Thermal Stability of AA1050 Aluminum Alloy after Equal Channel Angular Pressing

• Autorzy: Koprowski P. , Bogucki R. , Bieda M. , Kawałko J. , Sztwiertnia K.

Identyfikatory

DOI

10.1515/amm-2017-0116

• Języki publikacji: EN

Abstrakty

EN

The annealing behavior of AA1050 aluminum alloy deformed by equal-channel angular pressing (ECAP) was studied experimentally. The material was subjected to extrusion through die with channels intersecting at an 90° angle. Samples were pressed for up to 8 passes using route BC, then cut into slices and subsequently annealed for 1 hour at temperatures from 100°C to 350°C. Hardness measurements were performed on each slice. Microstructure of material was analyzed in the longitudinal section by means of Electron Backscatter Diffraction system in a scanning electron microscope (EBSD/SEM). From the obtained sets of Kikuchi diffraction patterns orientation maps and Image Quality maps were determined. Grain size, disorientation distributions and crystallographic texture were also estimated. ECAP caused significant improvement of hardness, with stabilization after 4 passes. Refinement of microstructure was obtained with the increasing amount of passes. Material properties were stable during annealing at temperatures lower than 150°C. Annealing at higher temperatures caused a decrease in hardness corresponding to an increase of the grain size.

Słowa kluczowe

EN

ECAP; hardness; EBSD; texture; recrystallization

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 2A
• Strony: 777--786
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Koprowski P.

• Institute of Metallurgy and Materials Science, Polish Academy of Science, Reymonta 25, 30-059 Cracow, Poland

autor

Bogucki R.

• Institute of Materials Science, Cracow University of Technology, Al. Jana Pawła II 37, 31-864 Cracow, Poland

autor

Bieda M.

• Institute of Metallurgy and Materials Science, Polish Academy of Science, Reymonta 25, 30-059 Cracow, Poland

autor

Kawałko J.

• Institute of Metallurgy and Materials Science, Polish Academy of Science, Reymonta 25, 30-059 Cracow, Poland

autor

Sztwiertnia K.

• Institute of Metallurgy and Materials Science, Polish Academy of Science, Reymonta 25, 30-059 Cracow, Poland

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).