Effect of laser-welding parameters on the heat input and weld-bead profile [PDF]
Laser butt-welding of medium carbon steel was investigated using CW 1.5 kW CO2 laser. The effect of laser power (1.2 - 1.43 kW), welding speed (30 - 70 cm/min) and focal point position (-2.5 - 0 mm) on the heat input and the weld-bead geometry (i.e ...
A.G. Olabi +13 more
core +1 more source
Optimising the laser-welded butt-joints of medium carbon steel using RSM [PDF]
The optimization capabilities in design-expert software were used to optimise the keyhole parameters (i.e. maximize penetration (P) and minimise the heat input, width of welded zone, (W) and width of heat affected zone (WHAZ)) in CW CO2 laser butt ...
Benyounis, Khaled +2 more
core +1 more source
Numerical study of the plastic behaviour in tension of welds in high strength steels [PDF]
The influence of the mismatch between material properties and constraint on the plastic deformation behaviour of the heat affected zone of welds in high strength steels is investigated in this study, using finite element simulations.
Fernandes, J. V. +3 more
core +1 more source
Physical Nature of the Processes in Structure Forming, Phase and Chemical Composition of pipe Permanent Joints when MMA Welding [PDF]
The paper outlines peculiarities of structure formation, phase and chemical composition in regard to heat content in molten electrode metal beads when pipe steel (steel 09G2S) welding using power sources with various energy characteristics.
Chinakhov, Dmitriy Anatol'evich +3 more
core +1 more source
Technology Of MIG-MAG Welds Strength Enhancement [PDF]
A new technology of MIG MAG welding control is developed. Authors introduce use of power AC and pulse feed of welding wire in the arc zone, that downsizes the heat affected zone, stabilizes formation of electrode metal droplets, as external magnetic ...
Korotkov, S. E. +3 more
core +2 more sources
Effect of the morphology of the martensite-austenite phase on fracture of the weld heat affected zone in vanadium and niobium microalloyed steels [PDF]
In multipass welding, the intercritically reheated coarse grained heat affected zone demonstrates the worst toughness in welded joint, since it contains a high-carbon martensite with some retained austenite, known as M-A phase, which is brittle and ...
Baker, T.N., Li, Y.
core +1 more source
A microstructural evaluation of friction stir welded 7075 aluminum rolled plate heat treated to the semi-solid state [PDF]
Two rolled plates of 7075 aluminum alloy were used as starting material. The plates were welded using a simultaneous double-sided friction stir welding (FSW) process.
Azadi Chegeni, A., Kapranos, P.
core +2 more sources
Структура сварных соединений наноструктурированного титанового сплава ВТ6, полученных при электронно-лучевой сварке [PDF]
The paper presents the results of structure studies the properties of welded joints, produced by electron beam welding of titanium alloy VT6 in nanostructured condition. Revealed three characteristic zones in the area of the weld: zone of the base metal,
Клименов, Василий Александрович +3 more
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Influence of Post-Welding Heat Treatment on the Corrosion Behavior of a 2050-T3 Aluminum-Copper-Lithium Alloy Friction Stir Welding Joint [PDF]
The corrosion behavior of a Friction Stir Welding joint in 2050-T3 Al-Cu-Li alloy was studied in 1 M NaCl solution and the influence of T8 post-welding heat treatment on its corrosion susceptibility was analyzed.
Cassada +10 more
core +2 more sources
Welding material structure and phase composition in 0.12C-18Cr-10Ni-1Ti-Fe steel modified by plastic deformation [PDF]
The paper presents the transmission electron microscopy (TEM) investigations of the structure and phase composition of the heat-affected zone (HAZ) in welded joint obtained by electrode welding.
Абабков, Н. В. +3 more
core +2 more sources

