Results 11 to 20 of about 687,390 (408)

The effect of heat input on microstructure and HAZ expansion in dissimilar joints between API5L X80 / DSS 2205 steels using thermal cycles

open access: yesRevista de Metalurgia, 2022
In this research, the effect of the shielded metal arc welding (SMAW) process heat input upon the microstructure and development of the heat-affected zone in the dissimilar joint of API 5L X80/DS5 2205 steels was investigated by recording the thermal ...
Seyed Meisam Zahraei   +2 more
doaj   +1 more source

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

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

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

Experimental investigation on laser cutting of PMMA sheets: Effects of process factors on kerf characteristics

open access: yesJournal of Materials Research and Technology, 2021
This paper reports an experimental investigation on continuous CO2 laser cutting of polymethylmethacrylate (PMMA) sheet. The influence of four process factors (laser power, cutting speed, assisting gas pressure and sheet thickness) on five process ...
Ahmed B. Khoshaim   +4 more
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

Tensile and superelastic behaviors of Ti-35Nb-2Ta-3Zr with gradient structure

open access: yesMaterials & Design, 2020
We investigated the tensile and superelastic behaviors of Ti-35Nb-2Ta-3Zr processed by double-faced friction stir processing that results in a roughly 2 times higher yield strength with an elongation of 37%.
Liqiang Wang   +8 more
doaj   +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

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

Home - About - Disclaimer - Privacy