Abstract
The production of refined grain materials by equal channel angular extrusion (ECAE) method has been the subject of numerous research programs over the past decades. In this study, the mechanical properties of commercially Al-6063 alloy deformed through ECAE process are investigated. The extrusion is performed up to six passes at a constant speed of 30 mm/min and a temperature of 200 °C. The grain size of the material reduced from 45to 2.8 μm after six passes. The extruded specimens were tested under quasi-static, medium, and high strain rate loadings using various testing machines. The results indicated that the tensile yield stress (YS) and the ultimate tensile strength (UTS) of the extruded specimens increased significantly after five passes of the ECAE process. The major improvement occurred after the first pass. For the subsequent passes, the properties kept improving but at lower rates. It was also shown that the tensile properties of the processed specimens are not influenced by the strain rate.
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References
Srinivasan R, Prabir K, Chaudhury P K, Cherukuri B, Han Q, Swenson D, Gros P (2006) Continuous severe plastic deformation processing of aluminum alloys. Master thesis Wright State University
Xia K, Wu X (2005) Back pressure equal channel angular consolidation of pure Al particles. Scr Mater 53:1225–1229
Azushima A, Kopp R, Korhonen A, Yang DY, Micari F, Lahoti GD, Groche P, Yanagimoto J, Tsuji N, Rosochowski A, Yanagida A (2008) Severe plastic deformation (SPD) processes for metals. CIRP Ann Manuf Technol 57:716–735
Hockauf M, Meyer LW, Musch D, Zillmann B (2008) Combining equal-channel angular extrusion (ECAE) and heat treatment for achieving high strength and moderate ductility in an Al-Cu alloy. Mater Sci Forum 584:685–690
Tham YW, Fu MW, Hng HH, Yong MS, Lim KB (2007) Study of deformation homogeneity in the multi-pass equal channel angular extrusion process. J Mater Process Technol 192–193:575–581
Gao L, Cheng X (2008) Microstructure and mechanical properties of Cu–10%Al–4%Fe alloy produced by equal channel angular extrusion. Mater Des 29:904–908
Valiev RZ, Langdon TG (2006) Principles of equal-channel angular pressing as a processing tool for grain refinement. Prog Mater Sci 51:881–981
Olejnik L, Rosochowski A (2005) Methods of fabricating metals for nano-technology. Bull Pol Acad 53:413–423
Basavaraj VP, Uday Ch, Prasanna Kumar TS (2008) Influence of friction in equal channel angular pressing—a study with simulation. Proceedings of the 17th International Conference of Metallurgy and Materials (Metal 2008), Czech Rep. 1-9
Kim DI, Yang DY, Yoon JW (2010) Microstructural evolution and its effect on mechanical properties of commercially pure aluminum deformed by ECAE (equal channel angular extrusion) via routes A and C. Mater Sci Eng A 527:7927–7930
Li S (2009) Texture evolution by shear on two planes during ECAP of a high-strength aluminum alloy. Scr Mater 60:356–358
Fu MW, Tham YW, Hing HH, Lim KB (2009) The grain refinement of Al-6061 via ECAE processing: deformation behavior, microstructure and property. Mater Sci Eng A 526:84–92
Serban N, Cojocaru VD, Butu M (2012) Mechanical behavior and microstructural development of 6063-T1 aluminum alloy processed by equal-channel angular pressing (ECAP): pass number influence. JOM 64:607–614
Heffner W (2008) Microstructure development in 6000 series aluminum alloys processed via equal channel angular extrusion. In College of Engineering, Florida State University
Khan AS, Meredith CS (2010) Thermo-mechanical response of Al 6061 with and without equal channel angular pressing (ECAP). Int J Plast 26:189–203
Chen YC, Huang YY, Chang CP, Kao PW (2003) The effect of extrusion temperature on the development of deformation microstructures in 5052 aluminum alloy processed by equal channel angular extrusion. Acta Mater 51:2005–2015
Rebhi MT, Njah N, Champion Y, Couzinié JP (2009) Characterization of aluminum processed by equal channel angular extrusion: effect of pressing route. Mater Charact 60:1489–1495
El-Danaf EA (2011) Mechanical properties, microstructure and texture of single pass equal channel angular pressed 1050, 5083, 6082 and 7010 aluminum alloys with different dies. Mater Des 32:3839–3853
Oleg VM, Jacob RB, Lathabai S (2010) Quantification of microstructure refinement in aluminum deformed by equal channel angular extrusion: route A vs. route BC in a 90°die. Scr Mater 63:20–23
Poortmans S, Duchêne L, Habraken AM, Verlinden B (2009) Modelling compression tests on aluminium produced by equal channel angular extrusion. Acta Mater 57:1821–1830
Majzoobi GH, Barton DC, Ramezani M (2007) Stress wave effects in the flying wedge high strain rate tensile testing device. J Strain Anal 42:1–11
Claves SR (2002) Characterization and analysis of the localized deformation of 6xxx aluminum alloy extrudates. Ms Thesis Lehigh University
Juan AL, Beatriz SP, Voort GFV (2014) Effect of processing steps on the mechanical properties and surface appearance of 6063 aluminum extruded products. Mater 7:4224–4242
Warmuzek M (2004) Aluminum-silicon casting alloys: an atlas of microfractographs. ASM International 39-44
Majzoobi GH (1990) Experimental and numerical studies of metal deformation and fracture at high strain rates. PhD Thesis University of Leeds, UK
Cojocaru VD, Serban N, Raducanu D, Cinca I, Saban R (2010) Microstructural observations of fracture surfaces for IA 6063-T1 ECAP processed aluminum alloy. U.P.B. Sci Bull 72:163–173
Kucukomeroglu T (2010) Effect of equal-channel angular extrusion on mechanical and wear properties of eutectic Al–12Si alloy. Mater Des 31:782–789
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Majzoobi, GH., Nemati, J., Pipelzadeh, M.K. et al. Characterization of mechanical properties of Al-6063 deformed by ECAE. Int J Adv Manuf Technol 84, 663–672 (2016). https://doi.org/10.1007/s00170-015-7709-7
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DOI: https://doi.org/10.1007/s00170-015-7709-7