FUNCTIONAL TESTING OF THIN AND STACK WELDED M400-50 A5 CRNGO ELECTRICAL STEEL
Bhushan Y. Dharmik and
Nitin Kumar Lautre
Additional contact information
Bhushan Y. Dharmik: Department of Mechanical Engineering, Visvesvaraya National Institute of Technology (VNIT), Nagpur 440010, Maharashtra, India
Nitin Kumar Lautre: Department of Mechanical Engineering, Visvesvaraya National Institute of Technology (VNIT), Nagpur 440010, Maharashtra, India
Surface Review and Letters (SRL), 2021, vol. 28, issue 10, 1-20
Abstract:
In this paper, the effect of gas tungsten arc (GTA) welding current on the mechanical–microstructural–magnetic (M3) properties of cold-rolled non-oriented electrical steel (CRNGO) are investigated. The thin CRNGO sheets of 0.5mm each are stacked, welded at a different range of welding current from 30 A to 110 A, and observed for mechanical testing (joint performance and micro-hardness), macroscopic (weld seam characterization), microscopic (grain size variation), and magnetic property evaluation of post-welded samples. The results showed that with the increase in weld current, significant variation in micro-hardness, weld strength, weld seam size, and grain size in the samples’ weld zone is observed. A massive increase in core loss and magnetic field strength, with a significant decrease in relative permeability, is observed for the welded samples compared to the non-welded sample. The samples’ weld strength was varying, depending on the size of the HAZ and fusion zone (FZ) region, for a different weld current range. The hardness in the samples’ weld region increases with the weld current, with relatively higher hardness values observed at the FZ region of weld. Besides, it is observed that the increase in weld current resulted in the formation of coarse-sized grains in the HAZ region of the weld sample, with fine grains existing at the FZ region for higher weld current. The study can be referred for determining the appropriate welding parameters for joining of stacked CRNGO sheets to achieve the desired material properties.
Keywords: CRNGO electrical steel; GTA welding; mechanical; microstructure; magnetic; weld current (search for similar items in EconPapers)
Date: 2021
References: Add references at CitEc
Citations:
Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X21500906
Access to full text is restricted to subscribers
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:28:y:2021:i:10:n:s0218625x21500906
Ordering information: This journal article can be ordered from
DOI: 10.1142/S0218625X21500906
Access Statistics for this article
Surface Review and Letters (SRL) is currently edited by S Y Tong
More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().