Optimization of the heat and mechanical treatment of the Al-Zn-Mg-Li alloy

• Autorzy: Stegliński M. , Kaczmarek Ł. , Świniarski J. , Stachurski W. , Sawicki J.
• Języki publikacji: EN

Abstrakty

EN

In terms of high strength in relation to mass the alloys of aluminium – lithium find more and more use mainly in aircraft industry like in spacecraft. At present intensive investigations are carried out in aim of use of Al – Li in automotive industry in particular to components subject to fatigue wear. It could contribute to replace transmission’s elements made from traditional materials by aluminium - lithium alloys. However low resistance to wear due to forming of thin Al2O3 layer which is reproducing in friction contact disqualifies using aluminium alloys in friction contact. From this point of view first stage of investigation was to enhance hardness properties of the substrate by applying thermo-mechanical treatment. In this article the results of heat treatment of Al-Zn-Mg-Li alloy were presented. During investigations optimum parameters (timetemperature) of the solution heat treatment were elaborated. Micro hardness on the cross-section were investigated. Phase, chemical composition and morphology were determined. It was found that hardness after thermo-mechanical treatment of Al-Zn-Mg-Li is about 20% higher than for AlCu4Mg1 (7075 –T6) alloy.

Słowa kluczowe

EN

Al-Li alloy; mechanical treatment; high strength; optimization; application of alloys; aircraft industry

PL

stop Al-Li; obróbka mechaniczna; wytrzymałość; optymalizacja; zastosowanie; przemysł lotniczy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 3 spec.
• Strony: 277--282
• Opis fizyczny: Bibliogr. 11 poz., il., tab., wykr.

Twórcy

autor

Stegliński M.

• Technical University of Lodz, Institute of Material Science and Engineering, Stefanowskiego 1/15, 90-924 Lodz, Poland

autor

Kaczmarek Ł.

• Technical University of Lodz, Institute of Material Science and Engineering, Stefanowskiego 1/15, 90-924 Lodz, Poland

autor

Świniarski J.

• Technical University of Lodz, Department of Strength of Materials and Structures, Stefanowskiego 1/15, 90-924 Lodz, Poland

autor

Stachurski W.

• Technical University of Lodz, Institute of Machine Tools and Production Engineering, Stefanowskiego 1/15, 90-924 Lodz, Poland

autor

Sawicki J.

• Technical University of Lodz, Institute of Material Science and Engineering, Stefanowskiego 1/15, 90-924 Lodz, Poland

Bibliografia

• [1] W.S. Miller, L. Zhuang, J. Bottema, A.J. Wittebrood, P. DeSmet, A. Haszler, A. Vieregge, Recent development in aluminium alloys for the automotive industry, Materials Science and Engineering: A Volume 280, Issue 1 (2000) pp. 37–49.
• [2] A.M. Merlo, The contribution of surface engineering to the product performance in the automotive industry. Surface and Coatings Technology, 174-175 (2003), pp. 21-26.
• [3] S. Michna, I. Lukac, P. Louda, V. Ocenasek, H. Schneider, J. Drapala, R. Koreny, A. Miskufova, Aluminium materiale and Technologies from a to z. Presom, (2007) Czech Republic.
• [4] A. Steven, Steel cars face a weighty decision. Mech. Eng, 119(2) (1997) pp. 56–61.
• [5] Wei Fang, Li Jinshan, Hu Rui, Kou Hongchao, Influence of 1.0 wt% Li on Precipitates in Al-Zn-Mg-Cu Alloy, Chinese Journal of Aeronautics, Vol. 21, iss. 6 (2008), pp. 565-570.
• [6] P. C. Bai, T. T. Zhou, P. Y. Liu, Y. G. Zhang, C. Q. Chen, Effects of lithium addition on precipitation in Li-containing Al–Zn–Mg–Cu alloy, Materials Letters 58 (2004) pp. 3084–3087.
• [7] K. Ural, A study of optimization of heat treatment conditions in retrogression and reaging treatment of 7075-T6 Al alloy. J Mater Sci Lett 13 (1994) pp. 383– 385.
• [8] R. Dasgupta, H. Meenai, SiC particulate dispersed composites of an Al–Zn–Mg–Cu alloy: Property comparison with parent alloy, Materials Characterization, 54 (2005) pp. 438– 445.
• [9] B. Noble, S. J. Harris, K. Dinsdale, Acta Mater. 45 (1997) pp. 2069–2078.
• [10] V.G. Davydov, J.N. Fridlyander, M.V. Samarina, A.L. Orozov, L.B. Ber, V.I. Yelagin, R. Lang, T. Pfannenmüller, The Heat Treatment of Al-Cu-Li Alloys Ensured the Stability of Structure and. Properties al Long Low Temperature Exposure, Mater. Sci. Forum (2000) 331–337, pp. 1049–1054.
• [11] S. Katsikis, B. Noble, S.J. Harris, Microstructural stability during low temperature exposure of alloys within the Al–Li–Cu–Mg system, Materials Science and Engineering A 485 (2008) pp. 613–620.