Results 31 to 40 of about 1,712,917 (264)

Effects of Fluorides in the Flux Cored Wire on the Oxygen Content of Weld Metal [PDF]

open access: yes한국해양공학회지, 2019
Various fluorides, i.e., CaF2, Na3AlF6, K2SiF6, MnF3, MgF2, were added to the flux cored wire, and their effects on the oxygen content of the weld metal were investigated.
Joo-hyeon Cha, Kook-soo Bang
doaj   +1 more source

Predicting Susceptibility to Solidification Cracking and Liquation Cracking by CALPHAD

open access: yesMetals, 2021
In welding, liquation cracking can occur in the partially melted zone, leaving open cracks along the edge of the weld bead. Likewise, solidification cracking can occur in the mushy zone, leaving open cracks inside the weld bead (which is called the weld ...
Sindo Kou
doaj   +1 more source

Investigation of metal flow in bridge die extrusion of Alloy 6063 and subsequent effect on surface quality and weld seam integrity [PDF]

open access: yes, 2013
This paper describes a detailed study of tube extrusion by simulation using finite element method (FEM). The finite element model used one-sixth of symmetry. The extrusion load, emperature evolution and metal flow were predicted.
Sheppard, Terry, Velay, Xavier, Niu, L.
core   +1 more source

Formation mechanism of macrosegregation in dissimilar-filler welding of aluminum alloys

open access: yesJournal of Materials Research and Technology, 2022
Dissimilar-filler welding is widely used for joining aluminum components. However, macrosegregation that will degrade the performance of the weld joint commonly occurs within the weld metal, because of the compositional difference between the filler and ...
Qipeng Dong   +4 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Microstructural evolution of Inconel 625 and Inconel 686CPT weld metal for clad carbon steel linepipe joints : a comparator study [PDF]

open access: yes, 2014
Microstructural evolution of Inconel 625 and Inconel 686CPT filler metals, used for the fusion welding of clad carbon steel linepipe, has been investigated and compared.
Mweemba, M   +8 more
core   +1 more source

Influencing mechanisms of C content and aging treatment on intergranular corrosion sensitivity of 316 stainless steel weld metals

open access: yesJournal of Materials Research and Technology
For analyzing the intergranular corrosion sensitivity of 316 stainless steel weld metals with different C contents, the intergranular corrosion behaviors of the weld metals under as-welded and different as-aged states were evaluated by both the H2SO4 ...
Shitong Wei, Langlang Zhao, Shanping Lu
doaj   +1 more source

Investigation of Process Stability and Weld Quality of Underwater Wet Flux-Cored Arc Welding of Low-Alloy High-Strength Steel with Oxy-Rutile Wire

open access: yesPolish Maritime Research, 2021
The paper described the experimental findings of underwater wet welding of E40 steel using self-shielded flux-cored wire with a TiO2-FeO-MnO slag system.
Li Hongliang   +5 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth   +6 more
wiley   +1 more source

Variation of chemical composition of high strength low alloy steels with different groove sizes in multi-pass conventional and pulsed current gas metal arc weld depositions

open access: yesDefence Technology, 2015
25 mm thick micro-alloyed HSLA steel plate is welded by multi-pass GMAW and P-GMAW processes using conventional V-groove and suitably designed narrow gap with 20 mm (NG-20) and 13 mm (NG-13) groove openings.
K. Devakumaran   +2 more
doaj   +1 more source

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