Results 81 to 90 of about 18,132 (228)

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., John Rajan A., Murugesan G., Prabhakaran R., Jeevahan Jeya, Mageshwaran G.   +5 more
doaj  

Microstructural and Corrosion Properties of Cold Rolled Laser Welded UNS S32750 Duplex Stainless Steel [PDF]

, 2018
The main goal of this work was to study the effect of plastic deformation on weldability of duplex stainless steel (DSS). It is well known that plastic deformation prior to thermal cycles can enhance secondary phase precipitation in DSS which can lead to
B\uf6gre, Balint, Calliari, Irene, Gennari, Claudio, Lago, Mattia, Meszaros, Istvan, Pezzato, Luca   +5 more
core   +1 more source

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, Dobránszky, János, Marton, Hilda   +2 more
core  

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, Kidess, Anton, Kleijn, Chris R., Righolt, Bernhard W.   +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., Jones, C. S., III, Munafo, A. P., Nunes, A. C., Jr., Wilson, W. A.   +4 more
core   +1 more source

Heat-induced effects and cracking susceptibility in gas tungsten arc welding of Inconel 939 superalloy using Inconel 625 filler metal

Journal of Materials Research and Technology
This 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, Mohammad Saeed Shahriari, Rouholah Ashiri   +2 more
doaj   +1 more source

GMAW shielding gas flow optimisation by refinement of nozzle geometry [PDF]

, 2013
With an ongoing demand to improve the efficiency of the gas metal arc welding process, steps are being taken to reduce the shielding gas consumption. However, sufficient shielding gas coverage of the weld region is essential for the generation of high ...
Campbell, Fan, Ham, Lin, Lyttle, Oh, Ramsey   +6 more
core   +1 more source

Microstructure, Mechanical Properties and Fatigue Crack Growth Behavior of Gas Tungsten Arc Welding Welded Joint of the Hastelloy N Alloy. [PDF]

Materials (Basel), 2023
Wang S, Ma B, Feng D, Chen S, Ma Y, Li H, Lv C, Zheng W, Yang J.   +8 more
europepmc   +1 more source

Enhancing Microstructural and Mechanical Properties of Ferrous Medium-Entropy Alloy through Cu Addition and Post-Weld Heat Treatment in Gas Tungsten Arc Welding. [PDF]

Materials (Basel), 2023
Yoo S, Lee Y, Choi M, Nam H, Nam S, Kang N.   +5 more
europepmc   +1 more source