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Numerical analyses of material flows and thermal processes during friction plug welding for AA2219 aluminum alloy
- Source :
- Journal of Materials Processing Technology. 278:116466
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- A coupled thermo-mechanical model is developed for friction plug welding (FPW) process of AA2219 aluminum alloy, which is validated by the experimental results of the torque and temperature history. Both the deformation of plug and base metal are considered in this model. It is concluded that weak-bonding and unbonding is caused by the poor interface normal force and material flow based on the simulational and experimental results. Significant inhomogeneity in distribution of temperature, effective strain and effective stress is observed along the thickness direction of FPW joint, resulting in the inhomogeneity of microstructure and mechanical property. The peak temperature of bonding interface can reach 508 °C, which is 79% of the melting point of base metal. Higher welding force and rotational speed could promote material flow and improve interface normal force, which is beneficial to obtaining better connection.
- Subjects :
- 0209 industrial biotechnology
Normal force
Materials science
Effective stress
Metals and Alloys
Rotational speed
02 engineering and technology
Welding
Microstructure
Industrial and Manufacturing Engineering
Computer Science Applications
law.invention
Material flow
020303 mechanical engineering & transports
020901 industrial engineering & automation
0203 mechanical engineering
law
Modeling and Simulation
Ceramics and Composites
Deformation (engineering)
Composite material
Spark plug
Subjects
Details
- ISSN :
- 09240136
- Volume :
- 278
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Processing Technology
- Accession number :
- edsair.doi...........0150c2d5e87bef023d455702df9209b0