Severe Plastic Deformation an Advanced Method for Nanostructuring Shape Memory Alloys
Keywords:
severe plastic deformation, ECAP, HPT
Abstract
Severe plastic deformation (SPD) is an advanced plastic deformation. In this process nanostructuring metals and alloys may be produced. Nanostructured shape memory alloys are associate with a very high strength, toughness, fatigue life and wear resistance. In recent, bulk nanostructured SMA are used for medicine advanced applications and smart micro devices. In this paper we present the concept and principles SPD. There are two distinct methods: Equal Channel Angular Pressing ECAP or Equal Cannel Angular Extrusion –ECAE and High Pressure Torsion – HPT. Also we present some results about nanostructuring a hard deformable shape memory alloy using a original HPT, and a improved ECAE device.
References
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[2]. J.G. Li, M. Umemoto, Y. Todaka, K. Tsuchiya, Role of strain gradient on the formation of nanocrystalline structure produced by severe plastic deformation, Journal of Alloys and Compounds 434-435 (2007) 290-293.
[3]. M. Hafoka, R. Pippana, Role of strain gradient on the formation of nanocrystalline structure produced by severe plastic deformation , Scripta Materialia 56 (2007) 757-760.
[4]. B. Kockar a, I. Karaman a,*, A. Kulkarni a, Y. Chumlyakov b, I.V. Kireeva, Effect of severe ausforming via equal channel angular extrusion on the shape memory response of a NiTi alloy, Journal of Nuclear Materials 361 (2007) 298-305.
[5]. S. Swaminathan,a T.L. Brown,b S. Chandrasekar,b T.R. McNelleya,* and W.D. Compton, Severe plastic deformation of copper by machining:Microstructure refinement and nanostructure evolution with strain, Scripta Materialia xxx (2007) xxx-xxx.
[6]. M. Delince´ a, Y. Bre´chet b, J.D. Embury c, M.G.D. Geers d, P.J. Jacques a, T. Pardoen, Structure–property optimization of ultrafine-grained dual-phase steels using a microstructure-based strain hardening model, Acta Materialia 55 (2007) 2337-2350.
[7]. A. Mishra , B.K. Kad , F. Gregori , M.A. Meyers ,Microstructural evolution in copper subjected to severe plastic deformation: Experiments and analysis, Acta Mater 55 (2007) 13-28.
[8]. A. Concustell, J. Sort, S. Surinach, A. Gebert, J. Eckert, A.P. Zhilyaev, M.D. Baro´, Severe plastic deformation of a Tibased nanocomposite alloy studied by nanoindentation, Intermetallics xx (2007) 1e8.
[9]. J.-P. Mathieu, S. Suwas, A. Eberhardt, L.S. T´oth , P. Moll, A new design for equal channel angular extrusion, Journal of Materials Processing Technology 173 (2006) 29-33.
[10]. S.C. Yoon, P. Quang, S.I. Hong, H.S. Kim, Die design for homogeneous plastic deformation during equal channel angular pressing, Journal of Materials Processing Technology 187-188, (2007) 46-50.
[11]. L. Kommel, I. Hussainova, O. Volobueva, Microstructure and properties development of copper during severe plastic deformation, Materials and Design xxx (2006) xxx-xxx.
[12]. Terence G. Langdon The principles of grain refinement in equal-channel angular pressing, Materials Science and Engineering A xxx (2006) xxx-xxx.
Published
2007-11-15
How to Cite
1.
GURAU G, GURAU C, TANASE D, DRUGESCU E. Severe Plastic Deformation an Advanced Method for Nanostructuring Shape Memory Alloys. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Nov.2007 [cited 19Apr.2024];30(2):111-5. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3160
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