PHYSICAL ASPECTS OF PLASTIC INSTABILITIES

Authors
LUKAC P BALIK J CHMELIK F
Citation
P. Lukac et al., PHYSICAL ASPECTS OF PLASTIC INSTABILITIES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 45-51
Citations number
35
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
234
Year of publication
1997
Pages
45 - 51
Database
ISI
SICI code
0921-5093(1997)234:<45:PAOPI>2.0.ZU;2-K
Abstract
Serrated yielding is observed in Al-Mg and Al-Zn alloys if they are de formed at suitable strain rate at room temperature. To describe the ph ysical origin of plastic instabilities, the critical strain at which t he instabilities begin is investigated as a function of strain rate. T his paper describes how a combination of tensile testing with various experimental techniques, such as acoustic emission and resistivity mea surements, and with a theoretical model, could help to elucidate the f undamental mechanisms. (C) 1997 Elsevier Science S.A.