New original method and device for testing aluminum alloys susceptibility for extrusion welding

• Autorzy: Leśniak D.

Identyfikatory

DOI

10.1016/j.acme.2018.06.004

• Języki publikacji: EN

Abstrakty

EN

Common methods of weldability assessment of aluminium alloys do not fully reflect the welding conditions occurring during extrusion through the porthole dies, hence the obtained results are not much good for practical use. There are no weldability tests in which the temperature, unit pressure, welding time and deformations in the welding zone can be simultaneously controlled. It is necessary in the correct bonding test to provide the welding conditions without contact of air, which could oxidise of the metal streams. The paper presents the original device for the research of aluminium alloy weldability, reflecting the conditions of metal bonding (without air access), which occur in the welding chamber of porthole dies. This device is a modification of a previously patented device carried out in order to determine more precise basic welding parameters. The operation principle as well as the methodology for determination of susceptibility to welding of aluminum alloys has been presented, using the AlMgSi alloy as an example in the type of EN AW-6082. The welding conditions of the 6082 alloy were determined, which allowed for high quality bonding. A parameter describing the welding conditions was defined as the relationship of the normal welding stress to the yield stress (σn/k) and its values were determined at different temperatures. The obtained values of welding stress are the basis for the proper design of porthole dies.

Słowa kluczowe

EN

weldability testing; extrusion welding; temperature-stress parameters; aluminium alloys; joint quality

PL

stopy aluminium; spawanie ekstruzyjne; spawalnictwo

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 4
• Strony: 1491--1505
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Leśniak D.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metals, 30-059 Krakow, al. Mickiewicza 30, A-2, woj. małopolskie, Poland

Bibliografia

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• [8] J. Zasadziński, J. Richert,W.Z.Misiołek,Weld quality in extruded aluminum hollow sections, Light Met. Age 51 (1993) 8–13.
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• [10] H. Valberg, Extrusion welding in aluminium extrusion, Int. J. Mater. Prod. Technol. 17 (7) (2002) 497–556.
• [11] A. Oosterkamp, L. Djapic, A. Nordeide, Kissing bond phenomena in solid-state welds of aluminum alloys, Weld. J. (2004) 225–231.
• [12] Y.A. Khan, H. Valberg, I. Irgens, Joining of metal streams in extrusion welding,, Int. J. Mater. Form. 2 (2009) 109–112.
• [13] J. Richert, J. Zasadziński, W. Libura, M. Galanty, D. Leśniak, A. Rękas, Method of weldability testing of metals and alloys, especially aluminium alloys intended to extrusion through porthole dies, patent PL 220476 B1, AGH Krakow 2010 (In Polish).
• [14] D. Leśniak, Analysis of Welding Conditions During Extrusion of AlCuMg Alloys, Habilitation Thesis, AGH Krakow, 2012 (in Polish).
• [15] D. Leśniak, A. Rękas, W. Libura, J. Zasadziński, T. Latos, H. Jurczak, Method of weldability testing of metals and alloys and device for production of welded samples for weldability analyses, patent no. 77P14PL, AGH Krakow, 2016.
• [16] A. Woźnicki, D. Leśniak, G. Włoch, B. Leszczyńska-Madej, A. Wojtyna, The effect of homogenization conditions on the structure and properties of 6082 alloy billets, Arch. Metall. Mater. 60 (3A) (2015) 1763–1771.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)