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http://dx.doi.org/10.12989/sem.2014.52.5.957

Effects of Constrained Groove Pressing (CGP) on the plane stress fracture toughness of pure copper  

Mohammadi, Bijan (School of Mechanical Engineering, Iran University of Science & Technology)
Tavoli, Marzieh (School of Mechanical Engineering, Iran University of Science & Technology)
Djavanroodi, Faramarz (School of Mechanical Engineering, Iran University of Science & Technology)
Publication Information
Structural Engineering and Mechanics / v.52, no.5, 2014 , pp. 957-969 More about this Journal
Abstract
Among severe plastic deformation methods, groove pressing is one of the prominent techniques for producing ultra-fine grained sheet materials. This process consists of imposing repetitive severe plastic deformation on the plate or sheet metals through alternate pressing. In the current study, a 2 mm pure Cu sheet has been subjected to repetitive shear deformation up to two passes. Hardness and tensile yield and ultimate stress were obtained after groove pressing. Fracture toughness tests have been performed and compared for three conditions of sheet material namely as received (initial annealed state), after one and two passes of groove pressing. Results of experiments indicate that a decrease in the values of fracture toughness attains as the number of constrained groove pressing (CGP) passes increase.
Keywords
Constrained Groove Pressing (CGP); copper; fracture toughness;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Furukawa, M., Horita, Z. and Langdon, T.G. (2001a), "Substructures of deformation twins and twin intersections in a Ti-45Al-8Nb-2.5Mn alloy heavily deformed at room temperature", Mater. Sci. Eng. A, 299, 267-274.   DOI   ScienceOn
2 Agnew, S.R. and Weertman, J.R. (1998), "Cyclic softening of ultrafine grain copper", Mater. Sci. Eng. A, 244, 145-153.   DOI   ScienceOn
3 Anderson, T.L. (1994), Fracture mechanics: fundamentals and application, 2nd Edition, CRC Press, New York, Washington D.C., USA.
4 Furukawa, M., Horita, Z. and Langdon, T.G. (2001b), "Application of equal-channel angular pressing", J. Mater. Res., 16, 583-589.   DOI   ScienceOn
5 Iwahashi, Y., Horita, Z., Nemoto, M. and G Langdon, T. (1998), "The process of grain refinement in equalchannel angular pressing", Acta Mater., 46(9), 3317-3331.   DOI   ScienceOn
6 Khodabakhshi, F., Kazeminezhad, M. and Kokabi, A.H. (2010), "Constrained groove pressing of low carbon steel: Nano-structure and mechanical properties", Mater. Sci. Eng. A, 527, 4043-4049.   DOI   ScienceOn
7 Krishnaiah, A., Chakkingal, U. and Venugopal, P. (2005), "Applicability of the groove pressing technique for grain refinement in commercial purity copper", Mater. Sci. Eng. A, 410, 337-340.
8 Krishnaiah, A., Chakkingal, U. and Venugopal, P. (2005), "Production of ultrafine grain sizes in aluminum sheets by severe plastic deformation using the technique of groove pressing", Mater. Sci., 52, 1229-1233.
