Mechanical properties and fracture mechanism of as-cast Mg77TM12Zn5Y6 (TM=Cu, Ni) bulk amorphous matrix composites

The Fracture Processes of Mg81Ni8Zn5Y6 Bulk Metallic Glass Matrix Composite with a Long-period Stacking Ordered Structure

“…This kind of characteristic is consistent with the structure (LPSO + amorphous phase) of the alloy. This phenomenon is similar with the results obtained by previously papers [5,22], but the vein patterns are relatively fine. Meanwhile, some voids can be observed in glassy matrix fracture areas from the Fig.…”

“…The reinforcing phases in BMG matrix composite can exactly hinder the propagation of shear bands and promote the multiplication of shear bands, and then retard the occurrence of catastrophic failure. Based on our investigation on the microstructure and mechanical properties of LPSO structure reinforced Mg-based amorphous matrix composites [22], the spatial structure of Mg81Ni8Zn5Y6 BMG matrix composite and its corresponding mechanical property were reported in this paper. The lateral surfaces and the fracture surfaces of the samples with different loading stages were observed.…”

Phase separation and plastic deformation in an Mg-based bulk metallic glass

“…Therefore, in order to improve the plastic strain of the BMGs, many in situ [2,3] precipitate crystalline phases or introduced foreign particles into the BMG matrix [4], the socalled BMG composites, were developed. It is well known that the plastic strain of BMG composites is determined by shear bands (SBs) formation, multiplication and interaction [5][6][7], therefore, any methods that can cause multiple SBs formation are possible to improve the plasticity of BMGs.…”

Enhanced plasticity in the Zr–Cu–Ni–Al–Nb alloy system by in-situ formation of two glassy phases

“…Despite of various advantages, deformation in a monolithic Zr-based BMG is usually localized within shear bands (SBs) that may suddenly propagate and lead to the catastrophic failure of the glass under mechanical loading. To overcome the brittle nature of this material, great efforts have been made to develop composite materials by in-situ precipitation of a crystalline phase during solidification [3,4] or by addition of second-phase particles/fibers into the liquid BMG [5,6].…”