Prediction of the critical strain in the Portevin-LeChatelier effect

R. Onodera, T. Morikawa

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The critical (onset) strain εc of a serrated flow was predicted by phenomenological theory based on the strain-softening model. The critical strain predicted by the theory agreed quantitatively with experimental data. In particular, the theory could explain the relation between εc and strain rate ε: 3 ln εc=C+ln ε+E/RT without using the concept of a Cottrell atmosphere. Moreover, the increase in the critical strain for very small strain rates (the so-called type C serration) could also be simply explained by the theory.

Original languageEnglish
Pages (from-to)236-243
Number of pages8
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number4
Publication statusPublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Prediction of the critical strain in the Portevin-LeChatelier effect'. Together they form a unique fingerprint.

Cite this