Journal
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
Volume 18, Issue 4, Pages 1332-1344Publisher
SPRINGERNATURE
DOI: 10.1016/j.acme.2018.04.001
Keywords
Mg-Li alloy; Non-basal slip; Extrusion; Texture and mechanical properties
Funding
- AR DB, India
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The present study investigates the possibility of enhancing the strength with ductility of dual-phase magnesium (Mg)-8 lithium (Li) alloy by the combination of alloying addition aluminium (Al) and suitable thermo-mechanical processing. Microstructural evolution, phase analysis and texture studies were performed for Mg-8Li-xAl (x = 0, 2,4 and 6) alloys with the help of scanning electron microscopy (SEM) and X-ray diffraction (XRD). It is understood from the texture studies that the addition of Al to the Mg-8Li alloys activates the non-basal slip at room temperature. In turn, it facilitates the recovery process, hence a substantial improvement in plastic deformation after annealing of the alloys is observed. This is attributed to non-basal slip activity at room temperature. The presence of fine intermetallic compounds in the annealed Mg-8Li-xAl (x = 4 and 6) alloys leads to the higher ultimate strength (193 +/- 7 MPa and 267 +/- 9 MPa) and ductility (20% and 17%), respectively. (c) 2018 Politechnika Wroclawska. Published by Elsevier B.V. All rights reserved.
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