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HomeMaterials Science ForumMaterials Science Forum Vol. 998Study on the Modification Effect of Al-Sr Master...

Study on the Modification Effect of Al-Sr Master Alloy on A356 Aluminum Alloy

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Abstract:

A356 aluminum alloy was modified by Al-Sr master alloy, and the eutectic silicon phase was changed from long needle to short fiber. Compared with the untreated, the secondary dendrite spacing decreased by 14.37 %, the tensile strength increased by 13.0 MPa, and the elongation increased by 29.51 %. After modification treatment, more developed secondary dendrites and block inclusions can be seen in the tensile fracture of A356 alloy, which is not conducive to the plasticity and fatigue resistance of the alloy.

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Material Science and Engineering Technology VIII

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Periodical:

Materials Science Forum (Volume 998)

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3-8

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.998.3

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Online since:

June 2020

Authors:

Gui Qing Chen, Gao Sheng Fu*, Kai Huai Yang, Chao Sheng Lin

Keywords:

A356 Aluminum Alloy, Al-Sr Master Alloy, Eutectic Silicon Phase, Modification Treatment

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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