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http://dx.doi.org/10.5228/KSTP.2012.21.6.372

Evaluation of Anisotropic Hardening Models using Two-Step Tension Tests  

Ha, J. (포항공대 철강대학원)
Lee, M.G. (포항공대 철강대학원)
Barlat, Frederic (포항공대 철강대학원)
Publication Information
Transactions of Materials Processing / v.21, no.6, 2012 , pp. 372-377 More about this Journal
Abstract
In this study, the plastic flow behaviors of extra deep drawing quality (EDDQ) steel subjected to non-proportional strain paths were investigated. Two-step uniaxial tension tests, in which the first step was performed in the rolling direction (RD) and the subsequent test in different directions in $15^{\circ}$ increments from the RD, were conducted. The experiments clearly showed that stress overshooting and strain hardening stagnation were the dominant features, which were captured reasonably well using a recently proposed distortional hardening model.
Keywords
Plastic Deformation; Non-proportional Deformation; Constitutive Model; Anisotropic Hardening;
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