Abstract
An Al-6 %Cu-0.4 %Zr alloy was processed by high-pressure torsion to produce an ultrafine-grained structure with a grain size of ~200 nm at the steady-state level where the hardness remains constant with straining. Tensile testing showed that a maximum elongation of ~530 % was attained at 673 K with an initial strain rate of 1 × 10−3 s−1. Evaluation of the strain-rate sensitivity and the activation energy for the deformation confirmed that grain boundary sliding through grain boundary diffusion is the rate-controlling process for the superplastic deformation.
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References
Barnes AJ (1994) Superplastic forming of aluminum alloys. Langdon TG (ed.) Superplastic in advanced materials (ICSAM-1994). Mater Sci Forum 170–172:701–714
Langdon TG (2009) Seventy-five years of superplasticity: historic developments and new opportunities. J Mater Sci 44:5998–6010
Sakai G, Horita Z, Langdon TG (2005) Grain refinement and superplasticity in an aluminum alloy processed by high-pressure torsion. Mater Sci Eng, A 393:344–351
Lee S, Furukawa M, Horita Z, Langdon TG (2003) Developing a superplastic forming capability in a commercial aluminum alloy without scandium or zirconium additions. Mater Sci Eng A342:294–301
Ota S, Akamatsu H, Neishi K, Furukawa M, Horita Z, Langdon TG (2002) Low-temperature superplasticity in aluminium alloys processed by equal-channel angular pressing. Mater Trans 43:2364–2369
Dobatkin SV, Bastarache EN, Sakai G, Fujita T, Horita Z, Langdon TG (2005) Grain refinement and superplastic flow in an aluminum alloy processed by high-pressure torsion. Mater Sci Eng A408:141–146
Horita Z, Langdon TG (2008) Achieving exceptional superplasticity in a bulk aluminum alloy processed by high-pressure torsion. Scripta Mater 58:1029–1032
Xu C, Dobatkin SV, Horita Z, Langdon TG (2009) Superplastic flow in a nanostructured aluminum alloy produced using high-pressure torsion. Mater Sci Eng A50:170–175
Yang X, Miura H, Sakai T (2002) Continuous dynamic recrystallization in a superplastic 7075 aluminum alloys. Mater Trans 43:2400–2407
Sherby OD, Wadsworth J (1989) Superplasticity recent-advances and future directions. Progress in Mater Sci 33:169–221
Kawasaki M, Langdon TG (2007) Principles of superplasticity in ultrafine-grained materials. J Mater Sci 42:1782–1796
Katsas S, Dashwood R, Grimes R, Jackson M, Todda G, Henein H (2007) Dynamic recrystallisation and superplasticity in pure aluminium with zirconium addition. Mater Sci Eng A444:291–297
Kaibyshev R, Kazyhanov V (1999) Texture and microstructure evolution during superplasticity of the metal matrix composite PM 2014 Al-20% Al2O3. Texture Microstruct 32:83–99
Kovacs-Csetenyi E, Torma T, Turmezey T, Chinh NQ, Juhasz A, Kovacs I (1992) Superplasticity of AlMgSi alloys. J Mater Sci 27:6141–6145
Eddahbi M, McNelley TR, Ruano OA (2001) The evolution of grain boundary character during superplastic deformation of an Al-6 Pct Cu-0.4 Pct Zr Alloy. Metall Mater Trans A32A:1093–1102
Figueiredo RB, Kawasaki M, Xu C, Langdon TG (2008) Achieving superplastic behavior in fcc and hcp metals processed by equal-channel angular pressing. Mater Sci Eng, A 493:104–110
Horita Z, Furukawa M, Nemoto M, Barnes AJ, Langdon TG (2000) Superplastic forming at high strain rates after severe plastic deformation. Acta Mater 48:3633–3640
Neishi K, Horita Z, Langdon TG (2003) Achieving superplasticity in ultrafine-grained copper: influence of Zn and Zr additions. Mater Sci Eng A352:129–135
Figueiredo RB, Langdon TG (2009) Strategies for achieving high strain rate superplasticity in magnesium alloys processed by equal-channel angular pressing. Scripta Mater 61:84–87
Garcia-Infanta JM, Zhilyaev AP, Sharafutdinov A, Ruano OA, Carreno FJ (2009) An evidence of high strain rate superplasticity at intermediate homologous temperatures in an Al–Zn–Mg–Cu alloy processed by high-pressure torsion. Alloys Compd 473:163–166
