Effect of addition of Sn on the microstructure and mechanical properties of Mg–MM (misch-metal) alloys

Microstructure and mechanical properties of conventional cast and rheocast Mg–Sn based alloys

“…Nayyeri and Mahmudi [12] reported that addition of up to 0.4%Sb in Mg-5%Sn alloy refined the dendritic microstructure, and modified the morphology of Mg 2 Sn phase and caused the formation of some blade-shaped thermally stable precipitates of Mg 3 Sb 2 phase which strengthens both grains and grain boundaries and thus, improves the high temperature creep properties. Literatures have reported the creep properties of Mg-Sn based alloys [11][12][13][14], but no systematic studies on the microstructure and mechanical properties were reported. Liu et al [15] have reported that the addition of Sr to Mg-5%Sn alloy resulted in the grain refinement and formation of MgSnSr phase.…”

Compressive creep behavior of Mg–Sn–La alloys

“…Moreover, it is well known that addition of rare earth (RE) elements in magnesium alloys shows a favorable effect on the mechanism properties. Lim et al [12] reported the secondary phase in Mg-MM alloy changes dramatically with addition of Sn, the small rod-shaped phase forms in Mg-MM-Sn alloys. However, the scientific understanding on the influence of RE elements on the creep behavior of Mg-Sn alloys is not cleared.…”

Enhancement of mechanical properties and formability of Mg–MM–Sn–Al–Zn alloy sheets fabricated by cross-rolling method

“…2 shows the optical micrographs of cast alloys homogenized at 500 • C for 12 h. According to previous results [9,10], microstructures of ET22 and ET33 alloys consisted of ␣-Mg and small rod-type phase (crystal structure: unknown) in interdendritic region. The microstructure of ETZ221 (Mg-2 wt% MM-2 wt% Sn-1 wt% Zn) alloy containing a small amount of Zn was similar to that of ET22 or ET33 alloy.…”

“…Moreover, in general, elongation of alloys containing the secondary phase particles is lower than the solid-solution-type alloys, since geometrically necessary dislocations are formed in the region surrounding the hard particles, leading to debonding between the matrix and particles [16]. However, the previous studies [9,10,17] showed that the distribution as well as the size of particles could affect the elongation-to-fracture of alloys. According to the previous study [17], the fabrication method of rolling perpendicularly to extrusion direction could distribute the intermetallic particles more homogenously, eventuating in enhancement of elongation-to-fracture.…”

“…Recently, it has been shown that Mg-MM-Sn alloys exhibit improved mechanical properties, indicating a possibility to be applied to a wrought magnesium alloy sheets [9]. It has also been shown that addition of a small amount of Al and/or Zn in Mg-2 wt% MM-2 wt% Sn (ET22) alloy results in a simultaneous improvement of strength and ductility.…”