A novel approach for producing Mg-3Al-1Zn-0.2Mn alloy wire with a promising combination of strength and ductility using CoreFlowTM. (1st April 2023)

• Record Type: Journal Article
• Authors: Zhao, Xingjian; Zeng, Xun; Yuan, Liang; Gandra, Joao; Hayat, Qamar; Bai, Mingwen; Rainforth, W Mark; Guan, Dikai
• Is Part Of: Scripta materialia. Number 227(2023)
• Publication Date: 2023-04-01
• Subjects: CoreFlowTM -- Stationary shoulder friction stir extrusion -- Mg alloys -- Ductility -- EBSD; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2023.115301
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Mg-3Al-1Zn-0.2Mn (wt.%, AZ31B) wires were successfully produced from commercial hot-rolled plates in one step using the CoreFlow TM 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. Graphical abstract: Image, graphical abstract