Edalati K, Toh S, Watanabe M, Horita Z (2012) In situ production of bulk intermetallic-based nanocomposites and nanostructured intermetallics by high-pressure torsion. Scripta Mater 66:386–389
Zhilyaev AP, Langdon TG (2008) Using high-pressure torsion for metal processing: fundamentals and applications. Progress in Mater Sci 53:893–979
Rentenberger C, Waitz T, Karnthaler HP (2004) HRTEM analysis of nanostructured alloys processed by severe plastic deformation. Scripta Mater 51:789–794
Edalati K, Horita Z (2010) Application of high-pressure torsion for consolidation of ceramic powders. Scripta Mater 63:174–177
Edalati K, Toh S, Ikoma Y, Horita Z (2011) Plastic deformation and allotropic phase transformations in zirconia ceramics during high-pressure torsion. Scripta Mater 65:974–977
Hasegawa H, Komura S, Utsunomiya A, Horita Z, Furukawa M, Nemoto M, Langdon TG (1999) Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions. Mater Sci Eng A265:188–196
Wadsworth J, Henshall CA, Pelton AR, Ward B Mater (1985) Superplastic properties of an AI–Cu–Li–Zr alloy. J Sci Lett 4:674–678
Malek P, Turba K, Cieslar M, Drbohlav I, Kruml T (2007) Structure development during superplastic deformation of an Al–Mg–Sc–Zr alloy. Mater Sci Eng, A 462:95–99
Furukawa M, Berbon PB, Horita Z, Nemoto M, Tsenev NK, Valiev RZ, Langdon TG (1998) Age hardening and the potential for superplasticity in a fine-grained Al–Mg–Li–Zr Alloy. Metall Mater Trans A 29A:169–177
Valiev RZ, Krasilnikov NA, Tsenev NK (1991) Plastic deformation of alloys with submicron-grained structure. Mater Sci Eng, A 137:35–40
Padmanabhan KA, Hirsch J, Lucke K (1991) Superplasticity-dislocation creep interactions in a coarse grained Al–Cu–Zr alloy. J Mater Sci 26:5309–5317
Malek P, Cieslar M, Jezek J (1999) Superplasticity in a powder metallurgy Al–Cu–Zr Alloy. Phys Stat Sol 175:467–480
Nieh TG, Wadsworth J, Sherby OD (1997) Superplasticity in metals and ceramics. Cambridge University Press, UK
Valiev RZ, Salimonenko DA, Tsenev NK, Berbon PB, Langdon TG (1997) Observation of high strain rate superplasticity in commercial aluminum alloys with ultrafine grain sizes. Scripta Mater 37:1945–1950
Xu C, Horita Z, Langdon TG (2007) The evolution of homogeneity in processing by high-pressure torsion. Acta Mater 55:203–212
Edalati K, Fujioka T, Horita Z (2008) Microstructure and mechanical properties of pure Cu processed by high-pressure torsion. Mater Sci Eng, A 497:168–173
Higashi K (1998) Advances and applications in high strain rate superplasticity. Met Mater Int 4:498–502
Langdon TG (1994) A unified approach to grain boundary sliding in creep and superplasticity. Acta Metal Mater 42:2437–2443
Mohamed FA (2011) Micrograin superplasticity: characteristics and utilization. Mater 4:1194–1223
Juhasz A, Chinh NQ, Tasnadi P, Kovacs I, Turmezey T (1987) Superplasticity of aluminium alloys grain-refined by zirconium. J Mater Sci 22:137–143
Mehrer H (1990) Numerical data and functional relationship in science and technology, diffusion in solid metals and alloys, vol. 26. Springer, Berlin
Bricknell RH, Bentley AP (1979) The activation energy for superplastic flow in Al-6Cu-0.4Zr. J Mater Sci 14:2547–2554
Acknowledgments
We are grateful to Mr. Shinsuke Nakashima for helpful assistance. One of the authors (AA) would like to thank Indonesian Government for a PhD scholarship through the Directorate of Higher Education Program (DGHE). This work was supported in part by the Light Metals Educational Foundation of Japan and in part by a Grant-in-Aid for Scientific Research from the MEXT, Japan, in Innovative Areas “Bulk Nanostructured Metals” 22102004.
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Alhamidi, A., Horita, Z. Application of high-pressure torsion to Al-6 %Cu-0.4 %Zr alloy for ultrafine-grain refinement and superplasticity. J Mater Sci 49, 6689–6695 (2014). https://doi.org/10.1007/s10853-014-8362-5
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DOI: https://doi.org/10.1007/s10853-014-8362-5