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Investigations on the microstructure and mechanical properties of multi-pass PCGTA welding of super-duplex stainless steel

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Abstract

This paper addresses the weldability, microstructure and mechanical properties of the multi-pass welding of super-duplex stainless steel (SDSS). Pulsed current gas tungsten arc welding (PCGTAW) was carried out employing ER2553 and ERNiCrMo-4 fillers. Microstructure examination showed the presence of austenite in different forms at the weld zone of ER2553 whereas multi-directional grain growth was observed for ERNiCrMo-4 welds. Tensile and impact studies corroborated that the weldments employing ER2553 exhibited better results compared with ERNiCrMo-4 weldments. Detailed structure–property relationships of the weldments have been reported in the present study. The results corroborated that the enhanced properties could be achieved with the matching filler wire compared with the over-alloyed filler.

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Authors and Affiliations

  1. School of Mechanical & Building Sciences, VIT University, Vellore, 632 014, India

    K DEVENDRANATH RAMKUMAR, DEBIDUTTA MISHRA, G THIRUVENGATAM, S P SUDHARSAN, TADIKONDA HARSHA MOHAN, VIMAL SAXENA, RACHIT PANDEY & N ARIVAZHAGAN

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  1. K DEVENDRANATH RAMKUMAR
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  2. DEBIDUTTA MISHRA
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  3. G THIRUVENGATAM
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  4. S P SUDHARSAN
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  5. TADIKONDA HARSHA MOHAN
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  6. VIMAL SAXENA
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  7. RACHIT PANDEY
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  8. N ARIVAZHAGAN
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Correspondence to K DEVENDRANATH RAMKUMAR.

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RAMKUMAR, K.D., MISHRA, D., THIRUVENGATAM, G. et al. Investigations on the microstructure and mechanical properties of multi-pass PCGTA welding of super-duplex stainless steel. Bull Mater Sci 38, 837–846 (2015). https://doi.org/10.1007/s12034-015-0915-y

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  • DOI: https://doi.org/10.1007/s12034-015-0915-y

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