Investigation on the Manufacture of a Large‐Scale Aluminum Alloy Ingot: Microstructure and Macrosegregation
Sign Up to like & getrecommendations! Published in 2017 at "Advanced Engineering Materials"
DOI: 10.1002/adem.201600375
Abstract: A large-scale cylindrical 2219 Al alloy ingot (1 250 mm in diameter and 3 300 mm in length) is manufactured using a special DC casting facility. Macrosegregation of major element (Cu) at different casting stages is determined on three… read more here.
Keywords: large scale; manufacture large; macrosegregation; alloy ingot ... See more keywords
Effect of As-Cast Structure and Macrosegregation on Mechanical Properties in Direct-Quenched Low-Alloy Ultrahigh-Strength Steel
Sign Up to like & getrecommendations! Published in 2020 at "Metallurgical and Materials Transactions B"
DOI: 10.1007/s11663-020-01997-4
Abstract: The effect of as-cast structure and macrosegregation on the mechanical properties of a direct-quenched low-alloy martensitic ultrahigh-strength aluminum killed and calcium treated steel cast at different superheats was studied. Samples from the castings were laboratory… read more here.
Keywords: cast structure; macrosegregation; effect; effect cast ... See more keywords
Simulation of macrosegregation in a 36-t steel ingot using a multiphase model
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Minerals, Metallurgy and Materials"
DOI: 10.1007/s12613-019-1875-9
Abstract: Macrosegregation is the major defect in large steel ingots caused by solute partitioning and melt convection during casting. In this study, a three-phase (liquid, columnar dendrites, and equiaxed grains) model is proposed to simulate macrosegregation… read more here.
Keywords: steel ingot; macrosegregation; simulation macrosegregation; model ... See more keywords
Influences of superheat and cooling intensity on macrostructure and macrosegregation of duplex stainless steel studied by thermal simulation
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Iron and Steel Research International"
DOI: 10.1007/s42243-021-00592-4
Abstract: The influences of superheat and cooling intensity on macrostructure and macrosegregation of one new kind duplex stainless steel (DSS) were studied. Thermal simulation equipment was applied to prepare samples, which could reproduce the industrial processes… read more here.
Keywords: cooling intensity; steel; macrostructure macrosegregation; macrosegregation ... See more keywords
Geometrical effect on macrosegregation formation during unidirectional solidification of Al–Si alloy
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Materials Processing Technology"
DOI: 10.1016/j.jmatprotec.2020.116913
Abstract: Abstract In the production of single-crystal turbine blades for use in aircraft engines with unidirectional solidification techniques, it is confirmed that the casting geometry had great influence on the formation of macrosegregation or spurious/stray crystals.… read more here.
Keywords: solidification; formation; geometry; geometrical effect ... See more keywords
Macrosegregation under new flow pattern and temperature distribution induced by electromagnetic swirling flow in nozzle during continuous casting of square billet
Sign Up to like & getrecommendations! Published in 2020 at "Journal of materials research and technology"
DOI: 10.1016/j.jmrt.2020.03.088
Abstract: Abstract Forced convection induced by mold electromagnetic stirrer (M-EMS) improves solidification structure in continuous casting of high carbon square billet, but vigorous stirring also causes macrosegregation. In this study, electromagnetic swirling flow in nozzle (EMSFN)… read more here.
Keywords: macrosegregation; electromagnetic swirling; swirling flow; continuous casting ... See more keywords
Predictions of solute mixing in a weld pool and macrosegregation formation during dissimilar-filler welding of aluminum alloys: Modeling and experiments
Sign Up to like & getrecommendations! Published in 2020 at "Journal of materials research and technology"
DOI: 10.1016/j.jmrt.2020.08.109
Abstract: Abstract The solute mixing phenomena of filler and base metal melts during dissimilar-filler metal-inert gas (MIG) welding are simulated by a multi-phase lattice Boltzmann (LB) model for predicting macrosegregation formation in the weld joint. The… read more here.
Keywords: filler; formation; weld pool; macrosegregation ... See more keywords
A new approach to control centerline macrosegregation in Al-Mg-Si alloys during twin roll continuous casting
Sign Up to like & getrecommendations! Published in 2017 at "Materials Letters"
DOI: 10.1016/j.matlet.2016.12.109
Abstract: Abstract Al-1.0%Mg-1.2%Si sheets were processed by twin-roll casting process under static magnetic field, pulse electric current field and combined fields. The evolution of centerline macro-segregation in each processing condition was studied. The study suggests that… read more here.
Keywords: macrosegregation; field; static magnetic; twin roll ... See more keywords
Reconstruction of the Boundary Condition in the Binary Alloy Solidification Problem with the Macrosegregation and the Material Shrinkage Phenomena Taken into Account
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DOI: 10.1080/01457632.2019.1699300
Abstract: Abstract In this paper we solve the inverse problem of the binary alloy solidification including two phenomena: macrosegregation and creation of the air gap between the cast and the mold in result of the metal… read more here.
Keywords: binary alloy; alloy solidification; macrosegregation; solidification ... See more keywords
Discussion on Modeling Capability for Macrosegregation
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DOI: 10.1515/htmp-2016-0133
Abstract: Macrosegregation originates from the solute partitioning at the liquid-solid interface and the relative motion between liquid and solid phases during solidification of metal alloys. A suitable macrosegregation model should incorporate solidification thermodynamics, crystal growth kinetics,… read more here.
Keywords: macrosegregation; modeling capability; capability macrosegregation; discussion modeling ... See more keywords