Simulation and practical verification of ECAP of magnesium alloy AZ91

• Autorzy: Kocich R. , Greger M. , Macháčková A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Equal channel angular pressing (ECAP) technique, which involves a simple large shear deformation during passage through two intersecting channels, was applied to the AZ91 Mg alloy to obtain an ultrafine- grained microstructure. Design/methodology/approach: For the stress and strain intensity investigation, there was used computer simulation. Findings: ECAP temperature was controlled to decrease with pass number for obtaining finer grains. Four pressings were conducted at 250°C, while the fifth pressing was conducted at 180°C. The degree of grain refinement and homogeneity of grain-size distribution increased with pass number. Practical implications: FEM simulation was examined on AZ 91 alloy by practical tests. Head reason for make this simulations is the possibility of exersise in praxe. Originality/value: The experimental result agreed well with that obtained from numerical analyses carried out based on the finite element method (FEM). This results can be used in next development of SPD methods.

Słowa kluczowe

EN

numerical techniques; ECAP; FEM simulation; microstructure

PL

techniki numeryczne; ECAP; równokanałowe wytłaczanie kątowe; symulacja MES; mikrostruktura

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 295--298
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Kocich R.

• Faculty of Metallurgy and Materials Engineering, VSB-Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava Poruba, Czech Republic

autor

Greger M.

• Faculty of Metallurgy and Materials Engineering, VSB-Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava Poruba, Czech Republic

autor

Macháčková A.

• Faculty of Metallurgy and Materials Engineering, VSB-Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava Poruba, Czech Republic

Bibliografia

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• [3] M. Bárcena, M.A. Pérez, J.P. Samperr, M. Lopez: Study of roundness on cylindrical bars turned of aluminium-cooper alloys UNS A 92024, AMME 2005 13th International conference p. 415-419 (ISBN 83-89728-11-7).
• [4] I.J. Beyerlein, R.A. Lebensohn, C.N.Tome: Ultrafine Grained Materials II, TMS, Seattle, 2002, p. 585
• [5] M.M. Avedesian, H. Baker (Eds.), ASM Specialty Handbook Magnesium and Magnesium Alloys, The Materials Information Society, Materials Park, OH, 1999
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• [9] L. Cížek, M. Greger, R. Kocich, S. Rusz, I. Juřička, L.A. Dobrzański, T. Tański: Structure characteristics after rolling of magnesium alloys.
• [10] K.N. Braszczyńska-Malik, Froven L., World wide congress on materials and manufacturing engineering and technology, qual channel angular pressing of magnesium AZ91 alloy.
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