Characterisation of Ultrasonic Welding of Al-Al with Dry, Methanol and Acetone Medium Between the Weldments
Abhyuday Singh Thakur1, Parth Dasadiya2, Akshay Nair3, Harshvardhan Deshmukh4, Vishvesh Badheka5
1Abhyuday Singh Thakur, Department of Mechanical Engineering, Pandit Deendayal Petroleum University, Gandhinagar (Gujrat), India.
2Parth Dasadiya, Department of Mechanical Engineering, Pandit Deendayal Petroleum University, Gandhinagar (Gujrat), India.
3Akshay Nair, Department of Mechanical Engineering, Pandit Deendayal Petroleum University, Gandhinagar (Gujrat), India.
4Harshwardhan Deshmukh, Department of Mechanical Engineering, Pandit Deendayal Petroleum University, Gandhinagar (Gujrat), India.
5Vishvesh Badheka, Department of Mechanical Engineering, Pandit Deendayal Petroleum University, Gandhinagar (Gujrat), India.
Manuscript received on 18 June 2019 | Revised Manuscript received on 25 June 2019 | Manuscript published on 30 June 2019 | PP: 2713-2720 | Volume-8 Issue-5, June 2019 | Retrieval Number: E7565068519/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The ultrasonic welding method is a solution to join alloys that have high thermal conductivity. In this study, the ultrasonic welding method was applied on Al 6061 T6 aluminium alloy and the effects of different lubricants at the interface were examined. A feasibility test was performed initially by varying parameters like pressure, amplitude, delay time, weld time, hold time, power, force, energy and stroke while keeping other parameters constant. The results of the test helped in setting up the actual parameters of the study. A comparative study amongst two different interface lubricants namely methanol and acetone was performed and compared with dry welding conditions. The lubricants were applied at the faying surface to better understand the effects of friction and relative motion between the foils. The highest tensile strength was observed in case of methanol (151.15 MPa), followed by acetone (145.26 MPa) and dry condition (98.05 MPa). In the case of methanol, lubrication increased the inter-metallic temperature leading to deformation at the surface allowing proper mixing of metals and thus, enhancing strength. Next, a microstructure analysis was performed indicating plastic deformation and grain refinement more in case of lubricants. Lastly, a fractographic image analysis was done to observe the various fractures visualized during tensile testing.
Keywords: Aluminium Alloy, Fractographic Image Analysis, Lubrication, Microstructure Analysis, Tensile Strength, Ultrasonic Welding.
Scope of the Article: Welding Technology