Elevated temperature Mg97Y2Cu1 alloy with long period ordered structure

Mg97Y2Cu1 (at.%) cast alloy has an 18R-type long period ordered (LPO) structure that forms coherently with the α-Mg matrix during casting. Hot working improved the mechanical properties of the LPO Mg97Y2Cu1 cast alloy. Hot-extruded LPO Mg97Y2 Cu1 alloy exhibited high tensile mechanical properties. The yield strength, tensile strength and elongation were 297 MPa, 377 MPa and 8.1%, respectively, at ambient temperature, and 273 MPa, 344 MPa and 16.3%, respectively, at 473 K.