Study on mechanical and micro structural properties of spin arc welding in Hastelloy C-2000

Authors

DOI:

https://doi.org/10.3989/revmetalm.252

Keywords:

ERNiCrMo-4, Hastelloy C-2000, MPCGTAW, Mechanical strength, Spin arc welding

Abstract


Nickel-based Hastelloy C-2000 is widely used in the aerospace, chemical, and medicinal sectors. Investigating the potential efficacy of the spin arc welding process on Hastelloy C-2000 was the main focus of this study. In spin arc welding the centrifugal force has been obtained in the fusion zone, thus the weldbead quality increases. Weld current, rotating speed, and spin diameter are all separate parameters used in the welding procedure. The microstructural investigation was carried out using optical microscopy, X-Ray Diffraction (XRD), and field emission scanning electron microscopy (FESEM). The mechanical characteristics of the welded specimens were examined closely. Spin Arc Welding ultimate tensile strength (UTS), hardness value (HV), and impact experiments were compared to those of the Multi-pass Pulsed Current Gas Tungsten Arc welding method (MPCGTAW). In 27 tests, increasing the current and rotating speed resulted in greater penetration depth and weld height. The width of the weld was found to be a little high, with a spinning diameter of 2 mm. In comparison, samples 5 and 15 were found to have better hardness, tensile strength, and toughness, especially with suitable welding parameters such as current (120 I and 140 I), speed (1800 rpm), and spin diameter (2 mm and 3 mm). A microstructural study showed no grain segregation, contributing to the material’s increased hardness and tensile strength. The novel findings of the present study suggest that spin arc welding might be superior for various Hastelloy C-2000 connections that might have great applications in industries.

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Published

2023-12-30

How to Cite

Karthic Subramaniyan, I., Kumaravel Srividhya, P., & Kesavan, J. (2023). Study on mechanical and micro structural properties of spin arc welding in Hastelloy C-2000. Revista De Metalurgia, 59(4), e252. https://doi.org/10.3989/revmetalm.252

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