scholarly journals Modeling strain-path changes in aluminum and steel

2017 ◽  
Vol 117 ◽  
pp. 123-136 ◽  
Author(s):  
Jisheng Qin ◽  
Bjørn Holmedal ◽  
Kai Zhang ◽  
Odd Sture Hopperstad
Keyword(s):  
Strain Path ◽  
Strain Path Changes

Mechanisms Controlling Ductility Loss from Abrupt Strain Path Changes in a Low Carbon Steel

2021 ◽  
Author(s):  
Anastasia Vrettou ◽  
Hiroto Kitaguchi ◽  
Biao Cai ◽  
Thomas Connolley ◽  
David M. Collins
Keyword(s):  
Carbon Steel ◽  
Strain Path ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ductility Loss ◽  
Strain Path Changes

scholarly journals In situ tension-tension strain path changes of cold-rolled Mg AZ31B

2019 ◽  
Vol 164 ◽  
pp. 135-152 ◽  
Author(s):  
K. Sofinowski ◽  
T. Panzner ◽  
M. Kubenova ◽  
J. Čapek ◽  
S. Van Petegem ◽  
...  
Keyword(s):  
Strain Path ◽  
Cold Rolled ◽  
Strain Path Changes

scholarly journals Constitutive modelling of magnesium alloy sheets under strain path changes

2016 ◽  
Vol 734 ◽  
pp. 032135
Author(s):  
Jinwoo Lee ◽  
Young-Seon Lee ◽  
Myoung-Gyu Lee ◽  
Daeyong Kim
Keyword(s):  
Magnesium Alloy ◽  
Strain Path ◽  
Constitutive Modelling ◽  
Strain Path Changes

scholarly journals Micromechanical modelling of the elastoplastic behaviour of metallic material under strain-path changes

2009 ◽  
Vol 44 (2) ◽  
pp. 285-296 ◽  
Author(s):  
Jamal Fajoui ◽  
David Gloaguen ◽  
Bruno Courant ◽  
Ronald Guillén
Keyword(s):  
Strain Path ◽  
Metallic Material ◽  
Micromechanical Modelling ◽  
Strain Path Changes

Orientation and Path Dependence of Formability in the Stress- and the Extended Stress-Based Forming Limit Curves

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
C. Hari Manoj Simha ◽  
Kaan Inal ◽  
Michael J. Worswick
Keyword(s):  
Strain Path ◽  
Path Dependence ◽  
Forming Limit ◽  
Stress Space ◽  
Forming Limit Diagrams ◽  
Metall Trans ◽  
Strain Paths ◽  
Strain Path Changes ◽  
Path Dependent ◽  
Forming Limit Curves

This article analyzes the formability data sets for aluminum killed steel (Laukonis, J. V., and Ghosh, A. K., 1978, “Effects of Strain Path Changes on the Formability of Sheet Metals,” Metall. Trans. A., 9, pp. 1849–1856), for Al 2008-T4 (Graf, A., and Hosford, W., 1993, “Effect of Changing Strain Paths on Forming Limit Diagrams of Al 2008-T4,” Metall. Trans. A, 24A, pp. 2503–2512) and for Al 6111-T4 (Graf, A., and Hosford, W., 1994, “The Influence of Strain-Path Changes on Forming Limit Diagrams of Al 6111 T4,” Int. J. Mech. Sci., 36, pp. 897–910). These articles present strain-based forming limit curves (ϵFLCs) for both as-received and prestrained sheets. Using phenomenological yield functions, and assuming isotropic hardening, the ϵFLCs are transformed into principal stress space to obtain stress-based forming limit curves (σFLCs) and the principal stresses are transformed into effective stress and mean stress space to obtain the extended stress-based forming limit curves (XSFLCs). A definition of path dependence for the σFLC and XSFLC is proposed and used to classify the obtained limit curves as path dependent or independent. The path dependence of forming limit stresses is observed for some of the prestrain paths. Based on the results, a novel criterion that, with a knowledge of the forming limit stresses of the as-received material, can be used to predict whether the limit stresses are path dependent or independent for a given prestrain path is proposed. The results also suggest that kinematic hardening and transient hardening effects may explain the path dependence observed in some of the prestrain paths.

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