Original scientific paper

Lattice vibration aspect of some metallurgical properties of cubic crystals

Muhammad Zakria Butt
Um Ul Kalsoom

Abstract

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.

Keywords

Debye-Waller thermal parameter; ultimate tensile strength; creep-onset temperature; recrystallisation temperature; activation energy for growth; solubility limit; cubic metals

Hrčak ID:

300927

URI

https://hrcak.srce.hr/300927

Publication date:

2.5.1999.

Article data in other languages: croatian

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