ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this paper, a deformation test method to reproduce, on a laboratory scale, themicrostructure evolution of aluminium alloys occurring during industrial forming processes with alimited number of tests is presented. A hot inverse extrusion setup was designed in order togenerate, inside one single specimen, a wide range of strains at a given temperature and ram speed.Two commercial aluminium alloys (AA6060 and AA6082) were investigated at different processingconditions (temperatures and forming rates). Detailed optical microstructures were examined andgrain sizes were determined at different spots of each specimen. Thermo-mechanical coupledsimulations of the deformation tests were performed using the DEFORM 3D FEM code. On thebasis of recrystallization equations, the distributions of strains, strain rates and temperatures werecorrelated to the grain sizes measured through linear regression. Finally, FEM simulations were runagain with the established recrystallization model, and the results were compared with theexperimental data
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.367.107.pdf
