Startseite Influence of Tool Geometry on Microstructure and Mechanical Properties of a Friction Stir Welded 7075 Aluminum Alloy
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Influence of Tool Geometry on Microstructure and Mechanical Properties of a Friction Stir Welded 7075 Aluminum Alloy

  • Sami Sayer und Qinar Yeni
Veröffentlicht/Copyright: 28. Mai 2013
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Abstract

The effectiveness of a friction stir welded joint is strongly dependent on several process parameters such as the tool geometry, including the height and the shape of the pin and the shoulder surface of the tool. In this study, two pin parameters, namely the pitch dimension (1.25 and 0.75 mm) and the helix angle (right and left helices), are varied in order to study their influence on the micro-structural, hardness, and tensile properties of friction stir welded 6 mm thick aluminum alloy 7075. The results reveal that the best combination has been obtained when welding with a pitch dimension of 0.75 mm using a right helix pin.

Kurzfassung

Die Effektivität einer rührreib-geschweißten Verbindung ist stark abhängig von verschiedenen Prozessparametern, wie zum Beispiel von der Werkzeuggeometrie, einschließlich der Höhe und der Form des Zapfens und der Schulteroberfläche. In der vorliegenden Studie wurden zwei Zapfenparameter, dies sind die Einstichtiefe (1,25 und 0,75 mm) und der Helixwinkel (linke und rechte Helix) varriiert, um ihren Einfluß auf die mikrostrukturellen Eigenschaften, die Härte und die Zugfestigkeit der rührreib-geschweißten sechs Millimeter dicken Aluminiumlegierung 7075 zu untersuchen. Die Ergebnisse zeigen, dass sich die beste Parameterkombination ergibt, wenn mit einer Einstichtiefe von 0,75 mm und einer rechten Helix des Pins geschweißt wird.


Dr.-Ing. S. Sayer studied Mechanical Engineering at Ruhr University, Germany and has worked at a white goods company for several years. He obtained his Ph. D. degree at Ege University on Friction Stir Welding of Aluminum alloys. He is specialized in plastics technology and welding methods such as friction stir welding.

Dr. Yeni is an Assistant Professor in Dokuz Eylul University. She has carried out research in GKSS Research Center, Germany, where she has participated to European projects on fatigue and fracture assessment of welded joints. She is also specialized in welding methods such as laser beam and friction stir welding.


References

1 W. M.Thomas, E. D.Nicholas, J. C.Needham, M. G.Murch, P.Templesmith, C. J.Dawes: International Patent Application No. PCT/GB92/02203 (1991)Suche in Google Scholar

2 H. J.Liu, H.Fujii, M.Maeda, K.Nogi: Tensile properties and fracture locations of friction-stir-welded joints of 2017-T351 aluminum alloy, J. Mater. Process. Tech.142 (2003), pp. 69269610.1016/S0924-0136(03)00806-9Suche in Google Scholar

3 C. G.Rhodes, M. W.Mahoney, W. H.Bingel, R. A.Spurling, C. C.Bampton: Effects of friction stir welding on Microstructure of 7075 Aluminum, Scripta Mater.36 (1997), pp. 697510.1016/S1359-6462(96)00344-2Suche in Google Scholar

4 M.Guerra, C.Schmidt, L. C.McClure, L. E.Murr, A. C.Nunes: Flow patterns during friction stir welding, Mater. Charact.49 (2003), pp. 9510110.1016/S1044-5803(02)00362-5Suche in Google Scholar

5 J. Q.Su, T. W.Nelson, R.Mishra, M.Mahoney: Microstructural investigation of friction stir welded 7050-T651 Aluminium, Ada Mater.51 (2003), pp. 71372910.1016/S1359-6454(02)00449-4Suche in Google Scholar

6 B.London, M.Mahoney, B.Bingel, M.Calabrese, D.Waldron: Experimental methods for determining material flow in friction stir welds, Y. Ohji (Ed.): Proceedings of the Third International Symposium on Friction Stir Welding, Kobe, lapan (2001), pp. 2728Suche in Google Scholar

7 I.Shigematsu, Y. I.Kwon, K.Suzuki, T.Imai, N.Saito: loining of 5083 and 6061 Aluminum alloys by friction stir welding, I. Mater. Sei. Lett.22 (2003), pp. 343356Suche in Google Scholar

8 W. B.Lee, Y. M.Yeon, S. B. lung: The improvement of mechanical properties of friction-stir-welded A 356 Alloy, Mater Sei. Eng. A 355 (2003), pp. 154159Suche in Google Scholar

