Modeling of AA5083 Material-Microstructure Evolution During Butt Friction-Stir Welding

Abstract

A concise yet a fairly comprehensive overview of the friction stir welding (FSW) process is provided. This is followed by a computational investigation in which FSW behavior of a prototypical solution-strengthened and strain-hardened aluminum alloy, AA5083-H131, is modeled using a fully coupled thermo-mechanical finite-element procedure developed in our prior study. Particular attention is given to proper modeling of the welding work-piece material behavior during the FSW process. Specifically, competition and interactions between plastic-deformation and dynamic-recrystallization processes are considered to properly account for the material-microstructure evolution in the weld nugget zone. The results showed that with proper modeling of the material behavior under high-temperature/severe-plastic-deformation conditions, significantly improved agreement can be attained between the computed and measured post-FSW residual stress and material-strength distribution results.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2010
Accession Number
ADA581745

Entities

People

  • Bryan A. Cheeseman
  • C.‐F. Yen
  • G. Arakere
  • H. V. Yalavarthy
  • Mica Grujicic
  • Temple He

Organizations

  • Clemson University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aluminum
  • Aluminum Alloys
  • Crystal Structure
  • Engineering
  • Finite Element Analysis
  • Friction Stir Welding
  • Heat Transfer
  • Materials
  • Materials Engineering
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Residual Stress
  • Shear Strength
  • Shear Stresses
  • Spatial Distribution
  • Strain Hardening

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Manufacturing Engineering.
  • Metallurgy