Tensile properties and fracture toughness of heat treated 6082 alloy

• Autorzy: Mrówka-Nowotnik G. , Sieniawski J. , Nowotnik A.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The main task of this work was to study the effect of the precipitation hardening on the mechanical properties and fracture toughness of 6082 aluminium alloy. Design/methodology/approach: The mechanical (Rm and Rp0.2) and plastic (A,Z) properties of the examined alloy were evaluated by uniaxial tensile test at room temperature. Additionally the artificially aged alloy has been tested in tension in order to determine its fracture toughness. Thus, standard ASTM tests were performed on fatigue precracked compact tension (KIc) and sharp-notched specimens (Rmk) 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

Słowa kluczowe

EN

metallic alloys; fracture mechanics; mechanical properties; heat treatment

PL

stopy metali; mechanika pękania; właściwości mechaniczne; obróbka cieplna

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 17, nr 1-2
• Strony: 105--108
• Opis fizyczny: Bibliogr. 13 poz., rys., tab., wykr.

Twórcy

autor

Mrówka-Nowotnik G.

• Department of Materials Science, Rzeszów University of Technology, ul. W. Pola 2, 35-959 Rzeszow, Poland

autor

Sieniawski J.

• Department of Materials Science, Rzeszów University of Technology, ul. W. Pola 2, 35-959 Rzeszow, Poland

autor

Nowotnik A.

• Department of Materials Science, Rzeszów University of Technology, ul. W. Pola 2, 35-959 Rzeszow, Poland

Bibliografia

• [1] 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.
• [2] G. Mrówka-Nowotnik, J. Sieniawski, Influence of heat treatment on the microstructure and mechanical properties of 6005 and 6082 aluminium alloys, Proc. Int. Conf. "Achievements in Mechanical & Materials Engineering", Gliwice-Wisła (2005), 447-450
• [3] 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 Engieneering, 137 (2003) 821-824
• [4] 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.
• [5] 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.
• [6] 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.
• [7] 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.
• [8] 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.
• [9] PN-EN 10002-1+AC1. Metals. Standard method of tensile test at room temperature.
• [10] ASTM E602-78T. Tentative method for Sharp-notch tension testing with cylindral specimens.
• [11] ASTM E399-85. Standard method of test for plane-strain fracture toughness of metallic materials.
• [12] PN-87/H-04335. Standard method for plane-strain fracture toughness.
• [13] Z. Kędzierski: Role of second-phase particles in the fracture of sites with narrow plastic zone, Metallurgy and Foundry. Book 117. Wyd. AGH, Kraków 1998.