Numerical modelling of microstructure evolution in Friction Stir Welding (FSW)'

Autor: Miguel Cervera, Michele Chiumenti, Narges Dialami
Přispěvatelé: Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. DECA - Grup de Recerca del Departament d'Enginyeria Civil i Ambiental
Jazyk: angličtina
Rok vydání: 2019
Předmět:
lcsh:TN1-997
0209 industrial biotechnology
Engineering
Civil
Materials science
Logarithm
Friction stir welding
Constitutive equation
Engineering
Multidisciplinary
Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC]
02 engineering and technology
Welding
law.invention
020901 industrial engineering & automation
law
General Materials Science
Engineering
Ocean
Composite material
Engineering
Aerospace
Engineering
Biomedical
lcsh:Mining engineering. Metallurgy
grain size
FSW
Metals and Alloys
Strain rate
021001 nanoscience & nanotechnology
Microstructure
Computer Science
Software Engineering
Soldadura per fricció
Grain size
Engineering
Marine
Material flow
Engineering
Manufacturing
Engineering
Mechanical
material tracing
microhardness
Engineering
Industrial
0210 nano-technology
Zdroj: Recercat. Dipósit de la Recerca de Catalunya
instname
Metals, Vol 8, Iss 3, p 183 (2018)
Scipedia Open Access
Scipedia SL
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Metals; Volume 8; Issue 3; Pages: 183
Popis: This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination of an apropos kinematic framework for the local simulation of FSW processes and a material particle tracing technique for tracking the material flow during the weld. The resulting grain size and microhardness values are validated with experimental observations from an identical processed sample. A Sheppard-Wright constitutive relation is adopted to describe the mechanical behavior of AZ31 Mg alloy considered in this work. The strain rate and temperature histories obtained from the numerical model are stored on the tracers. The relationship among the grain size, microhardness, strain rate, and temperature is obtained using Zener-Hollomon parameter and Hall-Petch relationship. A linear description relates the logarithm of average grain size to the logarithm of Zener-Hollomon parameter. The relationship between microhardness and average grain size stands away from the linear trend.
Databáze: OpenAIRE
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