AISI 1040 ve AA6013 malzeme çiftinin mekanik kilitleme yönteminde (MLM) farklı bağlantı açıları kullanılarak birleştirilmesi

Öz

Farklı malzeme türlerinin birleştirilerek kullanılmasının zorunlu olduğu birçok endüstriyel uygulama bulunmaktadır. Ancak kaynak, döküm, yapıştırma gibi diğer birleştirme yöntemleri ile bu her zaman mümkün olmamakta ya da çeşitli problemler ortaya çıkarmaktadır. Bu problemlerin ortadan kaldırılması amacıyla klasik birleştirme yöntemlerine alternatif olarak yeni ve çevreci bir yöntem olan mekanik kilitleme yöntemi (MLM) kullanılmaktadır. MLM yöntemi özellikle farklı kimyasal ve fiziksel özelliklere sahip malzeme çiftlerinin birleştirilmesinde kullanılabilir. Bununla birlikte yüksek ısı girdisinin neden olduğu mikro yapı hatalarının azaltılması istenen durumlarda tercih edilebilir. Bu çalışmada; MLM için bağlantı kalitesini doğrudan etkileyen bağlantı açısının mikro yapı ve mekanik özelliklerle olan etkisi araştırılmıştır. Bu amaçla; AISI 1040 çelik ve AA6013 alüminyum alaşımı MLM yöntemi ile farklı bağlantı açıları (7°,10° ve 13°) kullanılarak birleştirilmiştir. Birleştirme işlemi sonrasında mikro yapı incelemesi, mikro sertlik ölçümleri ile çekme testleri yapılarak bağlantı performansı belirlenmiştir. Çalışma sonunda 13° bağlantı açısı ile hazırlanan numunelerde 241,38 MPa değer ile en yüksek mekanik özellikler elde edilmiştir. Bağlantı açısının daha düşük olduğu diğer numunelerde ise bağlantıyı gerçekleştiren flanş oluşumunun düzensiz dağılım gösterdiği, malzeme akışının yetersiz olduğu bunun sonucunda mekanik özelliklerin düştüğü tespit edilmiştir.

Anahtar Kelimeler

• Mekanik kilitleme yöntemi
• AISI 1040
• AA6013
• mekanik özellikler
• metalürjik özellikler

Joining of AISI 1040 and AA6013 material pairs by mechanical locking method (MLM) using different connection angle

Öz

There are many industrial applications where different types of materials must be combined and used. However, this is not always possible with welding, bonding and other disassembling methods or it contains various problems. In order to eliminate these problems, mechanical locking method (MLM), which is a new and environmentally friendly method, is used as an alternative to classical joining methods. MLM method can be used especially in joining material pairs with different chemical and physical properties.However, it can be preferred in situations where it is desired to reduce microstructure defects caused by high heat input. In this study; For MLM method, the effect of the connection angle, which can directly affect the joining quality, on the microstructure and mechanical properties was investigated. For this purpose, AISI 1040 steel and AA6013 aluminum alloy were joined at different connection angles (7°, 10° and 13°) using the MLM method. After the joining process, microstructure analysis, microhardness measurements and tensile tests were performed and the connection performance was determined. At the end of the study, the highest mechanical properties were obtained with a value of 241.38 MPa in the samples prepared with 13° connection angle. An other samples where the connection angle was lower, it was determined that the flange formation performing the connection showed an irregular distribution, the material flow was insufficient and the mechanical properties decreased as a result.

Kaynakça

1. [1] Uzun H., Donne C.D., Argagnotto A., Ghidini T. and Gambaro C., Friction stir welding of dissimilar Al 6013-T4 To X5CrNi18-10 stainless steel, Materials and Design, 26, 41-46, 2005.
2. [2] Piccini J. M., Svobodab H.G., Effect of pin length on Friction Stir Spot Welding (FSSW) of dissimilar Aluminum-Steel joints, Procedia Materials Science, 9, 504 – 513, 2015.
3. [3] Ünel E., Taban E., Properties and optimization of dissimilar aluminum steel CMT welds, Welding in the world, 61, 1-9, 2007.
4. [4] Mercan S., Özdemir N., AISI 2205 / AISI 1020 malzeme çiftinin sürtünme kaynağı ile birleştirilmesi, NWSA-Technological Applied Sciences, 8/2, 15-34, 2013.
5. [5] Durmuş H., Çömez N., Yurddaşkal M., Soğuk metal transfer kaynağı ile birleştirilmiş AA6061-galvanizli çelik sacların karakterizasyonu, Dicle Üniversitesi Mühendislik Dergisi 8, 835-844, 2017.
6. [6] Rykała J., Pfeifer T., Robotised CMT welding of 6xxx series aluminium alloys, Biuletyn Instytutu Spawalnictwa, 6, 5-11, 2013.
7. [7] Kimapong K. and Watanabe T., Effect of Welding Process Parameters on Mechanical Property of FSW Lap Joint between Aluminum Alloy and Steel, Materials Transactions, 46(10), 2211-2217, 2005.
8. [8] Hussein S.A., Tahir A. S. M., Hadzley A.B., Characteristics of aluminum-to-steel joint made by friction stir welding: A review, Materials Today Communications 5, 32–49, 2015.

