Superplastic forming response of a friction stir processed Mg alloy sheet - A numerical approach

Mohammad Albakri, Bilal Mansoor, Ahmad Albakri, Marwan Khraisheh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Friction stir process (FSP) is a severe plastic deformation based secondary processing technique that can be utilized to engineer novel microstructures in metallic alloys. It is well known that such techniques are cumbersome and require significant experimental work and material to determine optimum processing conditions. Therefore in this work, we propose a new two step numerical approach, where: (i) CFD simulations coupled with Zener-Holloman relation are used to predict microstructure evolution in stirred, transition and heat affected zones of friction stir processed AZ31 Mg alloy sheets, (ii) Finite element simulations are carried out to evaluate superplastic forming characteristics of different microstructures developed after FSP. Simulation trends including forming pressure profiles, dome height evolution, and thickness distribution of friction stir processed sheets are compared with those of the base material. The proposed combination of numerical approaches to model both processing and forming aspects yields a powerful tool to study and optimize processing and forming technologies with limited experimentation.

Original languageEnglish
Title of host publicationMaterials Science Forum
Pages192-197
Number of pages6
Volume735
DOIs
Publication statusPublished - 1 Feb 2013
Externally publishedYes
Event11th International Conference on Superplasticity in Advanced Materials, ICSAM 2012 - Albi, France
Duration: 3 Jul 20125 Jul 2012

Publication series

NameMaterials Science Forum
Volume735
ISSN (Print)02555476

Other

Other11th International Conference on Superplasticity in Advanced Materials, ICSAM 2012
CountryFrance
CityAlbi
Period3/7/125/7/12

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Keywords

  • FEM
  • Friction stir processing
  • Grain refinement
  • Layered microstructure
  • Superplasticity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Albakri, M., Mansoor, B., Albakri, A., & Khraisheh, M. (2013). Superplastic forming response of a friction stir processed Mg alloy sheet - A numerical approach. In Materials Science Forum (Vol. 735, pp. 192-197). (Materials Science Forum; Vol. 735). https://doi.org/10.4028/www.scientific.net/MSF.735.192