ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In most of the simulation studies of equal channel angular pressing (ECAP) it has beenassumed that materials obey isotropic hardening law. However, in the case of precipitationhardenable alloys, an accurate prediction of the deformation behavior requires incorporation ofkinematic hardening model. In this study, the influences of kinematic, isotropic and combinedhardening laws on deformation behavior have been investigated. For this purpose, an ECAP dieconsisting of two 120° channels has been selected, and the effect of hardening law on the strainprofile and ram pressure at the final exit channel has been studied. The simulation results showedthat the hardening mechanism does not affect the strain profiles extensively; but, when kinematichardening mechanism was considered the ram pressure decreases significantly due to less hardeningof the material during reverse loading in the final exit channel
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.1021.pdf
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