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Published in: The International Journal of Advanced Manufacturing Technology 1-2/2022

30-10-2021 | ORIGINAL ARTICLE

Impact of electromagnetic stirring on the gas metal arc welding of an MAR-M247 superalloy

Authors: Tzeng Yu-Chih, Cheng-Yu Lu, Ren-Yu Chen

Published in: The International Journal of Advanced Manufacturing Technology | Issue 1-2/2022

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Abstract

In this paper, the impact of electromagnetic stirring (EMS) on the gas metal arc welding (GTAW) of an MAR-M247 superalloy was investigated. Results revealed that, without electromagnetic stirring, it was easy for carbides in the heat-affected zone (HAZ) of the weld bead to liquefy during welding, leading to weld bead cracks. Electromagnetic stirring refined the grains in the HAZ and the weld bead, leading to grain strengthening and subsequently resulting in the effective improvement in the hardness of the weld bead. In addition, electromagnetic stirring significantly facilitated the formation of the weld bead by the removal of large inclusions which in turn effectively improved crack resistance of the joint. It also accelerated the floating up of gas holes thereby reducing the generation of porosity.

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Literature
28.
44.
go back to reference Tsang T, Savage D (1971) The effect of arc oscillation in either transverse or longitudinal direction has beneficial effect on the fusion zone microstructure and tends to reduce sensitivity in hot cracking. Weld J 50(11):777–786 Tsang T, Savage D (1971) The effect of arc oscillation in either transverse or longitudinal direction has beneficial effect on the fusion zone microstructure and tends to reduce sensitivity in hot cracking. Weld J 50(11):777–786
Metadata
Title
Impact of electromagnetic stirring on the gas metal arc welding of an MAR-M247 superalloy
Authors
Tzeng Yu-Chih
Cheng-Yu Lu
Ren-Yu Chen
Publication date
30-10-2021
Publisher
Springer London
Published in
The International Journal of Advanced Manufacturing Technology / Issue 1-2/2022
Print ISSN: 0268-3768
Electronic ISSN: 1433-3015
DOI
https://doi.org/10.1007/s00170-021-08236-3

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