9 M.Song, R.Kovacevic: Thermal modeling of friction stir welding in a moving coordinate system and its validation, Int. I. Mach. Tool Manu.43 (2003), pp. 60561510.1016/S0890-6955(03)00022-1Suche in Google Scholar

10 G.Buffa, I.Hua, R.Shivpuri, L.Fratini: Design of the friction stir welding tool using the continuum based FEM model, Mater Sei. Eng. A419 (2006), pp. 38138810.1016/j.msea.2005.09.041Suche in Google Scholar

11 P. A.Colegrove, H. R.Shercliff: Two-dimensional CFD modelling of flow round profiled FSW tooling, Sei. Technol. Weld. loi.9 (2004), 48349210.1179/136217104225021832Suche in Google Scholar

12 D. G.Hattingh, C.Blignault, T. I.van Niekerk, M. N.lames: Characterization of the influences of FSW tool geometry on welding forces and weld tensile strength using an instrumented tool, I. Mater. Process. Tech.203(2008), pp. 4657Suche in Google Scholar

13 A.Scialpi, L. A. C.De Filippis, P.Cavaliere: Influence of shoulder geometry on micro-structure and mechanical properties of friction stir welded aluminum 6082 alloy, Mater, and Design28 (2007), pp. 11241129Suche in Google Scholar

14 R. A.Prado, L. E.Murr, K. F.Soto, I. C.McClure: Self-optimization in tool wear for friction-stir-welding of Al 6061+20%A1203MMC, Mater. Sei. Eng. A349 (2003), pp. 156165Suche in Google Scholar

15 Y.Tozaki, Y.Uematsu, K.Tokaji: Effect of tool geometry on microstructure and static strength in friction stir spot welded Aluminium alloys, Int. I. Mach. Tool Manu.47 (2007), pp. 2230223610.1016/j.ijmachtools.2007.07.005Suche in Google Scholar

16 C.Yeni: The effect of welding parameters on the microstructure and mechanical properties of friction stir welded AA 7075, Prakt. Metallogr.45 (2008), pp. 47949410.3139/147.100398Suche in Google Scholar

17 G.Liu, L. E.Murr, C-S.Niou, I. C.McClure, F. R.Vega: Microstructural aspects of the friction-stir-welding of 6061-T6 Aluminum, Scripta Mater.37 (1997), pp. 35536110.1016/S1359-6462(97)00093-6Suche in Google Scholar

18 R. S.Mishra, Z. Y.Ma: Friction Stir Welding and Processing, Mat. Sei. Eng. R.50 (2005), pp. 178Suche in Google Scholar

19 Z. Y.Ma, R. S.Mishra, M. W.Mahoney: Superplastic deformation behaviour of friction stir processed 7075 Al alloy, Ada Mater.50 (2002), pp. 44194430Suche in Google Scholar

20 Y. S.Sato, H.Kokawa, M.Enmoto, S.Logan: Microstructural evolution of 6063 Aluminum during friction-stir welding, Metal. Mater. Trans. A30 (1999), pp. 2429243710.1007/s11661-999-0251-1Suche in Google Scholar

21 S.Sayer, V.Ceyhun: Influence of pin structure on microstructure and mechanical properties of friction stir welded AA6063 (AlMgSi 0.5)Aluminum alloy, Materials Testing50 (2008), pp. 259263Suche in Google Scholar

22 K. V.Jata, S. L.Semiatin: Continuous dynamic recrystallization during friction stir welding of high strength Aluminum alloys, Scripta Mater.43 (2000), pp. 74374910.1016/S1359-6462(00)00480-2Suche in Google Scholar

23 S.Benavides, Y.Li, L. E.Murr, D.Brown, J. C.McClure: Low-temperature friction-stir-welding of 2024 Aluminum, Scripta Mater.41 (1999), pp. 80981510.1016/S1359-6462(99)00226-2Suche in Google Scholar

24 A. P.Reynolds: Visualisation of material flow in autogeneous friction stir welds, Sei. Technol. Weld. Joi.5 (2000), pp. 12012410.1179/136217100101538119Suche in Google Scholar

25 M.Mahoney, R. S.Mishra, T.Nelson, J.Flintoff, R.Islamgaliev, Y.Hovansky: High strain rate, thick section superplasticity created via friction stir processing, in: K. V.Jata, M. W.Mahoney, R. S.Mishra, S. L.Semiatin, D. P.Filed (Eds.): Friction Stir Welding and Processing, TMS, Warrendale (2001), pp. 183194Suche in Google Scholar

Published Online: 2013-05-28
Published in Print: 2009-11-01

© 2009, Carl Hanser Verlag, München

Heruntergeladen am 25.10.2025 von https://www.degruyterbrill.com/document/doi/10.3139/120.110096/pdf
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