THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Furkan Sarsilmaz

RELATIONSHIP BETWEEN MICRO-STRUCTURE AND MECHANICAL PROPERTIES OF DISSIMILAR ALUMINUM ALLOY PLATES BY FRICTION STIR WELDING

ABSTRACT
Friction stir welding can be applied to weld dissimilar aluminum alloys which have different chemical and mechanical properties without causing any weld defects under a wide range of welding conditions. In this study, AA2024-T3 and AA6063-T6 aluminum alloys were selected and successfully welded in butt position together using by friction stir welding. The welding trials were conducted using different rotational speed and traverse speed conditions also investigating their effect on mechanical and micro-structural behavior of friction stir welding joints. The micro-structural evolution of the material was analyzed by optical observations and scanning electron microscopy inspections of the weld cross-sections. Tension and fatigue studies were also employed to the study. On the other hand, the fracture characterizations of samples were examined by scanning electron microscopy. Fatigue tests were performed by using a resonant electro-mechanical fatigue testing machine by axial bending fatigue test procedure. The fatigue strength has been analyzed drawing S-N curves. Experimental results indicate that micro-structural and mechanical properties are significantly affected by changing welding parameters within the chosen range of welding conditions.
KEYWORDS
friction stir welding, aluminum alloys, mechanical properties
PAPER SUBMITTED: 2017-08-25
PAPER REVISED: 2017-11-09
PAPER ACCEPTED: 2017-11-18
PUBLISHED ONLINE: 2018-01-07
DOI REFERENCE: https://doi.org/10.2298/TSCI170825271S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Supplement 1, PAGES [S55 - S66]
REFERENCES
  1. Thomas WM, Nicholas ED. Friction stir welding for the transportation industries. Mater Des, (1997);18: 269- 273.
  2. Elangovan K, Balasubramanian V.. Influences of pin profile and rotational speed of the tool on the formation of friction stir processing zone in AA2219 aluminium alloy. Mater. Sci. and Eng. A, (2007); 459: 7-18.
  3. Kim YG, Fujii H, Tsumura T, Komazaki T, Nakata K. Three defect types in friction stir welding of aluminum die casting alloy. Mater Sci and Eng A, (2006); 415: 250-254.
  4. Cabello MA, Rückert G, Huneau B, Sauvage X, Marya S. Comparison of TIG welded and friction stir welded Al-4.5Mg-0.26Sc alloy. J Mater Process Technol, (2008); 197: 332-343.
  5. Yong P, Changbin S, Yadong Z, and Ying C. Comparison of Electrochemical Behaviors between FSW and MIG Joints for 6082 Aluminum Alloy. Rare Metal Mater Eng, (2017);46(2): 344-348.
  6. Cavaliere P, Campanile G, Panella F, Squillace A. Effect of welding parameters on mechanical and microstructural properties of AA6056 joints produced by Friction Stir Welding. J Mater Process Technol, (2006) ; 180: 263-27.
  7. Mishra RS, Ma ZY.. Friction stir welding and processing. Mater Sci and Eng R: Rep, (2005); 50: 1-78.
  8. Rao MS, Kumar BVR, Hussain MM. Experimental study on the effect of welding parameters and tool pin profiles on the IS:65032 aluminum alloy FSW joints. Mater Today: Proc, (2017); 4(2): 1394-1404.
  9. Lee WB, Yeon YM, Jung SB. The mechanical properties related to the dominant microstructure in the weld zone of dissimilar formed Al alloy joints by friction stir welding. J Mater Sci, (2003); 38: 4183-4191.
  10. Khan NZ, Siddiquee AN, Khan ZA, Shihab SK. Investigations on tunneling and kissing bond defects in FSW joints for dissimilar aluminum alloys. J Alloys Comp, (2015); 648: 360-367.
