MECHANICAL　PROPERTIES　AND　MICROSTRUCTURES　OF　Al-Mg-Li-Zr　ALLOYS-CONTAINING　SILVER

ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 4 No. 4 December 1994

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Zhang Siqi ;Yin Zhimin ;Shen Jian ;Lu Bin ;Liang Ying ;

(Department of Materials Science and Engineering; Central South University of Technolgy; Changsha 410083)

Abstract: The effect of adding Ag on the mechanical properties and microstructures of Al-Mg-Li-Zr alloys was investigated. The results show that small addition of Ag in the alloys can evidently refine the grains of as-cast alloys, accelerate the aging process, promote the precipitation of δ'(Al₃Li) and then lead to increase of the strength of the alloys. Mechanisms of refining and strengthening were discussed.

Key words: Al-Li alloys silver microstructures mechanical properties

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