Dissipative processes during the nonequilibrium phase transformations in martensitic thermoelastic alloys
Source: Technical Physics, Volume 55, Number 7, July 2010 , pp. 946-952(7)
Publisher: MAIK Nauka/Interperiodica
Abstract:Martensitic thermoelastic transformations are considered under nonequilibrium conditions, where a system nonmonotonically tends toward a stationary process. The specific features of a phase transformation are experimentally studied on molecular models under these nonequilibrium conditions. A resonance mode of the phase transformation, which can increase the process rate by an order of magnitude without increasing the heat source temperature, is found. The dissipative processes that occur under the monotonic and resonance conditions of martensitic thermoelastic transformations are estimated. The resonance mode is shown to be accompanied by negative entropy production and to demonstrate the self-organization of the system. These results can be used to design materials and techniques for the processing of low-potential heat sources.
Document Type: Research Article
Publication date: July 1, 2010