Modification of Weld Metal with Tungsten Carbide and Titanium Nitride Nanoparticles in Twin Submerged Arc Welding

The influence of tungsten carbide and titanium nitride nanoparticles on the structure and properties of the weld metal of welded joints made by automatic twin submerged arc welding is considered. The nanoparticles have been introduced into the weld pool as a part of the “master alloy” based on nicke...

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Bibliographic Details
Published in:High energy chemistry 2018-09, Vol.52 (5), p.440-445
Main Authors: Aleshin, N. P., Grigor’ev, M. V., Kobernik, N. V., Mikheev, R. S., Pankratov, A. S., Samokhin, A. V., Alekseev, N. V., Sinaisky, M. A.
Format: Article
Language:English
Subjects:
Automatic welding
Chemistry
Chemistry and Materials Science
Impact strength
Master alloys
Microalloying
Nanoparticles
Nanosized Structures and Materials
Physical Chemistry
Submerged arc welding
Titanium
Titanium nitride
Tungsten carbide
Weld metal
Welded joints
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Summary:The influence of tungsten carbide and titanium nitride nanoparticles on the structure and properties of the weld metal of welded joints made by automatic twin submerged arc welding is considered. The nanoparticles have been introduced into the weld pool as a part of the “master alloy” based on nickel powder (PNE-1 according to GOST 9722). It has been shown that modifying the weld metal with tungsten carbide nanoparticles holds promise for enhancing the impact strength. In addition, it has been found that titanium nitride is prone to dissociation under the same conditions. However, microalloying with titanium, which is due to the release of titanium from the nitride, leads to an increase in the impact strength of the weld metal.
ISSN:0018-1439
1608-3148
DOI:10.1134/S0018143918050028