Materialwissenschaft und Werkstofftechnik, Volume 56, Issue 1, Page 77-87, January 2025.This study investigates the impact of binary gas mixtures in multi‐arc plasma generator using numerical simulations. The addition of hydrogen and nitrogen increases voltage and power, which is consistent with experimental data. The maximum temperature of the cathodes occurred at the edge rather than the tip, and the use of hydrogen in the gas mixture ...
K. Bobzin +7 more
wiley +1 more source
Enhancement of mechanical properties of alloy steel by GTAW with different purge/shielding gases [PDF]
FME Transactions, 2020 Welding of ferritic steel tube material T91 (9Cr-1Mo), was used because of high temperature withstanding, mechanical properties, compatibility with chemicals and adequate weldability. The main objective of this project is to find out near optimum welding
Britto Joseph G. +5 more
doaj
Plasma‐flash sintering: Metastable phase stabilization and evidence of ionized species
Journal of the American Ceramic Society, Volume 108, Issue 1, January 2025.Abstract The first demonstration of plasma‐flash sintering (PFS) is presented in this work. PFS is performed under a low‐pressure atmosphere that consecutively generates plasma and flash events. It is shown, by using several combined characterization techniques, that PFS stabilizes metastable phases on the surface of the material, which may be ...
Eva Gil‐González +4 more
wiley +1 more source
Study of gas-tungsten-arc welding power density Final report, 1 Jun. 1968 - 30 May 1969 [PDF]
Power density in gas tungsten arc welding with modified ...
Karlak, R. F., Pfluger, A. R.
core +1 more source
Derivation of forces acting on the liquid weld metal based on arc pressure measurements produced using alternating shielding gases in the GTAW process [PDF]
, 2013 As part of an ongoing process to fully evaluate the effects of an alternating shielding gas supply on the gas tungsten arc and gas metal arc welding processes, a comparison between arc pressures produced using argon, helium, alternating gases and GTAW-P ...
Campbell, Stuart +2 more
core
Characterization of the Plasma Shape of the TIG Welding Arc [PDF]
, 2006 Tungsten electrodes were prepared to analyse the plasma geometry at TIG welding. The investigated electrodes were La02, Th02 alloyed. Tip flatted electrodes were grinded as well. The shape of plasma were analysed for 36 different electrodes.
Bernáth, Andrea +2 more
core
Journal of Materials Research and TechnologyThis study examines the effect of heat input on crack formation in the heat-affected zone (HAZ) during gas tungsten arc welding (GTAW) repair of Inconel 939 superalloy.
Amir Hossein Jafarzadeh +2 more
doaj +1 more source
A comparison of the physics of Gas Tungsten Arc Welding (GTAW), Electron Beam Welding (EBW), and Laser Beam Welding (LBW) [PDF]
The physics governing the applicability and limitations of gas tungsten arc (GTA), electron beam (EB), and laser beam (LB) welding are compared.
Nunes, A. C., Jr.
core +1 more source
Marangoni driven turbulence in high energy surface melting processes
, 2016 Experimental observations of high-energy surface melting processes, such as laser welding, have revealed unsteady, often violent, motion of the free surface of the melt pool.
Kenjereš, Saša +3 more
core +1 more source
The variable polarity plasma arc welding process: Its application to the Space Shuttle external tank [PDF]
The technical history of the variable polarity plasma arc (VPPA) welding process being introduced as a partial replacement for the gas shielded tungsten arc process in assembly welding of the space shuttle external tank is described.
Bayless, O. E., Jr. +4 more
core +1 more source