New Ti-Based Bulk Metallic Glasses with Significant Plasticity

Abstract

Formation of Ti-based bulk metallic glasses was investigated in (Ti,Zr)-(Cu,Ni) pseudobinary system. It was found that glass-forming ability was significantly improved by the addition of Zr and Ni to the Ti-Cu binary alloys.

Effect of Nanocrystal Distribution on Mechanical Properties of Ti-Based Metallic Glasses

“…It has been reported previously that Ti 45 Zr 5 Cu 45 Ni 5 forms bulk specimens of up to 3 mm in diameter consisting of a single glassy phase without crystals. 11) Larger nanocrystals of about 40 nm in diameter were often observed as indicated by the arrow in Fig. 4(a).…”

“…The homogeneous dispersion of nanocrystals in metallic glasses is one method for preparing metallic glasses that undergo plastic deformation by the activation of shear bands. Recently, Ti-based bulk metallic glasses exhibiting plastic deformation have been reported, 6,11) although the microstructures of the materials have yet to be clarified. If the plastic deformation in Ti-based bulk metallic glasses is caused by the dispersion of nanocrystals, it may be possible to increase the plastic strain by optimizing the density, distribution, and morphology of the nanocrystals.…”

“…Various kinds of Ti-based amorphous aloys and metallic glasses have been developed, [1][2][3][4][5][6][7][8][9][10][11][12] due mainly to the light weight and high corrosion resistance properties of Ti. Tibased metallic glasses are therefore attractive candidates for light-weight, high-strength and biocompatible structural materials.…”

Annealing-Induced Devitrification Behavior of a Ti<SUB>47.4</SUB>Zr<SUB>5.3</SUB>Ni<SUB>5.3</SUB>Cu<SUB>42.0</SUB> Glassy Alloy

“…Ti-based glassy alloys exhibit good mechanical properties [1][2][3] and high corrosion resistance. 4) Although many multicomponent glassy alloys exhibiting high glass-forming ability have been developed by use of the high stability of supercooled liquid, the Ti-based glassy alloys do not possess enough high glass-forming ability.…”

Glass-Forming Ability and Thermal Stability of Ti&ndash;Zr&ndash;Cu&ndash;Pd&ndash;Si Bulk Glassy Alloys for Biomedical Applications

“…5) Ti-based bulk glassy alloys are expected to be applied as biomaterials because of their excellent corrosion resistance, good biocompatibility, low Young's modulus and high recovery of strain (>2%). Some of works have been made for Ti-based bulk glassy alloys, such as Ti-Ni-Cu, 6) Ti-Ni-Cu-Co, 7) Ti-Cu-Ni-Sn, 8) Ti-Zr-Cu-Ni 9) and others Ti-based alloys system with Be. 10) However, the toxic elements in the alloys, such as Ni, Al and Be, are not suitable for application as biomaterials.…”