Abstract
In the present study, Fe-based ER70S-6 filler rod of 1.2 mm diameter was cladded on a 6 mm AA 6061-T6 alloy sheet using a cold metal transfer process. The accelerated corrosion test was performed to evaluate the effect of corrosion on the hardness and wear resistance of the cladded surface. Acid corrosion resistance was studied by immersing the sample in 2.0% H2SO4 solution for 200 h. The morphology of the corroded surface was analyzed using upright optical and field emission scanning electron microscopes. Surface deterioration appears to be mostly caused by localized pitting corrosion. The weight loss due to corrosion was 8.9 × 10–4 g/mm2 after 200 h. The average microhardness reduced by 10% due to removal of hard materials and introduction of porosity on the cladded surface. The pin-on-disk test revealed significant reduction in wear resistance.
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Acknowledgements
The Central Instrumentation Facility of the Indian Institute of Guwahati (IITG) provided the testing facility. Cold Metal Transfer Welding Machine used in this work was procured by IITG Technology Innovation and Development Foundation (IITGTI&DF), which has been set up at IIT Guwahati as a part of the National Mission on Interdisciplinary Cyber Physical Systems (NMICPS). IITGTI&DF is undertaking research, development, and training activities on Technologies for Under Water Exploration with the financial assistance from Department of Science and Technology, India through grant number DST/NMICPS/TIH12/IITG/2020. Authors gratefully acknowledge all the support provided for conducting the present research.
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Das, B., Panda, B.N., Dixit, U.S. (2023). Corrosion Behavior and Its Effect on Mechanical Properties of ER70S-6 Cladding on AA 6061-T6 Alloy Using a Cold Metal Transfer Process. In: Joshi, S.N., Dixit, U.S., Mittal, R.K., Bag, S. (eds) Low Cost Manufacturing Technologies. NERC 2022. Springer, Singapore. https://doi.org/10.1007/978-981-19-8452-5_2
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