Effect of Mg on microstructure and mechanical properties of Al-Mg alloys produced by high pressure torsion
Liu, Yang; Liu, Manping; Chen, Xuefei; Cao, Yang; Roven, Hans Jørgen; Maxim, Murashkin; Valiev, Ruslan Z.; Zhou, Hao
Journal article, Peer reviewed
Accepted version
Date
2019Metadata
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- Institutt for materialteknologi [2555]
- Publikasjoner fra CRIStin - NTNU [38576]
Abstract
Al-Mg alloys are a series of low cost and low density Al alloys, which show remarkable strengthening during deformation. In this work, study of commercial purity Al, Al-0.5Mg and Al-4.1Mg alloys was carried out to investigate the effect of Mg on materials strengthening. Slight solid solution strengthening by Mg addition is found in the as-cast alloys. While further significant strengthening effect is achieved in the alloys produced by high pressure torsion. An extraordinarily high strength of ~800 MPa is achieved in the Al-4.1Mg alloy, as a result of deformation induced ultrafine grains, high density stacking faults and Mg segregation.