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http://dx.doi.org/10.5228/KSPP.2008.17.1.013

Effect of Equal Channel Angular Pressing Temperature on the Fracture and Mechanical Properties of Magnesium  

Yoon, S.C. (충남대학교 대학원 나노소재공학과)
Bok, C.H. (충남대학교 대학원 나노소재공학과)
Kwak, E.J. (충남대학교 대학원 나노소재공학과)
Jeong, Y.G. (한국 생산기술연구원)
Kim, T.S. (한국 생산기술연구원)
Kim, H.S. (충남대학교 대학원 나노소재공학과)
Publication Information
Transactions of Materials Processing / v.17, no.1, 2008 , pp. 13-18 More about this Journal
Abstract
Mg and Mg alloys are promising materials for light weight high strength applications. In this paper, grain refinement of pure Mg using severe plastic deformation was tried to enhance the mechanical properties of the hard-to-deform metallic material. The microstructure and the mechanical properties of Mg processed by equal channel angular pressing(ECAP) at various processing temperatures were investigated experimentally. ECAP with channel angle of $90^{\circ}$ and corner angle of $0^{\circ}$ was successful at $300^{\circ}C$ without fracture of the samples during the processing. The hardness of the ECAP processed Mg decreased with increasing ECAP processing temperature. The effect of temperature on the hardness and microstructure of the ECAP processed Mg were explained by the dislocation glide in the basal plane and non-basal slip systems and by the dynamic recrystallization and recovery.
Keywords
Magnesium; Equal Channel Angular Pressing; Severe Plastic Deformation; Grain Refinement; Processing Temperature; Fracture;
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1 V. M. Segal, 1995, Materials processing by simple shear, Mater. Sci. Eng. A, Vol. 197, pp. 157-164   DOI   ScienceOn
2 M. Mabuchi, H. Iwahashi, K. Yanase, K. Higashi, 1997, Low temperature superplasticity in an AZ91 magnesium alloy processed by ECAE, Scripta Mater., Vol. 36, pp. 681-686   DOI   ScienceOn
3 S. Ohsaki, S. Kato, N. Tsuji, T. Ohkubo, K. Hono, 2007, Bulk mechanical alloying of Cu-Ag and Cu/Zr two-phase microstructures by accumulative roll-bonding process, Acta Mater., Vol. 55, pp. 2885-2895   DOI   ScienceOn
4 R. Z. Valiev, R. K. Islamgaliev, I. V. Alexandrov, 2000, Bulk nanostructured materials from severe plastic deformation, Prog. Mater. Sci., Vol. 45, pp. 103-189   DOI   ScienceOn
5 D. H. Shin, J. J. Park, S. Y. Chang, Y. K. Lee, K. T. Park, 2002, Ultrafine grained low carbon steels fabricated by equal channel angular pressing: microstructures and tensile properties, ISIC Int. Vol. 42, pp. 1490-1496   DOI
6 Y. C. Chen, Y. Y. Huang, C. P. Chang, P. W. Kao, 2003, The effect of extrusion temperature on the development of deformation microstructures in 5052 aluminium alloy processed by equal channel angular extrusion, Acta Mater., Vol. 51, pp. 2005-2015   DOI   ScienceOn
7 J. Koike, 2003, New deformation mechanism in fine grain Mg alloys, Mater. Sci. Forum, Vol. 419- 422, pp. 189-194
8 S. Y. Chang, H. Tezuka, A. Kamio, 1997, Mechanical properties and structure of ignitionproof Mg-Ca-Zr alloys produced by squeeze casting, Mater. Trans., Vol. 38, pp. 526-535   DOI
9 Y. Iwahashi, J. Wang, Z. Horita M. Nemoto, T. G. Langdon, 1996, Principle of equal-channel angular pressing for the processing of ultra-fine grained materials, Scripta Mater., Vol. 35, pp. 143-146   DOI   ScienceOn
10 Y. Wang, M. Chen, F. Zhou, E. Ma, 2003, High tensile ductility in a nanostructured metal, Nature, Vol. 419, pp. 912-915   DOI   ScienceOn
11 M. Chandrasekaran, Y. M. S. John, 2004, Effect of materials and temperature on the forward extrusion of magnesium alloys, Mater. Sci. Eng. A, Vol. 381, pp. 308-319   DOI   ScienceOn
12 H. Liu, Y. Chen, Y. Tang, S. Wei, G. Niu, 2007,Tensile and indentation creep behavior of Mg-5% Sn and Mg-5% Sn-2% Di alloys, Mater. Sci. Eng. A, Vol. 464, pp. 124-128   DOI   ScienceOn
13 Jager, P. Lukac, V. Gartnerova, J. Bohlen, K. U. Kainer, 2004, Tensile properties of hot rolled AZ31 Mg alloy sheets at elevated temperatures J. Alloys Compounds, Vol. 378, pp. 184-187   DOI   ScienceOn
14 S. Y. Chang, S. W. Lee, K.M. Kang, S. Kamado, Y. Kojima, 2004, Improvement of mechanical characteristic in severe plastic deformed Mg alloys, Mater. Trans., Vol. 45, pp. 488-492   DOI   ScienceOn
15 A. Yamashita, Z. Horita, T. G. Langdon, 2001, Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation, Mater. Sci. Eng. A, Vol. 300, pp. 142-147   DOI   ScienceOn
16 S. R. Agnew, J. A. Horton, T. M. Lillo, D. W. Brown, 2004, Enhanced ductility in strongly textured Mg produced by equal channel angular processing, Scripta Mater., Vol. 50, pp. 377-381   DOI   ScienceOn
17 D. W. Brown, S. R. Agnew, M. A. M. Bourke, T. M. Holden, S. C. Vogel, C. N. Tome, 2005, Internal strain and texture evolution during deformation twinning in magnesium, Mater. Sci. Eng. A, Vol. 399, pp. 1-12   DOI   ScienceOn
18 S. R. Agnew, P. Mehrotra, T. M. Lillo, G. M. Stoica, P. K. Liaw, 2005, Texture evolution of five wrought magnesium alloys during route a equal channel angular extrusion: Experiment and simulation, Acta Mater., Vol. 53, pp. 3135-3146   DOI   ScienceOn
19 H. S. Kim, M. H. Seo, S. I. Hong, 2000, On the die corner gap formation in equal channel angular pressing, Mater. Sci. Eng. A, Vol. 291, pp. 86-90   DOI   ScienceOn