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Micro-Structure and Mechanical Properties of 2A97 Al-Li Alloy Cast by Low-Frequency Electromagnetic Casting

Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, 314 Mailbox, Shenyang 110819, China
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Metals 2019, 9(8), 822; https://doi.org/10.3390/met9080822
Received: 24 June 2019 / Revised: 11 July 2019 / Accepted: 18 July 2019 / Published: 25 July 2019
In this paper, the micro-structure and solid solubility of 2A97 aluminum-lithium alloy ingots prepared by conventional direct chill (DC) casting and low frequency electromagnetic casting (LFEC) as well as the density of precipitates and tensile properties of 2A97 alloy after T6 treatment were investigated. The results show that the low-frequency electromagnetic field during casting had a remarkable effect on the refinement of micro-structure and solid solubility of alloying elements within the grains, which is very helpful to obtain a large number of fine, uniformly-distributed T1 phases. The mechanical properties of 2A97 alloy prepared by low frequency electromagnetic casting after T6 treatment were improved by obtaining a larger number T1 phases. View Full-Text
Keywords: LFEC (low-frequency electromagnetic casting); 2A97; Al-Li alloy; micro-structure; solid solubility; tensile properties LFEC (low-frequency electromagnetic casting); 2A97; Al-Li alloy; micro-structure; solid solubility; tensile properties
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Wang, F.; Wang, X.; Cui, J. Micro-Structure and Mechanical Properties of 2A97 Al-Li Alloy Cast by Low-Frequency Electromagnetic Casting. Metals 2019, 9, 822.

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Metals, EISSN 2075-4701, Published by MDPI AG
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