using low-hydrogen welding techniques for repair work because, McHenry says, cracks can form--even if the weld metal
wasn't embrittled--if too much hydrogen is used in welding.
In this sense, the principal objective of this work is the development of XRD procedure to measure residual stress in coarse grain weld metal
microstructure and apply it on the weld metal
residual stress determination of 9%Ni steel welded with 625 nickel-based superalloy.
The quality and performance of welded linepipes are evaluated and optimized through analysis of macrostructure, microstructure, mechanical properties, and corrosion behavior of the base metal and weld metal
. The effects of external soil temperature and concentration of internal corrosive solution on the corrosion behavior of the base metal and weld metal
The protrusion and shape of the weld metal
were not considered.
It is assumed that the weld is deposited instantaneously and the weld metal
is left to cool while distributing its heat into the whole structure until it returns to ambient temperature.
One of the real examples is formation of crystallization cracks in weld metal
. Schlett and Bush  were dealing with this problem on the weld joints and heat affected zone of the turbine disc because of the sulphur accumulation on the weld surfaces, residual stress and lowered capability of forming of weld joints.
This study was designed to determine the effect of weld repair on static and dynamic (i.e., fatigue) properties for conditions where the gage section of the test specimens is entirely weld metal
(full weld) or consist of both weld and base metal (half weld).
The topics include laser surface melting to repair stress corrosion cracking in weld metal
, pulsed laser surface treatment of multilayer gold-nickel-copper coatings to improve the corrosion resistance of components in electronics, liquid impingement erosion resistance, modifying the surface of steel to resist slurry erosion in power plants, and laser surface remelting to improve the erosion-corrosion resistance of nickel-chromium-aluminum-yttrium plasma spray coatings.
Porosity is a small pocket of gas caught in the weld metal
that can appear at any specific point on the weld or along its full length.
The all-positional Shield-Bright wires have a fast freezing slag to support the weld metal
. This enables deposition rates in positional welding that cannot be equalled by stick electrodes or solid wires.
In the weld joint of Al-Ti dissimilar metals, different zones can be typically identified, that is, AW 5754 aluminium alloy, aluminium based weld metal
, interface layer, titanium based weld metal
, titanium heat-affected zone (HAZ), and titanium Grade 2 base metal.