Relationship between microstructure and macroscopic properties of ultra-fine grained materials made by severe plastic deformation  Page description

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Details of project

  
Identifier
42714
Type K
Principal investigator Krállics, György
Title in Hungarian Nagymértékű képlékeny alakítással előállított ultrafinom szemcséjű anyagok mikroszerkezetének és makroszkopikus tulajdonságainak kapcsolata
Title in English Relationship between microstructure and macroscopic properties of ultra-fine grained materials made by severe plastic deformation
Panel Engineering, Metallurgy, Architecture and Transport Sciences
Department or equivalent Department of Materials Science and Engineering (Budapest University of Technology and Economics)
Participants Alexandrov, Igor
Budilov, Igor
Détári, Péter
Dobránszky, János
Gubicza, Jenő
Kivivuori, Seppo
Mészáros, István
Németh, Árpád
Palotás, Béla
Raab, Gueorgy
Szabadíts, Ödön
Timo, Saarinen
Törköly, Tamás
Valiev, Ruslan Z.
Starting date 2003-01-01
Closing date 2007-04-30
Funding (in million HUF) 17.900
FTE (full time equivalent) 0.00
state closed project





 

Final report

  
Results in Hungarian
a. Tömbi nanoszerkezetű anyagok vizsgálata során kísérleti és gyártási tapasztalatot szereztünk fémekkel és ötvözeteikkel kapcsolatban. b. A nanoszerkezet előállítása során mechanikai, finomszerkezeti röntgen és elektronmikroszkópos vizsgálatokkal meghatároztuk az anyag makroszkópikus és mikroszkópikus jellemzőit. Konstitutív egyenletet dolgoztunk ki az anizotróp viselkedés leírására. c. A nanoszerkezetű anyagok előállítását követően vizsgáltuk a technológiai feldolgozhatóságukat a továbbalakítás, a forgácsolás és a hegesztés területén. d. A gyártási folyamatok mechanikai sémájának feltárása érdekében végeselemes modelleket készítettünk a különböző intenzív képlékenyalakítási eljárásokról. Kontinuumechanikai alapon elemeztük a nanoszerkezet kialakulásának feltételeit. e. A kutatások megalapozták a különleges tulajdonsággal rendelkező tömbi nanoszerkezetű anyagok laboratóriumot meghaladó, félüzemi előállítását.
Results in English
a. During the investigation of bulk nanostructured materials we have got experiences in experimental and production methods for metals and alloys. b. Using X-ray diffraction, electron microscopy and mechanical measurements, the macro- and microscopical properties have been evaluated. New constitutive equation has been formulated to describe the anisotropic behavior of the materials. c. After production of nanostructured materials, the further deformation, cutting and welding was tested . d. A FEM method was developed for modeling the technological process of severe plastic deformation. Continuum mechanical methods have been used to describe the conditions necessary for processing nanostructured materials. e. These researches made possible to produce nanostructured materials not only in laboratory conditions but even with real semi-production methods.
Full text http://real.mtak.hu/759/
Decision
Yes





 