9. [9] Shahverdi H.R., Ghomashchi M.R., Shabestari S., Hejazi J., Microstructural analysis of interfacial reaction between molten aluminium and solid iron, Journal of Materials Processing Technology, 124, 345-352, 2012.
10. [10] Furukawa K., New CMT arc welding process – welding of steel to aluminium dissimilar metals and welding of super-thin aluminium sheets, Welding International 20(6), 440–445, 2006.
11. [11] Kah P., Suoranta R., Martikainen J., Advanced gas metal arc welding processes, The International Journal of Advanced Manufacturing Technology 67(1-4), 655–674, 2012.
12. [12] Liu J., Jiang S., Shi Y., Kuang Y., Huang G., Zhang H., Laser fusion – brazing of aluminum alloy to galvanized steel with pure Al filler powder, Opt Laser Technol, 66, 1–8, 2015.
13. [13] Dong H., Chen S., Song Y., Guo X., Zhang X., Sun Z., Refilled friction stir spotwelding of aluminum alloy to galvanized steel sheets, Materials and Design, 94, 457–466, 2016.
14. [14] Coa R., Sun J., Chen J.H., Wang P.C., Weldability of CMT Joining of AA6061-T6 to Boron Steels with Various Coatings, Welding Journal, 93, 193-204, 2014.
15. [15] Lee W.B., Schmuecker M., Mercardo U.A., Biallas, G. and Jung, S.-B., Interfacial reaction in steel-aluminum joints made by friction stir welding, Scripta Materialia, 55, 355-358, 2006.
16. [16] Pourali M., Abdollah-zadeh A., Saeid T. and Kargar, F., Influence of welding parameters on intermetallic compounds formation in dissimilar steel/aluminum friction stir welds, Journal of Alloys and Compounds, 715, 1-8, 2017.
17. [17] Sierra G., Peyre P., Deschaux-Beaume F., Stuart D., Fras G., Steel to aluminium key-hole laser welding, Materials Science and Engineering: A 447, (1-2), 197–208, 2007.
18. [18] Chen C. M., Kovacevic R., Joining of Al 6061 alloy to AISI 1018 steel by combined effects of fusion and solid state welding, International Journal of Machine Tools & Manufacture, 44, 1205–1214, 2004.
19. [19] Xu N.,Chen L.,Feng R.N.,Song Q.N.,Bao Y.F., Recrystallization of Cu-30Zn brass during friction stir welding, Journal of Materials Research and Technology, 9 (3), 3746-3658, 2020.
20. [20] Esmaeili A., Besharati Givi, M.K., Zareie Rajani H.R.,A metallurgical and mechanical study on dissimilar Friction Stir welding of aluminum 1050 to brass (CuZn30), Materials Science and Engineering: A, 528 (22–23), 7093-7102, 2011.
21. [21] Kar A., Yadav D., Suwasc S., Kailas S.V., Role of plastic deformation mechanisms during the microstructural evolution and intermetallics formation in dissimilar friction stir weld, Materials Characterization, 164, 110371, 2020.
22. [22] Zhao W., Wu C., Su H., Numerical investigation of heat generation and plastic deformation in ultrasonic assisted friction stir welding, Journal of Manufacturing Processes, 56 (A), 967-980, 2020.
23. [23] Mercan S., Farklı Metal Çiftlerinin Mekanik Kilitlenme Yöntemi ile Birleştirilmesi, GU J Sci, Part C, 7(1) 25-36, 2019.
24. [24] Bozzi S., Helbert-Etter A.L., Baudin T., Criqui B. and Kerbiguet J.G., Intermetallic compounds in Al 6016/IF-steel friction stir spot welds, Materials Science and Engineering A, 527, 4505-4509, 2010.
25. [25] Ramachandran K.K., Murugan N., Kumar S.S., Influence of tool traverse speed on the characteristics of dissimilar friction stir welded aluminium alloy, AA5052 and HSLA steel joints, Archives Civ. Mech. Eng., 15(4), 822-830, 2015.
26. [26] Taban E., Gould J.E. and Lippold J.C., Alüminyum çelik farklı metal kaynaklı bağlantıların mikro yapısal karakterizasyonu, Kaynak Teknolojisi VII. Ulusal Kongre ve Sergisi, 97-102, 1994.
27. [27] Lee C.-Y., Choi D.-H., Yeon Y.-M. and Jung S.B., Dissimilar friction stir spot welding of low carbon steel and Al-Mg alloy by formation of IMCs, Science and Technology of Welding and Joining, 14, 216-220, 2013.
28. [28] Tesch A., Pippan R., Trautmann K.H, Döker H., Short cracks initiated in Al6013-T6 with the focused ion beam (FIB) –technology, International journal of fatigue, 29, 1803-1811, 2007.
29. [29] Juricic C., Dalle Donne C. and Dreβler U., Effect of heat treatments on mechanical properties of friction stir welded 6013, In: Third International Symposium on Friction Stir Welding, Kobe, Japan, 2001.
30. [30] Abdollah-Zadeh A. Saeid T., Sazgari B., Microstructural and mechanical properties of friction stir welded aluminium/copper lap joints, Journal of Alloys and compounds, 460, 1-2, 535-538, 2008.
31. [31] Shen Z., Chen Y., Haghshenas M. and Gerlich A.P., Role of welding parameters on interfacial bonding in dissimilar steel/aluminum friction stir welds, Engineering Science and Technology, an International Journal, 18, 270-277, 2015.
32. [32] Yasui T., Wu-Bian T., Hanai A., Mori T., Hirosawa K. and Fukumoto M,. Friction stir girth welding between aluminum and steel rods, Procedia Manufacturing, 15, 1376-1381, 2018.
33. [33] Robinson J., S.I Redington W., The influence of alloy composition on residual stresses in heat treated aluminium alloys, Materials Characterics,105, 47-55, 2015.
34. [34] Azo Materials. Properties of materials.Azo Materials.(https://www.azom.com). Erişim Tarihi: 20.09.2019.