a new thermo elasto viscoplastic crystal plasticity framework to predict the formability of aluminum alloys at elevated temperatures

This content has been downloaded from IOPscience Please scroll down to see the full text Download details IP Address 80 82 78 170 This content was downloaded on 16/01/2017 at 14 08 Please note that te[.]

Home Search Collections Journals About Contact us My IOPscience A New Thermo-Elasto-Viscoplastic Crystal Plasticity Framework to Predict the Formability of Aluminum Alloys at Elevated Temperatures This content has been downloaded from IOPscience Please scroll down to see the full text 2016 J Phys.: Conf Ser 734 032136 (http://iopscience.iop.org/1742-6596/734/3/032136) View the table of contents for this issue, or go to the journal homepage for more Download details: IP Address: 80.82.78.170 This content was downloaded on 16/01/2017 at 14:08 Please note that terms and conditions apply You may also be interested in: Improvement of formability of high strength steel sheets in shrink flanging Z Hamedon, Y Abe and K Mori Investigation of the formability of aluminium alloys at elevated temperatures M Tisza, D Budai, P Z Kovács et al Formability analysis of aluminum alloys through deep drawing process U Pranavi, Perumalla Janaki Ramulu, Ch Chandramouli et al High temperature mechanical properties of Ti-47Al-2Cr (at %) alloy produced using powder compact forging of a mechanically milled powder V N Nadakuduru, D L Zhang, P Cao et al Grain Size Effect on Nanopattern Formability in Direct Imprint Chung Han Yao, Chien Li Wu and Cheng Kuo Sung An experimental investigation of springback of AA6061 aluminum alloy strip via V- bending process A B Abdullah and Z Samad Flow behaviour of magnesium alloy AZ31B processed by equal-channel angular pressing M S Arun and U Chakkingal Optimization of the super lateral energy in laser surface alloying of aluminum N Bidin, M Abdullah, M S Shaharin et al Nano-patterning on soluble block copolymer polyimide by nanoimprint Kenta Suzuki, Sung-Won Youn, Hiroshi Hiroshima et al Numisheet Journal of Physics: Conference Series 734 (2016) 032136 IOP Publishing doi:10.1088/1742-6596/734/3/032136 A New Thermo-Elasto-Viscoplastic Crystal Plasticity Framework to Predict the Formability of Aluminum Alloys at Elevated Temperatures Kaan Inal¹, Edward Cyr¹, Raja K Mishra2 Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Canada, N2L 3G1 General Motors Research & Development Center, Warren, MI 48090, USA *Corresponding author: Tel: +1 519 888 4567 Ext 38114 Fax: +1 519 885 5862 E-mail address: kinal@uwaterloo.ca Abstract A new thermo-elasto-viscoplastic (TEV) crystal plasticity constitutive formulation is developed and implemented in the well-known Marciniak-Kuczynski analysis to predict the formability of aluminum alloys (AA) 5754 and 3003 at elevated temperatures The model takes into account the temperature dependence of the single crystal elastic coefficients, single slip hardening parameters, thermal softening and slip rate sensitivity Temperature dependent single slip hardening parameters are determined from uniaxial tension simulations at room and elevated temperatures The new model is able to accurately predict the experimental forming limit diagrams (FLDs) without the need for further curve fitting The effects of elastic constants and thermal softening on FLD predictions are discussed, and a new expression to represent the temperature dependence of the initial imperfection (for the M-K analysis) is developed to enable the model to successfully predict the FLDs for any temperature in the warm forming regime prior to recrystallization Keywords: Crystal Plasticity; Forming Limit Diagram; Temperature; M-K Analysis; aluminum alloys Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI Published under licence by IOP Publishing Ltd ... Formability of Aluminum Alloys at Elevated Temperatures Kaan Inal¹, Edward Cyr¹, Raja K Mishra2 Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Canada, N2L 3G1... alloys (AA) 5754 and 3003 at elevated temperatures The model takes into account the temperature dependence of the single crystal elastic coefficients, single slip hardening parameters, thermal softening... thermo- elasto- viscoplastic (TEV) crystal plasticity constitutive formulation is developed and implemented in the well-known Marciniak-Kuczynski analysis to predict the formability of aluminum alloys