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A methodology for controlling grain size in friction stir processes

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dc.contributor.author Ammouri, Ali H.
dc.contributor.author Hamade, Ramsey F.
dc.date.accessioned 2018-02-27T12:28:42Z
dc.date.available 2018-02-27T12:28:42Z
dc.date.copyright 2014 en_US
dc.identifier.uri http://hdl.handle.net/10725/7155
dc.description.abstract Microstructural modification via dynamic recrystallization (DRX) is the main mechanism involved in grain refinement associated with friction stir processing. Introduced in this work is a methodology for controlling grain size through the manipulation of process parameters in friction stir processes. A robust 3D FE model was used to simulate a selective test matrix whose resulting state variables were used to relate the desired output, the average grain size in this case, to the controlled process parameters. The Zener-Hollomon parameter, which is namely the temperature compensated strain rate, was used in calculating the predicted grain size from the state variables of the FEM simulations. The methodology was validated by comparing experimental test cases whose target grain size was found to compare favorably with the resulting microstructure. Evidence of grain size refinement and homogeneity was observed in the friction stir processed samples of Magnesium alloy AZ31B. en_US
dc.language.iso en en_US
dc.title A methodology for controlling grain size in friction stir processes 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 Friction stir processing en_US
dc.keywords Grain size en_US
dc.keywords Control methodology en_US
dc.keywords AZ31B en_US
dc.identifier.ctation Ammouri, A. H., & Hamade, R. F. (2014). A Methodology for Controlling Grain Size in Friction Stir Processes. Proceedings of NAMRI/SME, 42. en_US
dc.author.email ali.ammouri@lau.edu.lb en_US
dc.conference.date 2014 en_US
dc.conference.title Proceedings of NAMRI/SME en_US
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/287039743_A_methodology_for_controlling_grain_size_in_friction_stir_processes/links/59018471a6fdcc8ed50f1e61/A-methodology-for-controlling-grain-size-in-friction-stir-processes.pdf en_US
dc.volume 42 en_US
dc.author.affiliation Lebanese American University en_US


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