Results 11 to 20 of about 673,005 (385)

Microstructure and Properties of Heat Affected Zone in High-Carbon Steel after Welding with Fast Cooling in Water [PDF]

open access: yesMaterials (Basel), 2020
The purpose of the research was to obtain an arc welded joint of a preliminary quenched high-carbon wear resistant steel without losing the structure that is previously obtained by heat treatment.
M. Brykov   +7 more
semanticscholar   +2 more sources

Normalizing effect on fatigue crack propagation at the heat-affected zone of AISI 4140 steel shielded metal arc weldings [PDF]

open access: yesMaterials Research, 2013
The fractography and mechanical behaviour of fatigue crack propagation in the heat-affected zone (HAZ) of AISI 4140 steel welded using the shielded metal arc process was analysed.
B. Vargas-Arista   +4 more
doaj   +3 more sources

Influence of residual stresses on resistance to brittle fracture in weldment zones

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2018
The relevance of the researchinthe field of welded joints strength and failure is associated with the necessity of ensuring high operational reliability and safety running hazardous production facilities.
Aleksandr Sergeevich Zavorin   +5 more
doaj   +1 more source

Numerical study of the plastic behaviour in tension of welds in high strength steels [PDF]

open access: yes, 2004
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

Hardening Embrittlement and Non-Hardening Embrittlement of Welding-Heat-Affected Zones in a Cr-Mo Low Alloy Steel

open access: yesMetals, 2018
The embrittlement of heat affected zones (HAZs) resulting from the welding of a P-doped 2.25Cr-1Mo steel was studied by the analysis of the fracture appearance transition temperatures (FATTs) of the HAZs simulated under a heat input of 45 kJ/cm with ...
Yu Zhao, Qing Ma, Shenhua Song
doaj   +1 more source

Effect of laser-welding parameters on the heat input and weld-bead profile [PDF]

open access: yes, 2005
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

Effect of the morphology of the martensite-austenite phase on fracture of the weld heat affected zone in vanadium and niobium microalloyed steels [PDF]

open access: yes, 2010
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

Optimization of Processing Parameters for Picosecond Laser Cutting of Carbon Fiber Reinforced Polymers [PDF]

open access: yesMATEC Web of Conferences, 2022
With the increasingly widespread use of carbon fiber reinforced polymer in aerospace and automotive fields, the problem of difficult processing of carbon fiber reinforced polymer has become more prominent. Although laser processing can achieve more ideal
Ren Xingfei, Fan Jinwei, Wang Peitong
doaj   +1 more source

Change of mechanical properties in substrate during rewelding deposit

open access: yesResearch in Agricultural Engineering, 2011
A study was carried out to examine the influence of rewelding deposit of structural low carbon steel and also the changes which occur in heat-affected zone and subcritical zone during rewelding.
R. Chotěborský, P. Hrabě, A. Kabutey
doaj   +1 more source

Optimising the laser-welded butt-joints of medium carbon steel using RSM [PDF]

open access: yes, 2005
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

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