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A numerical model for predicting the Zener-Hollomon parameter in the friction stir processing of AZ31B

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dc.contributor.author Ammouri, Ali H.
dc.contributor.author Kheireddine, Ali H.
dc.contributor.author Hamade, Ramsey F.
dc.date.accessioned 2017-05-24T09:05:19Z
dc.date.available 2017-05-24T09:05:19Z
dc.identifier.uri http://hdl.handle.net/10725/5662
dc.description.abstract Grain size determines to a large degree the mechanical properties of the friction stir processed (FSP) material. Developed in this work is a numerical (FEM) based-model for predicting values of the Zener-Hollomon parameter (Z-parameter) as function of input process parameters during friction stir processing of AZ31B. Prediction of Z values is desirable given that direct relations exist between the Z-parameter and the average grain size in the dynamically recrystallized zone (DRX). For this purpose, utilized in this work is a robust finite element model with a suitable constitutive equation and boundary conditions the results of which have been previously validated against published experimental data. A virtual test matrix constituting of 16 cases (4 spindle speed, N, x 4 feed, f) was run. Based on resulting state variables of strain rates and temperatures at a representative point within the stir zone, a statistically-validated power equation model was developed that relates Z-parameter values to input parameters of speed and feed. The results of the numerically developed power equation were validated against experimental results. This model can be readily used in future control frameworks to FSP produce AZ31B sheets of a predefined target grain size. en_US
dc.language.iso en en_US
dc.title A numerical model for predicting the Zener-Hollomon parameter in the friction stir processing of AZ31B en_US
dc.type Conference Paper / Proceeding en_US
dc.author.school SOE en_US
dc.author.idnumber 201306469 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.keywords Zener-Hollomon en_US
dc.keywords AZ31B en_US
dc.keywords FEM en_US
dc.keywords Friction stir processing en_US
dc.identifier.doi http://de.doi.org/10.4028/www.scientific.net/MSF.783-786.93
dc.identifier.ctation Ammouri, A. H., Kheireddine, A. H., & Hamade, R. F. (2014, April). A Numerical Model for Predicting the Zener-Hollomon Parameter in the Friction Stir Processing of AZ31B. In Materials Science Forum (Vol. 783, pp. 93-99). Trans Tech Publications. en_US
dc.author.email ali.ammouri@lau.edu.lb en_US
dc.conference.date December 2-6, 2013
dc.conference.place Las Vegas, USA
dc.conference.title International Conference on Processing and Manufacturing of Advanced Materials
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.researchgate.net/profile/Ramsey_Hamade2/publication/259357441_A_Numerical_Model_for_Predicting_the_Zener-Hollomon_Parameter_in_the_Friction_Stir_Processing_of_AZ31B/links/54ae70c90cf2828b29fd2237.pdf en_US
dc.author.affiliation Lebanese American University en_US


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