A Comparative Study of Mechanical Properties and Microstructures of FSW joints with Conventional welded joints
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International Journal of Engineering Trends and Technology (IJETT) |  |
| © 2016 by IJETT Journal | ||
| Volume-35 Number-6 |
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| Year of Publication : 2016 | ||
| Authors : B.Kiran Kumar, V.Venkata Umapathi, J.Sandeep Kumar, J.Nageswara Rao, K.Kalyan Kumar |
Citation
B.Kiran Kumar, V.Venkata Umapathi, J.Sandeep Kumar, J.Nageswara Rao, K.Kalyan Kumar"A Comparative Study of Mechanical Properties and Microstructures of FSW joints with Conventional welded joints", International Journal of Engineering Trends and Technology (IJETT), V35(6),278-286 May 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
Energy savings and environmental preservation are important issues for us to resolve. Since reducing the weight of vehicles is one of the efficient measures, the use of the combination of steel and aluminium alloy has been increasing in fabricating vehicles. Under this situation, many trials to weld steel to aluminium alloy have been conducted. However, sound joints have not been produced so far, because hard and brittle intermetallic compounds were formed at the weld whenever steel was welded to aluminium by fusion welding. In gas welding process the metals get heated and due to the heating of the metal the strength of the metal decreases and also the microstructure of the metal changes. But in friction stir welding the metal gets less heated compared to the gas welding process. Due to the less heat absorbed by the metal the strength and microstructure changes comparatively less than the gas welding process. So comparatively friction stir welding gives accurate microstructure and tensile strength than the gas welding process. In the present work we tried to compare the micro structure, micro hardness and tensile strength of two Friction Stir welded joint with the gas welded joint.
References
1. Friction Stir Welding – An Update on Recent Developments. W.M. Thomas, S.A. Lockyer, S.W.Kalee and D.G. Staines. From a paper presented at ImechE Stressed Components in Aluminium Alloys 2nd April 2003. Birmingham UK.
2. K. R. Suresh, H. B. Niranjan, P. Martin Jebaraj and M. P. Chowdiah " Tensile and Wear properties of Aluminium Composites" Wear, 255(2003), pp 638-642.
3. 12. Majid Hoseini and Mohamood Mertian "Tiensile Properties of in-situ Aluminium-Alumina Composites" Materials Letters 59 (2005), pp 3414-3418.
4. L. Ceschini, G. Minak and A. Morri "Tensile and Fatigue properties of the AA6061/20 vol.% Al2O3 and AA7005/10 vol.% A12O3p Composites" Composites Science and Technology 66 (2006), pp 333-342.
5. Miroslav M. Mijajlovi, Nenad T. Pavlovi ?Experimental studies of parameters affecting the heat generation in friction stir welding process thermal science, Year 2012, Vol. 16, Suppl. 2, pp. S405-S417.
6. Moataz M. Attallaha, Hanadi, G. Salemb, ?Friction stir welding parameters: a tool for controlling abnormal grain growth during subsequent heat treatment Materials Science and Engineering A 391 (2005) 51–59.
7. Heidarzadeh, A., Khodaverdizadeh, H., Mahmoudi, A., & Nazari, E. Tensile behaviour of friction stir welded AA6061- T4 aluminum alloy joints. JOURNAL OF MATERIALS& DESIGN 2012; 37:166–173.
Keywords
Friction Stir Welding (FSW), Al alloys, mechanical properties, microstructure.