Vibrational Dynamics of Pd-Ni-P Bulk Metallic Glasses: a Local Pseudopotential Study
نویسندگان
چکیده
In the present paper, Phonon modes and elastic constant of three different concentrations PdxNi1-xP (Pd64Ni16P20, Pd40Ni40P20 Pd16Ni64P20) bulk metallic glass are calculated using (1) Hubbard-Beeby (HB) (2) Takeno-Goda (TG) approach along with our well established local model potential. The Hartree (H), Farid et al (F) Sarkar (S) field correlation functions (LFCF) employed to examine effect screening function on collective dynamics Pd-Ni-P glasses. Results also reported for phonon dispersion curve, propagation wave properties viz: modulus BT, rigidity G, Poisson’s ratio ξ, Young’s Y, Debye temperature ƟD. However, constants results agree other theoretical available experimental data.
منابع مشابه
Formation of Ti-Zr-Cu-Ni bulk metallic glasses
Formation of bulk metallic glass in quaternary Ti-Zr-Cu-Ni alloys by relatively slow cooling from the melt is reported. Thick strips of metallic glass were obtained by the method of metal mold casting. The glass forming ability of the quaternary alloys exceeds that of binary or ternary alloys containing the same elements due to the complexity of the system. The best glass forming alloys such as...
متن کاملHidden amorphous phase and reentrant supercooled liquid in Pd-Ni-P metallic glasses
An anomaly in differential scanning calorimetry has been reported in a number of metallic glass materials in which a broad exothermal peak was observed between the glass and crystallization temperatures. The mystery surrounding this calorimetric anomaly is epitomized by four decades long studies of Pd-Ni-P metallic glasses, arguably the best glass-forming alloys. Here we show, using a suite of ...
متن کاملBiocompatibility study on Ni-free Ti-based and Zr-based bulk metallic glasses.
Safety and reliability are crucial issues for medical instruments and implants. In the past few decays, bulk metallic glasses (BMGs) have drawn attentions due to their superior mechanical properties, good corrosion resistance, antibacterial and good biocompatibility. However, most Zr-based and Ti-based BMGs contain Ni as an important element which is prone to human allergy problem. In this stud...
متن کاملFracture Toughness Study on Bulk Metallic Glasses and Novel Joining Method Using Bulk Metallic Glass Solder
The fracture toughness of three new compositional variants of the Zr-Ti-Be-LTM (Late Transition Metal) family of bulk metallic glasses (BMG’s) are studied in the as-cast and annealed condition. Quaternary Zr-Ti-Cu-Be alloys consistently had linear elastic fracture toughness values greater than 80 MPa·m, while Vitreloy 1, a Zr-Ti-Cu-Ni-Be alloy, had an average fracture toughness of 48.5 MPa·m wi...
متن کاملStructural study of conventional and bulk metallic glasses during annealing
Metallic glasses with conventional glass-forming ability (Al-Fe-Nd, Fe-Zr-B, Fe-B-Nb compositions) and bulk metallic glasses (Ca-Mg-Cu compositions) were studied by synchrotron X-ray diffraction during annealing throughout glass transition and crystallization temperatures. The analysis of the first diffraction peak position during the annealing process allowed us to follow the free volume chang...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Communications in Physics
سال: 2022
ISSN: ['0868-3166']
DOI: https://doi.org/10.15625/0868-3166/16055