Development of a high-strength Mg?11Gd?2Ag (wt%) alloy sheet with extra-low anisotropy

A high-performance Mg?11Gd?2Ag (wt%) alloy sheet was prepared via a procedure of high-temperature rolling combined with aging. The sheet showed a tensile yield strength of 393 MPa, an ultimate tensile strength of 435 MPa, and an elongation of 5.2% along the rolling direction while possessing a near-isotropic mechanical response and a weak planar anisotropy. The grain refinement, the basal texture, the stabilized band-like structure boundaries, and the promoted precipitation of ?? and ?? nanoplates synergistically enhanced the strength. Especially, the grain orientation with a-axis randomly distributed in the rolling plane gave rise to the extra-low anisotropy. The present work is contributing to developing high-performance Mg alloy sheets and the broadening of their application.

Automated summary

A high-performance Mg-11Gd-2Ag alloy sheet was prepared using a process of high-temperature rolling combined with aging, showing strong tensile strength and low isotropy in mechanical response. This new material has potential for development in various applications.