A high strength and ductility Mg–Zn–Al–Cu–Mn magnesium alloy |
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| Affiliation: | 1. Department of Mechanical Engineering, Politecnico di Milano, Milan, Italy;2. Department of Management and Engineering, Università di Padova, Stradella S. Nicola 3, 36100 Vicenza, Italy;3. Department of Energy, Politecnico di Milano, Milan, Italy;1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;2. Research Institute (R & D Center), Baosteel Group Corporation, Shanghai 201900, PR China |
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| Abstract: | A high strength Mg–8.0Zn–1.0Al–0.5Cu–0.5Mn (wt.%) magnesium alloy with outstanding ductility was developed using a common casting technique and heat treatment. The microstructure of the as-cast alloy is composed of α-Mg, MgZn, MgZnCu and Al–Mn phases. After the solution treatment and subsequent two-step aging treatment, the yield strength (YS), ultimate tensile strength (UTS) and elongation of the alloy at peak hardness reach 228 MPa, 328 MPa and 16.0% at room temperature, respectively. The comprehensive mechanical properties of the alloy are superior to almost all other high performance casting Mg alloys. |
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