NDLI: Constitutive relations for metals under high-temperature plastic strains

Content Provider	Springer Nature Link
Author	Kovalov, A. V.
Copyright Year	2009
Abstract	We construct constitutive relations for metals subjected to large plastic strains at high temperatures.A metal is an elastoviscoplastic medium strengthening under plastic strains and softening owing to return processes and dynamic recrystallization [1, 2]. In [3–7], constitutive relations were obtained for a viscoplastic medium under high-temperature plastic strains. These relations include kinetic equations describing the return process [4], recrystallization [5, 7], and the joint action of the return process and recrystallization [3, 6]. In [3, 7], the recrystallization nucleus density is additionally introduced, and in [3, 6], the increase in metal recrystallization volumes is taken into account. In the mathematical model in [5], the authors explicitly use separate points of the strengthening curves, which narrows the scope of the model. An analysis shows that, to obtain an adequate description of metal rheology under complicated laws and for a wide range of the strain rate variation, it is necessary to improve the constitutive relations obtained earlier.
Starting Page	98
Ending Page	104
Page Count	7
File Format	PDF
ISSN	00256544
Journal	Mechanics of Solids
Volume Number	44
Issue Number	1
e-ISSN	19347936
Language	English
Publisher	Allerton Press, Inc.
Publisher Date	2009-03-08
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials

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