High density of shear bands and enhanced free volume induced in Zr70Cu20Ni10 metallic glass by high-energy ball milling

Amorphization of CuZr Based Alloy Powders by Mechanical Milling

“…1, it can be seen that an unknown phase with a composition of Al 13 Cu 37 Zr 50 (at%) formed in both alloys, which has a distorted cubic unit cell with a 0 = 12,18 Å, γ = 90°. Identified CuZr phase can be observed in Cu 49 Zr 45 Al 6 , which was found in the Ni containing alloy , as well. In this case, the CuZr dissolved 6 at% nickel.…”

“…Glass-forming ability has been evaluated by ΔT x value, because large ΔT x value implies high resistance against crystallization [18]. Table 1 summarizes thermal properties of the powders milled for 15 h. Glass transition temperature can be seen only in the curve of Cu 49 Zr 45 Al 6 . The value of ΔT x being equal to 64 implies a comparatively high glass forming ability.…”

“…Aluminum and nickel have been regarded as useful elements to improve the plasticity, thermals stability and glass forming ability of the CuZr-based BMGs [4,5,6].…”

Thermal and soft magnetic properties of Co40Fe22Ta8B30 glassy particles: In-situ X-ray diffraction and magnetometry studies

“…23,24 It has been suggested that the excess free volume can produce line defects called quasi dislocation dipoles, QDDs, which are the main source of stress in the glassy phase. 25 The QDDs may act as the pinning centers for the movement and rotation of magnetic domain walls and consequently increase the coercivity.…”

The Way from Today's Materials to New Kinds of Amorphous Solids: Nano-glasses

“…Due to the enhanced free volume in shear bands (Li 2002;Shao et al 2012), the average free volume content of a glass was found to increase Liu et al 2010) with increasing plastic deformation. However, despite of the similarity between the microstructural features of a nano-glass produced by consolidating nanometer-sized glassy spheres and a nano-glass produced by introducing a high density of shear bands, the results of recent studies by molecular dynamics (MD) suggest (cf.…”