Suppressing the Use of Critical Raw Materials in Joining of AISI 304 Stainless Steel Using Activated Tungsten Inert Gas Welding
Journal article
Balos, S., Dramicanin, M., Janjatovic, P., Zabunov, I., Pilic, B., Goel, S. and Szutkowska, M. (2019). Suppressing the Use of Critical Raw Materials in Joining of AISI 304 Stainless Steel Using Activated Tungsten Inert Gas Welding. Metals. 9 (11), p. 1187. https://doi.org/10.3390/met9111187
Authors | Balos, S., Dramicanin, M., Janjatovic, P., Zabunov, I., Pilic, B., Goel, S. and Szutkowska, M. |
---|---|
Abstract | The aim of this study was to study the influence of TiO2 coating for its efficacy during the activated-tungsten inert gas (TIG) welding and to suppress the use of consumables that are rich in critical raw materials. Post-welding penetration depth, particle size distribution, microstructure, and microhardness of welded samples were assessed. Based on these results, it was found that there is no direct correlation between the weld metal surface area and the coating. The particle size in the coating, although, seemed to have played an important role, e.g., nanoparticles resulted in an increased penetration depth and depth/width (D/W) ratio as opposed to the submicron-sized particles. The most optimal welding condition resulted when a mixture of submicron-sized and nanometric-sized particles were used. It was demonstrated by the Zeta analyser results that the micron particles rub the nanoparticles due to mechanical friction resulting in smaller oxide particle formation in the coating. Finally, the presence of Marangoni convection in TIG and reversed Marangoni convection in the activated TIG (A-TIG) process were proven by means of the microstructure analysis and measurement, which were found to be positively correlated |
Keywords | A-TIG welding; particle size; metal flow; penetration depth |
Year | 2019 |
Journal | Metals |
Journal citation | 9 (11), p. 1187 |
Publisher | MDPI |
ISSN | 2075-4701 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/met9111187 |
Web address (URL) | https://www.mdpi.com/2075-4701/9/11/1187 |
Publication dates | |
Online | 04 Nov 2019 |
Publication process dates | |
Accepted | 21 Oct 2019 |
Deposited | 23 Dec 2019 |
Publisher's version | License File Access Level Open |
Accepted author manuscript | License File Access Level Controlled |
https://openresearch.lsbu.ac.uk/item/88v5q
Download files
141
total views80
total downloads4
views this month4
downloads this month