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Purpose: The present study investigates the effect of heat treatment parameters (temperature and time) on the tensile properties and fracture toughness of 6082 aluminium alloy. Design/methodology/approach: Tensile strength - Rm, yield strength - Rp0.2 and elongation - A of the 6082 aluminium alloy were determined by uniaxial tensile test at room temperature. Furthermore, the aged alloy was tested in tension in order to evaluate its fracture toughness. Therefore, according to ASTM standard tests were performed on fatigue precracked compact tension (KIc) and sharp-notched specimens ( ) in both the longitudinal and transverse orientation with respect to the rolling direction. Findings: The results show that the microstructure, mechanical properties and fracture toughness changes during artificial aging due to the precipitation strengthening process. Practical implications: This paper is the part of previous authors’ investigations which results in modification of the heat treatment parameters that may lead to the most favorable mechanical properties and fracture toughness of 6082 alloy. Originality/value: Paper contains a broad spectrum of experimental data including uniaxial tensile test and fracture toughness investigation based on two various technique and as well as a new ideas concerning aging parameters and their effect on the mechanical properties and ductility of the 6082 alloy.
Wydawca
Rocznik
Tom
Strony
162--170
Opis fizyczny
Bibliogr. 23 poz., rys., tabl.
Twórcy
autor
autor
autor
- Department of Materials Science, Rzeszow University of Technology, ul. W. Pola 2, 35-959 Rzeszów, Poland, mrowka@prz.edu.pl
Bibliografia
- [1] G. Biroli, G. Caglioti, L. Martini, G. Riontino, Precipitation kinetics of AA4032 and AA6082 a comparison based on DSC and TEM, Scripta Materialia 39/2 (1998) 197-203.
- [2] Y. Biroli, The effect of processing and Mn content on the T5 and T6 properties of AA6082 profiles, Journal of Materials Processing Technology 173 (2006) 84-91.
- [3] G. A. Edwards, K. Stiller, G.L. Dunlop, M.J. Couper, The precipitation sequence in Al-Mg-Si alloys, Acta Materialia 46/11 (1998) 3893-3904.
- [4] A. K. Gupta, D. J. Lloyd, S. A. Court, Precipitation hardening in Al-Mg-Si alloys with and without excess Si, Materials Science and Engineering A316 (2001) 11-17.
- [5] S. Karabay, M. Zeren, M. Yilmaz, Investigation of extrusion ratio effect on mechanical behaviour of extruded alloy AA- 6101 from the billets homogenised-rapid quenched and as-cast conditions, Journal of Materials Processing Technology 160 (2004) 138-147.
- [6] N. C. W. Kuijpers, W. H. Kool, P. T. G. Koenis, K. E. Nilsen, I. Todd, S. Van der Zwaag, Assessment of different techniques for quantification of α-Al(FeMn)Si and β-AlFeSi intermetallics in AA 6xxx alloys, Materials Characterization 49 (2003) 409-420.
- [7] Z. Li, A. M. Samuel, C. Rayindran, S. Valtierra, H. W. Doty, Parameters controlling the performance of AA319-type alloys: Part II. Impact properties and fractography, Materials Science and Engineering A367 (2004) 111-122.
- [8] W.F. Miao, D.E. Laughlin, Precipitation hardening in aluminum alloy 6022, Scripta Materialia 40/7 (1999) 873-878.
- [9] G. Mrówka-Nowotnik, J. Sieniawski, Influence of heat treatment on the microstructure and mechanical properties of 6005 and 6082 aluminium alloys, Proceedings of the 13th International Scientific Conference “Achievements in Mechanical and Materials Engineering” AMME’2005, Gliwice-Wisła, 2005, 447-450.
- [10] G. Mrówka-Nowotnik, J. Sieniawski, Influence of heat treatment on the micrustructure and mechanical properties of 6005 and 6082 aluminium alloys, Journal of Materials Processing Technology 162-163 (2005) 367-372.
- [11] G. Mrówka-Nowotnik, J. Sieniawski, A. Nowotnik, Tensile properties and fracture toughness of heat treated 6082 alloy, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 105-108.
- [12] G. Sha, K. O’Reilly, B. Cantor, J. Worth, R. Hamerton, Growth related phase selection in a 6xxx series wrought Al alloy, Materials Science and Engineering A304-306 (2001) 612-616.
- [13] R. A. Siddiqui, H. A. Abdullah, K. R. Al.-Belushi, Influence of aging parameters on the mechanical properties of 6063 aluminium alloy, Journal of Materials Processing Technology 102 (2000) 234-240.
- [14] M. Warmuzek, G. Mrówka-Nowotnik, J. Sieniawski, Influence of the heat treatment on the precipitation of the intermetallic phases in commercial AlMn1FeSi alloy, Journal of Materials Processing Technology 157-158 (2004) 624-632.
- [15] M. Warmuzek, K. Rabczak, J. Sieniawski, The course of the peritectic transformation in the Al-rich Al–Fe–Mn–Si alloys, Journal of Materials Processing Technology 162-163 (2005) 422-428.
- [16] M. Warmuzek, J. Sieniawski, A. Gazda, G. Mrówka, Analysis of phase formation in AlFeMnSi alloy with variable content of Fe and Mn transition elements, Materials Engineering 137 (2003) 821-824.
- [17] M. Wierzbińska, J. Sieniawski, Effect of morfology of eutectic silicon crystals on mechanical properties and cleavage fracture toughness of AlSi5Cu1 alloy, Journal of Achievements in Materials and Manufacturing Engineering 14 (2006) 31-36.
- [18] S. Zajac, B. Bengtsson, Ch. Jönsson, Influence of cooling after homogenization and reheating to extrusion on extrudability and final properties of AA 6063 and AA 6082 alloys, Materials Science Forum 396-402 (2002) 675-680.
- [19] ANSI/ASTM B645-78. Standard Practice for plane-strain fracture toughness testing of aluminium alloys.
- [20] ASTM E399-85. Standard method of test for plane-strain fracture toughness of metallic materials.
- [21] ASTM E602-78T. Tentative method for Sharp-notch tension testing with cylindral specimens.
- [22] PN-EN 10002-1+AC1. Metals. Standard method of tensile test at room temperature.
- [23] PN-87/H-04335. Standard method for plane-strain fracture toughness.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BOS2-0020-0001