Comparison of mechanical behavior between bulk and ribbon Cu-based metallic glasses

Structural Changes in Deformed Soft Magnetic Ni-Based Metallic Glass

“…The enthalpy decreases with the structural relaxation from the value of 23.6 J/g for the sample in as--quenched state to the value of 0.3 J/g for the sample subjected to the third heating run. The enthalpy value for as-quenched sample is in good agreement with the one published for Cu-based amorphous ribbon [8]. The heat released from the sample subjected to higher deformation (8.5 J/g) is smaller than from the one subjected to lower deformation (13 J/g).…”

Synthesis and Indentation Behavior of Amorphous and Nanocrystalline Phases in Rapidly Quenched Cu–Ga–Mg–Ti and Cu–Al–Mg–Ti Alloys

“…These are slightly higher than that of Cu-Zr-Al, Cu-Zn-Al, and Cu-Zr-Ti metallic glasses and their composites [7,11,25]. The hardness values are lower in comparison with (Al 4 Cu 9 ) 94.5 Cr 5.5 alloy [10].…”

“…Therefore, recent studies have been taken up from the perspective of mechanical behavior. The Cubased fine-structured composite with nanometer-sized grains of crystalline phases show high strength and hardness [5,[9][10][11]. Nanostructured materials offer new opportunities to extend our understanding of the structureproperty relationship in solid materials down to the nanometer regime; they are expected to possess novel properties [12][13][14].…”

The Effect of Thermal Cycling Treatments on the Thermal Stability and Mechanical Properties of a Ti-Based Bulk Metallic Glass Composite

“…T g and T 0 can be regarded as constants that are consistent with the thermal stability, so σ g keeps constant theoretically; the fluctuation of data may be ascribed to slight structural relaxation and spatial heterogeneity, but actually the atoms are arranged in a compact and orderly manner, forming many clusters, which shows a reduction of ϕ c and an increase of ϕ g in nanoscales, resulting in an enhanced total yield strength (σ c < σ g ) [36]. The amorphous atoms become stiffer after structural relaxation and the interaction force increases, hence the Young's modulus increases naturally.…”

“…In addition, the crystallization behavior near T x after different treatment changes a little and the effect is negligible. It is known that a slight structural relaxation occurs when amorphous alloys are in a cryogenic environment; meanwhile, the distance between short-ordered clusters may change, though they are usually 1-2 nm in magnitude [36,37]. A reasonable annealing process can relieve internal stresses previously existent in the metal; therefore, atomic arrangement tends to become ordered and homogeneous.…”