Browsing NTNU Open by Author "Combeau, Hervé"
Now showing items 1-6 of 6
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A simplified three-phase model of equiaxed solidification for the prediction of microstructure and macrosegregation in castings
Tveito, Knut Omdal; Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Journal article, 2018)Macrosegregation is a result of the interplay of various transport mechanisms, including natural convection, solidification shrinkage, and grain motion. Experimental observations also indicate the impact of grain morphology, ... -
Analysis of the Interplay Between Thermo-solutal Convection and Equiaxed Grain Motion in Relation to Macrosegregation Formation in AA5182 Sheet Ingots
Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Peer reviewed; Journal article, 2019)Shrinkage induced flow, thermo-solutal convection and equiaxed grain motion are the major transport mechanisms contributing to macrosegregation formation in aluminum alloys produced through Direct Chill casting. Experimental ... -
Application of an Equiaxed Grain Growth and Transport Model to Study Macrosegregation in a DC Casting Experiment
Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Peer reviewed; Journal article, 2019)A simplified three-phase, multiscale macrosegregation model which describes the growth kinetics of equiaxed grains and the coupling between microstructure morphology and the macroscopic transport has been proposed previously. ... -
Impact of inlet flow on macrosegregation formation accounting for grain motion and morphology evolution in DC casting of aluminium
Pakanati, Akash; Tveito, Knut Omdal; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Peer reviewed; Journal article, 2018) -
Investigation of Macrosegregation Formation in Aluminium DC Casting for Different Alloy Systems
Pakanati, Akash; M'hamdi, Mohammed; Combeau, Hervé; Založnik, Miha (Journal article, 2018)Direct chill (DC) casting of aluminum involves alloys employing different solute elements. In this article, a qualitative analysis and comparison of macrosegregation formation is presented for three different alloy systems: ... -
Towards 3D Modelling of Macrosegregation Formation and Modification in DC Casting of Aluminium Alloys Accounting for Equiaxed Grain Growth and Transport
Pakanati, Akash (Doctoral theses at NTNU;2019:34, Doctoral thesis, 2019)Macrosegregation refers to the inhomogeneous distribution of solute elements at the scale of cast product. It is a severe defect affecting the quality of cast product produced through Direct Chill (DC) casting process. ...