Effect of aluminum content on the texture and mechanical behavior of Mg-1wt% Mn wrought magnesium alloys

M.Z. Bian, A. Tripathi, H. Yu, N.D. Nam, L.M. Yan

Research output: Contribution to journalArticleResearchpeer-review

18 Citations (Scopus)

Abstract

The mechanical response of as-extruded magnesium-aluminummanganese alloy with varying (14. wt%) aluminum content has been examined, while the concentration of manganese is kept constant at 1. wt%. Results indicated that microstructure exhibits more uniform and equiaxed grain structure, and gradual decrease of texture intensity with increasing aluminum content. Mechanical testing results revealed tensile and compressive yield strengths decreased, while yield anisotropy, tensile uniform elongation and strain hardening exponent increased with increasing aluminum content. Weaker texture was considered to be responsible for lower yield strength, and in particular for significant decrease in tensile yield strength. In addition, simulation results revealed that prismatic <.a> and basal <. a> slips played a very important role during tensile deformation, and the contribution of prismatic <. a> slip decreased with increase in aluminum content. On the other hand, {1012} twin was the major deformation mode at the initial stage of the compressive deformation in addition to the basal <. a> slip, and the relative activity of the {1012} twin decreased with increasing aluminum content.
Original languageEnglish
Pages (from-to)320 - 326
Number of pages7
JournalMaterials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume639
DOIs
Publication statusPublished - 2015

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