Izvorni znanstveni članak
Lattice vibration aspect of some metallurgical properties of cubic crystals
Muhammad Zakria Butt
Um Ul Kalsoom
Sažetak
The Debye-Waller thermal parameter B is a measure of the mean-square amplitude of atomic vibrations hu2i. For monoatomic cubic crystals in which the vibrations are isotropic, B = 8πhu2i/3. In this study, it is observed that various metallurgical properties, e.g., ultimate tensile strength, creep-onset temperature, recrystallisation temperature, activation energy for grain boundary self-diffusion, solubility limit, etc. of cubic elements are a unique function of their B-factors. The power regression formula Y = Y0(B/B0)M depicts the correlation between a metallurgical property Y and the Debye-Waller thermal parameter B. The regression coefficient Y0 and regression power M are determined by the least-squares method, while B0 is a constant which makes the equation dimensionally homogeneous.
Ključne riječi
Debye-Waller thermal parameter; ultimate tensile strength; creep-onset temperature; recrystallisation temperature; activation energy for growth; solubility limit; cubic metals
Hrčak ID:
300927
URI
Datum izdavanja:
2.5.1999.
Posjeta: 186 *