Effect of Mg on microstructure and mechanical properties of Al-Mg alloys produced by high pressure torsion. (15th January 2019)

• Record Type: Journal Article
• Authors: Liu, Yang; Liu, Manping; Chen, Xuefei; Cao, Yang; Roven, Hans J.; Murashkin, Maxim; Valiev, Ruslan Z.; Zhou, Hao
• Is Part Of: Scripta materialia. Number 159(2019)
• Page Start: 137
• Page End: 141
• Publication Date: 2019-01-15
• Subjects: Al-Mg alloys -- High pressure torsion -- Nanocrystalline materials -- Transmission electron microscopy; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.09.033
• Languages: English
• ISSNs: 1359-6462

Abstract

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. Graphical abstract: Unlabelled Image