Dissipation function of the first-order phase transformation in solids via internal-friction measurements

Autor:	W.G. Zeng, Pcw Fung, Jia-Long Zhang
Rok vydání:	1995
Předmět:	Physics Vibration Phase transition Classical mechanics Transformation (function) Latent heat Phase (waves) Mechanics Function (mathematics) Dissipation Displacement (vector)
Zdroj:	Physical Review B. 52:268-277
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.52.268
Popis:	Reconstruction and displacement of crystal structure and motion of the phase interface induces dissipation of energy, and latent heat appears during a first-order phase transition (FOPT) in solids. In this series of investigations, we first express the energy dissipation as a function of four physical parameters. Since there are more unknowns than the number of equations, we introduce four more equations describing the dynamics of the system on which internal friction (IF, the dissipation of vibration energy) measurements are conducted. Via IF measurements during FOPT, we can then calculate the relevant four parameters and hence the dissipation function. We have completed the first step in establishing a phenomenological theory to describe FOPT in solids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e470d200a8cdc8001c47f51cabc32738 https://doi.org/10.1103/physrevb.52.268 Zobrazit plný text záznamu