Macroscopic and microscopic descriptions of the plastic deformation of Fcc metals over a wide range of strain and temperature

T. Csanádi, N. Chinh, J. Gubicza, T. G. Langdon

Research output: Contribution to journalArticle

Abstract

The plastic behavior of face-centered cubic metals was investigated over a wide range of strain and testing temperature. The experimental stress-strain data were described using both macroscopic and microscopic, well-established relationships. The characteristics of these descriptions are discussed and compared with each other. The analysis of the characteristics leads to a definition of the low and high temperature deformation regions, where the kinetics of both the dislocation-multiplication and the dislocation-annihilation (recovery) are different. For pure aluminum, it is shown that the boundary between these two regions occurs at a homologous temperature of the order of ≈ 0.5T m where T m is the absolute melting temperature. From this analysis, correlations are also drawn between the macroscopic parameters describing the stress-strain relationship and the fundamental characteristics of the microscopic processes both at room temperature and elevated temperatures.

Original languageEnglish
Pages (from-to)630-633
Number of pages4
JournalActa Physica Polonica A
Volume122
Issue number3
Publication statusPublished - Sep 2012

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plastic deformation
metals
stress-strain relationships
temperature
multiplication
plastics
recovery
melting
aluminum
kinetics
room temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Macroscopic and microscopic descriptions of the plastic deformation of Fcc metals over a wide range of strain and temperature. / Csanádi, T.; Chinh, N.; Gubicza, J.; Langdon, T. G.

In: Acta Physica Polonica A, Vol. 122, No. 3, 09.2012, p. 630-633.

Research output: Contribution to journalArticle

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