List of publications

  
Gy.Krallics, I.N.Budilov, I.V.Alexandrov, G.I.Raab, V.S.Zhernakov, R.Z.Valiev: Computer simulation of Equal Channel Angular Pressing of tungsten by means of the Finite element method., Nanomaterials by Severe Plastic Deformation, Proceedings of the Conference NANOSPD2,pp.183-189., 2004
Gy.Krallics,Z.Szeles,I.P.Semenova,T.V.Dotsenko,I.V.Alexandrov: Experimental Investigation of Al-Mg-Si Alloy Subjected to Equal-Channel Angular Pressing, Nanomaterials by Severe Plastic Deformation, Proceedings of the Conference NANOSPD2,pp.183-189., 2004
Gy. Krallics, D. Malgin, G.I. Raab, I.V. Alexandrov: Manufacturing of Long Specimens by ECAP, Ultrafine Grained Materials III, Proceedings of Symposium held during 2004 TMS Annual Meeting in Charlotte, USA, March 14-18, pp.179-185., 2004
J. Gubicza, N. H. Nam, L. Balogh, R. J. Hellmig, V. V. Stolyarov, Y. Estrin and T. Ungár: Microstructure of severely deformed metals determined by X-ray peak, J. Alloys and Compounds ,378 pp. 248-252., 2004
J. Gubicza, Gy. Krallics, I. Schiller and D. Malgin: Evolution of the Microstructure of Al 6082 Alloy during Equal-Channel Angular Pressing, Materials Science Forum Vols.473-474 pp. 453-458., 2005
Gy.Krallics, D.Malgyn, A.Fodor: Experimental Investigations of the Al 6082 Alloy Subjected to Equal-Channel Angular Pressing, Materials Science Forum Vols. 473-474 pp.129-134, 2005
Gy.Krallics, M.Horváth, Á.Fodor: Influence of ECAP Routes on Mechanical Properties of a Nanocrystalline Aluminium Alloy, Periodica Politechnica, Mechanical Engineering Vol.48 No 2. pp.145-150, 2004
Gy.Krallics, J.G.Lenard: An examination of the accumulative roll-bonding process, Journal of Materials Processing Technology 152, pp. 154-161, 2004
T. Ungár, G. Tichy, J. Gubicza, R. J. Hellmig: Correlation between subgrains and coherently-scattering-domains, Powder Diffraction 20, 366-375., 2005
Gy .Krallics, Z. Szeles, D.Malgyn: Finite Element Simulation of Multi-Pass Equal Channel Angular Pressing, Materials Science Forum, Vols.414-415,pp.431-437., 2003
L. Balogh, J. Gubicza, R. J. Hellmig, Y. Estrin and T. Ungár: Thermal stability of the microstructure of severely deformed copper, Z. Kristallographie, Suppl. 23 , 381-386, 2006
J. Gubicza, N. Q. Chinh, T. G. Langdon, T. Ungár: Microstructure and strength of metals processed by severe plastic deformation, Ultrafine Grained Materials IV. Edited by Y.T. Zhu, T.G. Langdon, Z. Horita, M.J. Zehetbauer, S.L. Semiatin, and T.C. Lowe. TMS pp. 231-236, 2006
I.V. Alexandrov, G.Krallics, J. Bonarski, M.V. Zhilina: Experimental study and computer modeling of high pressure torsion., Ulrafine Grained Materials IV. Edited by Y.T. Zhu, T.G. Langdon, Z. Horita, M.J. Zehetbauer, S.L.Semiatin and T.C. Lowe. TMS, pp. 195-202., 2006
G.Krallics, A Fodor, A. Agena: Anisotropic mechanical properties of ultra-fine grained aluminium alloy., Ulrafine Grained Materials IV. Edited by Y.T. Zhu, T.G. Langdon, Z. Horita, M.J. Zehetbauer, S.L.Semiatin and T.C. Lowe. TMS, pp. 395-400., 2006
G.Krallics, D.Malgin: Finite element simulation of equal channel angular pressing, Severe plastic deformation :Towards bulk production of nanostructured materials, pp. 445-464, 2005
K. Máthis, J. Gubicza, N. H. Nam: Microstructure and mechanical behavior of AZ91 Mg-alloy processed by Equal Channel Angular Pressing, J. Alloys and Comp. 394, 194-199., 2005
Alexandrov,I.N. Budilov, G. Krallics, H.S. Kim, S.C. Yoon, A.A. Smolyakov, A.I.: Simulation of Equal-Channel Angular Extrusion Pressing, Materials Science Forum Vols. 503-504 (January 2006) pp. 201-208, 2006
J. Gubicza , N.Q. Chinh, Gy. Kralllics c, I. Schiller a, T. Ungar: Microstructure of ultrafine-grained fcc metals produced by severe plastic deformation, Current Applied Physics 6 (2006) 194–199, 2006
V. Latysh, Gy. Krallics, I. Alexandrov , A. Fodor: Application of bulk nanostructured materials in medicine, Current Applied Physics 6 (2006) 262–266, 2006



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