Achieving a high-strength binary Mg–15Gd alloy by nano substructure with Gd segregation and nano clusters1

Abstract

A high-strength binary Mg–15Gd alloy plate, prepared by the conventional extrusion, warm-rolling and aging, exhibits an excellent mechanical property with 504, 518 MPa and 4.5% for yield strength, ultimate tensile strength and elongation, which is mainly attributed to the nano substructure with boundary segregation of Gd atoms, the high-density nano clusters induced by dislocations in the interior of grains, the high-density dynamical precipitates with submicron size, and the strong basal texture.

Keywords

• Binary Mg–Gd alloy
• nano substructure
• nano clusters
• dynamical precipitates
• segregation