Devendranath Ramkumar K

Department of Manufacturing Engineering

School of Mechanical Engineering

Vellore Campus

Arivazhagan N

Prabaharan P

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of Materials Research

The effect of over-alloyed Ni-rich fillers on the weld mechanical properties of AISI 904L and Inconel 625 dissimilar joints achieved by pulsating current approach in gas tungsten arc welding (GTAW) is analysed in the present investigation. Micro-segregation and the migrated grain boundaries are noticed on the jointed zones of ERNiCrMo-4 and ERNiCrCoMo-1 respectively. The columnar dendrites near to the fusion line and the fine equiaxed dendritic structures at the centreline are witnessed in the weld regions of both the joints. Tension failures have occurred in the AISI 904L base metal. The notch tension test inferred that the weld strength is higher than the weak parent metal (AISI 904L). The impact toughness was considerably declined sharply compared to the parent metals. The notch tension and impact tests recommend the use of ERNiCrMo-4 filler for joining these dissimilar metals. The research findings based on the relationship between structure-property drawn from this investigation can be employed in the industries requiring the use of the novel joints. © 2019 IOP Publishing Ltd.

Materials Research Express

Investigation on the fusion zone microstructures and mechanical integrity of AISI 904L and Inconel 625 weld joints

Dissimilar metal welding involving AISI 304 and Monel 400 finds widespread use in marine and offshore environments for the fabrication of heat exchangers, evaporators, piping and vessels in petrochemical and power generation industries. However studies on the performance of such weldments are scantly found in the literature even though the individual metals have higher corrosion resistance and strength. This paper reports the work carried out on welding of AISI 304 and Monel 400 using Gas Tungsten Arc Welding (GTAW) technique to examine the weldability, mechanical and metallurgical properties. Investigations have been carried out on the hot corrosion behavior of these joints subjected to cyclic air oxidation and K2SO4&nbsp;+&nbsp;NaCl (60%) molten salt environment at 600&nbsp;°C. A comparative analysis was carried out on these weldments for two different filler metals such as E309L and ENiCu-7. The oxide scales formed on the various zones of the weldment have been characterized systematically using surface analytical techniques. Weld zone was found to be more susceptible to degradation than base metals used. The effect of filler materials on the hot corrosion is discussed. The studies reported in this paper would be beneficial for fabricators embracing this type of dissimilar weldments in the petrochemical and power generation industries.

Materials & Design

Effect of filler materials on the performance of gas tungsten arc welded AISI 304 and Monel 400

International Journal of Pressure Vessels and Piping

An assessment of microstructure, mechanical properties and corrosion resistance of dissimilar welds between Inconel 718 and 310S austenitic stainless steel

Welding Metallurgy and Weldability of Nickel-Base Alloys

Journal of Materials Processing Technology

Dissimilar welding of AISI 310 austenitic stainless steel to nickel-based alloy Inconel 657

57th International Astronautical Congress

International Space Station External Active Thermal Control System lines manufacturing

Characterization of microstructure and mechanical properties of Super Ni 718 alloy and AISI 316L dissimilar weldments

Journal	Data powered by TypesetJournal of Materials Research
Publisher	Data powered by TypesetCambridge University Press (CUP)
ISSN	0884-2914
Open Access	0