TY - JOUR
T1 - Prediction of the critical strain in the Portevin-LeChatelier effect
AU - Onodera, R.
AU - Morikawa, T.
PY - 2001
Y1 - 2001
N2 - 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.
AB - 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.
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U2 - 10.2320/jinstmet1952.65.4_236
DO - 10.2320/jinstmet1952.65.4_236
M3 - Article
AN - SCOPUS:0034977863
SN - 0021-4876
VL - 65
SP - 236
EP - 243
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
IS - 4
ER -