corrosion resistance of aluminum high pressure die castings, a new Al-Si based alloy was developed by lowering copper content and optimizing other alloying elements. In comparison with the. widely used high pressure die casting A380 and A360 alloys, the newly developed alloy exhibits an improved strength by 20% with respect to A360 and a better corrosion resistance by 45% compared with A380. The improvement in mechanical properties and corrosion resistance of the new alloy is attributed to the dramatic microstructure refinement and eutectic silicon morphology modification with much better homogeneous distribution of the second phase particles in the matrix. (C) 2013 Elsevier B.V. All rights reserved.
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