Triple yielding and deformation mechanisms in metastable Cu47.5Zr47.5Al5 composites

Deformation-Induced Martensitic Transformation in Cu-Zr-Zn Bulk Metallic Glass Composites

“…Until now, CuZr-and TiNiCu-based alloy systems with different compositions have been fabricated into BMG composites [19][20][21][22][23][24][25][26][27][28]. For example, CuZr-based BMG composites with different sample sizes containing minor element additions such as Al, Ti, Ag, Ni, Co, Y, Er, V, W, or Ta have been successfully fabricated [20][21][22][23][24][25][29][30][31][32][33][34][35][36][37].…”

“…Recently, it has been found that, by introducing a shape memory ductile phase into the glassy matrix, the fabricated BMG composites show not only a pronounced tensile ductility but also a macroscopic work-hardening capability during deformation at room temperature [19][20][21][22][23][24][25][26][27]. Upon loading, besides the formation of multiple shear bands in the glassy matrix, ductile shape memory crystals experience the martensitic transformation (MT) from a cubic phase to monoclinic phases [19][20][21][22][23][24][25][26][27], which can provide the pronounced work hardening.…”

“…Upon loading, besides the formation of multiple shear bands in the glassy matrix, ductile shape memory crystals experience the martensitic transformation (MT) from a cubic phase to monoclinic phases [19][20][21][22][23][24][25][26][27], which can provide the pronounced work hardening. Hence, the weakness of the work-softening effect during deformation of BMG composites can be effectively overcome.…”

A Numerical Simulation of a Ni-based Bulk Metallic Glass During Compressive Deformation and Fracture

“…The model assumes that the equivalent plastic strain at the onset of damage is a function of the shear stress ratio and strain rate. The properties of the present material, elastic modulus(GPa), Poisson ration, density (g/cm 3 ) and fracture strength (MPa) for different Ni-based BMG rods are listed in Table 1.…”

“…Bulk metallic glasses (BMGs) have shown excellent mechanical properties,including high strength, large elastic strain limit, which makes them ideal for structural and functional applications [1][2][3] . However, their poor ductility at room temperature has significantly limited their application as a potential engineering material [4][5][6] .…”