9 Kulyasovaa, O., Islamgalieva, R., Minglerb, B. and Zehetbauerb, M. (2009), "Microstructure and fatigue properties of the ultrafine-grained AM60 magnesium alloy processed by equal-channel angular pressing", Mater. Sci. Eng. A, 503, 176-180.   DOI   ScienceOn
10 Kunz, L., Lukas, P. and Svoboda, M. (2005), "Fatigue notch sensitivity of ultrafine- grained copper", Mater. Sci. Eng. A, 391, 337-341.   DOI   ScienceOn
11 Lee, J.W. and Park, J.J. (2002), "Numerical and Experimental Investigations of Constrained Groove Pressing and Rolling for Grain Refinement", J. Mater. Proc. Technol., 130-131, 208-213.   DOI   ScienceOn
12 Mourad, A.H.I., Alghafri, M.J., Abu Zeid, O.A. and Maiti, S.K. (2005), "Experimental investigation on ductile stable crack growth emanating from wire-cut notch in AISI 4340 steel", Nucl. Eng. Des., 235, 637-647.   DOI   ScienceOn
13 Niranjan, G.G. and Chakkingal, U. (2010), "Deep drawability of commercial purity aluminum sheets processed by groove pressing", J. Mater. Proc. Technol., 210(11), 1511-1516.   DOI   ScienceOn
14 Lee, S.H., Saito, Y., Utsunomiya, H., Tsuji, N. and Sakai, T. (2003), "Ultra grain refinement of commercial purity aluminum by a multi-stack ARB process", Mater. Tran., 44(7), 1376-1381.   DOI   ScienceOn
15 Liao, F., Wang, W. and Chen, Y. (2012), "Parameter calibrations and application of micromechanical fracture models of structural steels", Struct. Eng. Mech., 42(2), 153-174.   DOI   ScienceOn
16 Morattab, S., Ranjbar, K. and Reihanian, M. (2011), "On the mechanical properties and microstructure of commercially pure Al fabricated by semi-constrained groove pressing", Mater. Sci. Eng. A, 528, 6912-6918.   DOI   ScienceOn
17 Park, K.T., Kwon, H.J., Kim, W.J. and Kim, Y.S. (2001), "Microstructural characteristics and thermal stability of ultrafine grained 6061 Al alloy fabricated by accumulative roll bonding process", Mater. Sci. Eng. A, 316, 145-152.   DOI   ScienceOn
18 Patlan, V., Vinogradov, A., Higashi, K. and Kitagawa, K. (2001), "Overview of fatigue properties of fine grain 5056 Al-Mg alloy processed by equal-channel angular pressing", Mater. Sci. Eng. A, 300, 171-182.   DOI   ScienceOn
19 Peng, K., Zhang,Y., Shaw, L.L. and Qian, K.W. (2009), "Microstructure dependence of a Cu-38Zn alloy on processing conditions of constrained groove pressing", Acta Mater., 57(18), 5543-5553.   DOI   ScienceOn
20 Qin, E.W., Lu, L., Tao, N.R. and Lu, K. (2009). "Enhanced fracture toughness of bulk nanocrystalline Cu with embedded nanoscale twins", Scripta Mater., 60, 539-542.   DOI   ScienceOn
21 Xua, C., Wang, Q., Zheng, M., Li, J., Huanga, M., Jia, Q., Zhua, J., Kunz, L. and Buksa, M. (2008), "Fatigue behavior and damage characteristic of ultra-fine grain low-purity copper processed by equalchannel angular pressing (ECAP)", Mater. Sci. Eng. A, 475, 249-256.   DOI   ScienceOn
22 Rafizadeh, E., Mani, A. and Kazeminezhad, M. (2009), "The effects of intermediate and post-annealing phenomena on the mechanical properties and microstructure of constrained groove pressed copper sheet", Mater. Sci. Eng. A, 515, 162-168.   DOI   ScienceOn
23 Rajinikanth, V., Arora, G., Narasaiaha, N. and Venkateswarlu, K. (2008), "Effect of repetitive corrugation and straightening on Al and Al-0.25Sc alloy", Mater. Lett., 62(2), 301-304.   DOI   ScienceOn
24 Shin, D.H., Park, J.J., Kim, Y.S. and Park, K.T. (2002), "Constrained groove pressing and its application to grain refinement of aluminum", Mater. Sci. Eng. A, 328, 98-103.   DOI   ScienceOn
25 Zhang, Z.F., Wu, S.D., Li, Y.J., Liu, S.M. M. Wang, Z.G. (2005), "Cyclic deformation and fatigue properties of Al-0.7 wt.% Cu alloy produced by equal channel angular pressing", Mater. Sci. Eng. A, 412, 279-286.   DOI   ScienceOn
26 Zrnika, J., Kovarik, T., Novy, Z.M. and Cieslar, M. (2009), "Ultrafine-grained structure development and deformation behavior of aluminum processed by constrained groove pressing", Mater. Sci. Eng. A, 503, 126-129.   DOI   ScienceOn
27 Aliha, M.R.M., Heidari-Rarani, M., Shokrieh, M.M. and Ayatollahi, M.R. (2012) "Experimental determination of tensile strength and KIc of polymer concretes using semi-circular bend (SCB) specimens.", Struct. Eng. Mech., 43(6), 823-834.   DOI   ScienceOn