Results 11 to 20 of about 7,004 (249)

Microstructure Characterization of SAW and TIG Welded 25Cr2Ni2MoV Rotor Steel Metal

open access: yesMetals, 2020
Low pressure turbine rotors are manufactured by welding thick sections of 25Cr2Ni2MoV rotor steel using tungsten inert gas (TIG) backing weld, and submerged arc welding (SAW) filling weld.
Chaoyu Han   +5 more
doaj   +1 more source

Effect of Heat Input on Microstructure and Corrosion Behavior of High Strength Low Alloy Steel Welds

open access: yesInternational Journal of Electrochemical Science, 2021
High strength low alloy (HSLA) steel was welded by metal active gas arc welding (MAG), and the effect of heat input on microstructure and corrosion behavior of HSLA welds was investigated by optical microscope (OM), scanning electron microscopy (SEM ...
Hua Qin, Yingchun Tang, Ping Liang
doaj   +1 more source

Nanomodification is an effective methodfor forming the structure of the weld metal. Part II. [PDF]

open access: yesНанотехнологии в строительстве, 2020
The short-term existence of the melt in the weld pool and its overheating, a large temperature gradient near the interface and two-dimensional crystallization centers, in the form of fused grains at the weld pool boundary, reduce the probability and rate
Sizintsev Sergey Valerievich   +3 more
doaj   +1 more source

The effect of flux chemistry on element transfer in Submerged Arc Welding: application of thermochemical modelling

open access: yesJournal of Materials Research and Technology, 2021
Post-weld slag and weld metal analyses were used to interpret the effects of different commercial flux compositions on element transfer between molten flux (slag) and weld metal in Submerged Arc Welding (SAW).
T. Coetsee   +3 more
doaj   +1 more source

Effect of Thermal Ageing at 400 °C on the Microstructure of Ferrite-Austenite Interface of Nickel-Base Alloy Narrow-Gap Dissimilar Metal Weld

open access: yesMetals, 2020
Dissimilar metal welds (DMWs) are a key design feature in nuclear power systems, typically involving ferritic low-alloy steels (LAS), stainless steels (SS), and nickel-base alloys. They are, however, a potential concern regarding the structural integrity
Matias Ahonen   +7 more
doaj   +1 more source

Investigation on the Dynamic Behavior of Weld Pool and Weld Microstructure during DP-GMAW for Austenitic Stainless Steel

open access: yesMetals, 2020
The influence of heat and droplet transfer into weld pool dynamic behavior and weld metal microstructure in double-pulsed gas metal arc welding (DP-GMAW) was investigated by the self-designed high-speed welding photography system. The heat input, the arc
Tao Chen   +5 more
doaj   +1 more source

Study on toughening mechanism of Ti on weld metal of high strength steel

open access: yesMaterials Research Express, 2021
The effect of Ti element on acicular ferrite microstructure of high strength steel weld was studied by scanning electron microscope(SEM), Transmission electron microscopy(TEM) and EDX spectrum analysis.
Xu Han   +3 more
doaj   +1 more source

Cyclic Stress Response and Fracture Behaviors of Alloy 617 Base Metal and Weld Joints under LCF Loading

open access: yesAdvances in Materials Science and Engineering, 2015
Cyclic stress response and fracture behaviors of Alloy 617 base metal (BM) and Alloy 617 weld joints (WJ) are investigated under strain controlled low cycle fatigue (LCF) loading.
Seon Jin Kim   +3 more
doaj   +1 more source

SSRT properties of austenitic stainless steel weld metals in hydrogen gas at -45 °C and 106 MPa

open access: yesNihon Kikai Gakkai ronbunshu, 2016
In order to study the hydrogen embrittlement behavior of austenitic stainless steel weld metals, slow strain rate tensile (SSRT) tests were performed in 106 MPa hydrogen gas at -45 °C.
Saburo MATSUOKA   +5 more
doaj   +1 more source

Fracture characteristics of dissimilar electron-beam welded joints between Cr-Mo steel and austenitic steel AISI 304

open access: yesAIP Advances, 2019
The mechanical and fracture behaviors of electron-beam welded (EBW) joints between Cr-Mo steel (CS) and austenitic stainless steel type AISI 304 (SS) were investigated.
Yasser Fouad, H. Marouani
doaj   +1 more source

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