Microstructure evolution of Zn–0.2Mg–0.8Mn(wt-%) alloys with different initial textures during room-temperature compression

Abstract

Zn–0.2Mg–0.8Mn alloys extruded at 300 and 150°C exhibited similar grain size, second phases, but different textures which were basal and non-basal texture, respectively. The initial textures affected the yielding and strain hardening stages. Non-basal texture was not conducive to the slipping of dislocations, causing high yield strength of 378 MPa but low strain hardening rate. Average grain size decreased from 2.2 ∼ 2.3 μm to 0.7 ∼ 0.8 μm by the formation of low angle grain boundaries. Deformation texture with [Formula: see text] (CD: compressive direction) was introduced by deformation. Dynamic recrystallisation (DRX) occurred as strain exceeded 0.16 and caused softening for both of the alloys. The DRXed grains exhibited average size of 0.7 ∼ 0.8 μm and texture with 〈0001〉 deviating 15° ∼ 30° away from CD.

Structural and temporal dynamics analysis of zinc-based biomaterials: History, research hotspots and emerging trends

“…Mn, Ca, Sr, Ag, Fe, and Zr are added to Zn–Mg alloys; Al, Mg, Sr, Cu, and Ca are added to Zn–Li alloys; Ag, Cu, Ca, Mg, and Fe are added to Zn–Mn alloys; and Ag, Mg, Ca, Fe, and Li are added to Zn–Cu alloys. Combined with different processing techniques, the mechanical properties, corrosion rate, and biocompatibility of the alloys can meet clinical requirements [ 72 , 90 , [102] , [103] , [104] , [105] , [106] , [107] , [108] , [109] ]. Research on dynamic recrystallization, strain softening, and creep effects has gradually gained attention in the field of biotechnology.…”