Premium
On Sequences of Alternate Stable and Unstable Regions along Tensile Deformation Curves
Author(s) -
Kalk A.,
Schwink Ch.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221720114
Subject(s) - deformation (meteorology) , extension (predicate logic) , instability , interval (graph theory) , strain (injury) , materials science , stability (learning theory) , ultimate tensile strength , strain rate , geometry , stress (linguistics) , tensile strain , mechanics , mathematics , composite material , physics , computer science , combinatorics , medicine , linguistics , philosophy , machine learning , programming language
The occurrence and boundaries of (in‐)stabilities along stress–strain curves are investigated for f.c.c. solid solutions of Cu Mn. There are up to four temperature intervals where the σ(ϵ)‐curves over their whole extension are either smooth (stable deformation) or serrated (unstable deformation). In between, three transitional intervals, named α, β, and γ, are constituted. Here two or more regions of stable and unstable deformation alternate along σ(ϵ). In particular, inside interval β a region of stability is embedded between two regions of instability. For two Mn concentrations the variatin of the boundaries with temperature and strain rate is investigated for the intervals α and β. The results allow a comparison with theoretical “scenarios” developed by Kubin and Estrin. Possibilities for an improvement and/or extension of this model are discussed.