A novel approach for producing Mg-3Al-1Zn-0.2Mn alloy wire with a promising combination of strength and ductility using CoreFlowTM

Xingjian Zhao, Xun Zeng, Liang Yuan, Joao Gandra, Qamar Hayat, Mingwen Bai, W Mark Rainforth, Dikai Guan

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
37 Downloads (Pure)

Abstract

Mg-3Al-1Zn-0.2Mn (wt.%, AZ31B) wires were successfully produced from commercial hot-rolled plates in one step using the CoreFlowTM process, a novel stationary shoulder friction stir extrusion manufacturing. CoreFlowed AZ31B wires exhibited fine grains with a heterogeneous grain size distribution of 6.5 ± 4.2 μm along the transverse direction (TD) compared with the as-received material. A weakened texture was also obtained in CoreFlowed AZ31B, with basal poles aligned parallel to TD shift toward extrusion direction (ED) from wire center to edge. Periodic needle-like regions with a distinctively different orientation from neighbouring regions were observed at the sample edge. The engineering ultimate tensile strength (UTS) and elongation (El) of the CoreFlowed sample was 258 ± 5 MPa and 22.3 ± 0.8%. The El was significantly increased by 58% with equivalent UTS compared to the as-received material. Such a good combination of strength and ductility is attributed to grain refinement with heterogeneity, texture weakening, and homogeneously redistributed second phase particles.
Original languageEnglish
Article number115301
Number of pages6
JournalScripta Materialia
Volume227
Early online date11 Jan 2023
DOIs
Publication statusPublished - 1 Apr 2023

Bibliographical note

Published by Elsevier Ltd on behalf of Acta Materialia Inc. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).

Keywords

  • CoreFlow
  • Stationary shoulder friction stir extrusion
  • Mg alloys
  • Ductility
  • EBSD

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