Manikandan M

Department of Design and Automation

School of Mechanical Engineering

Vellore Campus

Sreenivasulu V

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.

&nbsp;

&nbsp;

VIT University

Materials Research Express

Hot corrosion behaviour of continuous and pulsed current gas tungsten arc welded Hastelloy X in different molten salts environment

Alloy 80 A is prone to hot cracking during conventional arc welding process. Microsegregation of alloying element Cr lead to the formation of M23C6 carbide phase during solidification of fusion zone, and it contributes to hot cracking. The current study employs different welding techniques and filler wires to minimize the microsegregation. The weldments were fabricated by Gas Tungsten Arc Welding (GTAW) and Pulsed Current Gas Tungsten Arc Welding (PCGTAW) techniques using filler wires 263 and ERNiCrMo-3. Scanning electron microscope (SEM) reveals the existence of secondary phase in the interdendritic region for all the weldments. Energy dispersive X-ray spectroscopy (EDS) analysis reports that PCGTAW eliminates microsegregation of Cr precipitate and suppress Nb and Mo precipitates better when compared to GTAW. X-ray Diffraction (XRD) analysis indicate the presence of M23C6 Cr and Mo-rich carbide phase in GTA weldment of 263 filler wire. Whereas in PCGTAW, NiCrCoMo phase is observed. In both GTAW and PCGTAW of ERNiCrMo-3, the intermetallic phases Ni8Nb and Cr2Ti are observed. The tensile test was conducted to assess the strength and ductility of the weldments. The results of the PCGTAW weldments have improved compared to their respective GTAW weldments. © 2018 The Society of Manufacturing Engineers

Journal of Manufacturing Processes

Development of welding technique to suppress the microsegregation in the aerospace grade alloy 80A by conventional current pulsing technique

Journal of Thermal Spray Technology

The High-Temperature Wear and Oxidation Behavior of CrC-Based HVOF Coatings

Oxidation of Metals

HVOF and Laser-Cladded Fe–Cr–B Coating in Simulated Biomass Combustion: Microstructure and Fireside Corrosion

Surface and Coatings Technology

Hot corrosion behaviour of HVOF-sprayed Cr 3 C 2 -NiCrMoNbAl coating

Transactions of the Indian Institute of Metals

Hot Corrosion Behaviour of HVOF Sprayed (Cr3C2–35 % NiCr) + 5 % Si Coatings in the Presence of Na2SO4–60 % V2O5 at 700 °C

Hot corrosion studies of HVOF sprayed carbide and metallic powder coatings on alloy 80A at 900 °C

Journal	Data powered by TypesetMaterials Research Express
Publisher	Data powered by TypesetIOP Publishing
Open Access	0