Abstract
A study has been carried out to understand the effect of pulse frequencies on the formation of laves phase, the microstructural and corrosion properties of Inconel 718. Bead on welds was made by using gas tungsten arc welding (GTAW) in pulsed mode at different frequencies such as 2, 4, 6, 8 and 10 Hz. Varying frequencies exhibit significant changes in weld surface ripples. Microstructural analysis revealed that the welds at 2, 4 and 6 Hz showed both columnar and equiaxed dendrite structure, while at 8 and 10 Hz, the welds predominantly had equiaxed dendrites. Scanning electron microscopy results showed a reduction in continuous laves phase with the increase in pulsing frequency. Corrosion studies confirmed that the pitting resistance was increased at a higher frequency due to the reduction in laves phase in welds.
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References
Mirzaei M, Jeshvaghani R A, Yazdipour A, and Zangeneh-madar K, Mater Des 51 (2013) 709.
Janaki Ram G D, Venugopal Reddy A, Prasad Rao K, and Madhusudhan Reddy G, Sci Technol Weld Join 9 (2004) 390.
Wei P S, J Heat Transf 133 (2011) 031005.
Benea L, 5th IEEE Int Conf E-Health Bioeng 5 (2015).
Lucas M J, and Jackson C E, Weld J 49 (1970) 46.
Mills W J, Weld J 63 (1984) 237s.
Lambarri J, Leunda J, García Navas V, Soriano C, and Sanz C, Opt Lasers Eng 51 (2013) 813.
Radhakrishnan C, and Prasad Rao K, J Mater Sci 32 (1997) 1977.
Hirata Y, Weld Int 17 (2003) 98.
Long Y, Nie P, Li Z, Huang J, Li X, and Xu X, Trans Nonferrous Met Soc China 26 (2016) 431.
McInerney T J, and Madigan R B, Achieving Grain Refinement through Weld Pool Oscillation, ASM International (2005).
Davies G J, and Garland J G, Int Metall Rev 20 (1975) 83.
Janaki Ram G D, Reddy A V, Rao K P, and Reddy G M, J Mater Sci 40 (2005) 1497.
Suresh M V, Vamsi Krishna B, Venugopal P, and Prasad Rao K, Sci Technol Weld Join 9 (2004) 362.
Manikandan D S, Sivakumar D, Kalvala P, and Kamaraj M, Frequency Modulation Effect on Solidification of Alloy 718 Fusion Zone, Materials Science & Technology (2013).
Reddy G M, Mohandas T, and Papukutty K K, J Mater Process Technol 74 (1998) 27.
Ishida T, J Mater Sci 23 (1988) 3232.
Becker D W, and Adams Jr C M, Weld Res Suppl 0 (1979) 143.
Kurzynowski T, Smolina I, Kobiela K, Kuźnicka B, and Chlebus E, Mater Des 132 (2017) 349.
Song Y, Shi H, Wang J, Liu F, Han E-H, Ke W, Jie G, Wang J, and Huang H, Acta Metall Sin (English Lett) 30 (2017) 1201.
Tusek J, Int J Hydrog Energy 25 (2000) 369.
Anbarasan N, Jerome S, and Arivazhagan N, J Mater Process Technol (2018).
ASTM International, ASTM Int G59-97 (2014) 1.
Chen T, Nutter J, Hawk J, and Liu X, Corros Sci 89 (2014) 146.
Xiao Y H, den Ouden G, and Den Ouden G, Weld J 69 (1990) 289.
Andersen K, Cook G E, Barnett R J, and Strauss A M, IEEE Trans Ind Appl 33 (1997) 464.
Kotecki D J, Cheever D L, and Howden D G, Weld J 51 (1972) 368.
Valencia J J, and Quested P N, ASM Handbook, Vol. 15 Cast. 15 (2008) 468.
Cieslak M J, Superalloys 718, 625 Var Deriv (1991) 71.
Woo I, Nishimoto K, Tanaka K, and Shirai M, Weld Int 14 (2000) 514.
Manikandan S G K, Sivakumar D, Prasad Rao K, and Kamaraj M, Mater Charact 100 (2015) 192.
Vishwakarma K R, Richards N L, and Chaturvedi M C, Mater Sci Eng A 480 (2008) 517.
Yang M, Qi B, Cong B, Liu F, andYang Z, Int J Adv Manuf Technol 68 (2013) 19.
Prifiharni S, Anwar M S, Nikitasari A, and Mabruri E, in AIP Conf Proc (2018), p 020041.
Chen T, John H, Xu J, Lu Q, Hawk J, and Liu X, Corros Sci 78 (2014) 151.
Gooch T G, Weld Res (1996) 135 s.
Itman Filho A, Silva R V, Cardoso W da S, and Casteletti L C, Mater Res 17 (2014) 801.
Cardoso J L, Silva Nunes Cavalcante A L, Araujo Vieira R C, de Lima-Neto P, and Gomes da Silva M J, J Mater Res 31 (2016) 1755.
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The authors are grateful to the National Institute of Technology, Tiruchirappalli, India, and Vellore Institute of Technology, India, for supporting this research work.
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Anbarasan, N., Jerome, S., Suresh, G. et al. Effect of Pulse Frequency on Microstructural and Corrosion Properties of Inconel 718 Gas Tungsten Arc Weldments. Trans Indian Inst Met 72, 1299–1311 (2019). https://doi.org/10.1007/s12666-019-01626-y
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DOI: https://doi.org/10.1007/s12666-019-01626-y