  11. Sato YS, Kokawa H, Enomoto M, Jogan S. Microstructural evolution of 6063 aluminum during friction-stir welding. Metall and Mater Trans A, (1999); 30: 2429-2437.
  12. Fujii H, Cui L, Maeda M, Nogi K. Effect of tool shape on mechanical properties and microstructure of friction stir welded aluminum alloys. Mater Sci and Eng A, (2006); 419: 25-31.
  13. Fujii H, Kim YG, Tsumura T, Komazaki T, Nakata K. Effect of welding parameters on microstructure in the stir zone of FSW joints of aluminum die casting alloy. Mater Let, (2006); 60: 3830-3837.
  14. Sato YS, Kokawa H, Ikeda K, Enomoto M, Jogan S, Hashimoto T. Precipitation sequence in friction stir weld of 6063 aluminum during aging. Metall. and Mater. Trans A, (2001); 32: 3125-3130.
  15. Cavaliere P, Nobile R, Panella FW, Squillace A. Mechanical and microstructural behaviour of 2024-7075 aluminium alloy sheets joined by friction stir welding. Int J Mach Tools Manuf, (2006); 46: 588-594.
  16. Cavaliere P. Effect of friction stir processing on the fatigue properties of a Zr-modified 2014 aluminium alloy. Mater Charac, (2006); 57: 100-104.
  17. Jata KV, Semiatin SL. Continuous dynamic recrystallization during friction stir welding of high strength aluminum alloys. Scripta Mater,(2000); 43: 743-749.
  18. Okamura H, Aota K, Ezumi M. Friction stir welding of aluminum alloy and application to structure. J Japan Ins L Metals, (2000); 50: 166-172.
  19. Scialpi A, Filippis LAC, Cavaliere P. Influence of shoulder geometry on microstructure and mechanical properties of friction stir welded 6082 aluminium alloy. Mater Des, (2007) ; 28: 1124-1129.
  20. Jata KV, Sankaran KK, Ruschau J. Friction-stir welding effects on microstructure and fatigue of aluminum alloy 7050-T7451. Metall Mater Trans A, (2000); 31: 2181-2192.
  21. Kırık I, Ozdemir N, Sarsılmaz F. Microstructure and mechanical behaviour of friction welded AISI 2205/AISI 1040 steel joints. Mater Testing, (2012); 54: 683-687.
  22. Moreira PMGP, Figueiredo MAV, Castro PMST. Fatigue behaviour of FSW and MIG weldments for two aluminium alloys. Theo Appl Fracture Mech, (2007); 48(2): 169-177.
  23. Rodriguez RI, Jordon JB, Allison PG, Rushing T, and Garcia L. Low-cycle fatigue of dissimilar friction stir welded aluminum alloys. Mater Sci Eng A, 2016; 654: 236-248.
  24. Kermanidis AT, Tzamtzis A. An experimental approach for estimating the effect of heat affected zone (HAZ) microstructural gradient on fatigue crack growth rate in aluminum alloy FSW. Mater Sci Eng A, (2017); 691: 110-120.
  25. Nanninga N, White C, Mills O, Lukowski J. Effect of specimen orientation and extrusion welds on the fatigue life of an AA6063 alloy. Int J Fatigue, (2010); 32 (2): 238-246.
  26. Bystritskii V, Garate E, Earthman J, Kharlov A, Lavernia E, Peng X. Fatigue properties of 2024-T3, 7075-T6 aluminum alloys modified using plasma-enhanced ion beams. Theo Appl Fracture Mech,(1999); 32: 47-53.
  27. Gates NR, Fatemi A. Fatigue Life of 2024-T3 Aluminum under Variable Amplitude Multiaxial Loadings: Experimental Results and Predictions. Procedia Eng, (2015); 101: 159-168.
  28. Deng C, Wang H, Gong B, Li X, Lei Z. Effects of microstructural heterogeneity on very high cycle fatigue properties of 7050-T7451 aluminum alloy friction stir butt welds. Int J Fatigue, (2016); 83(2): 100-108.
PDF VERSION [DOWNLOAD]
Relationship between micro-structure and mechanical properties of dissimilar aluminum alloy plates by friction stir welding

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence