A.B. Phillion
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View article: Microstructure Evolution in Directionally Solidified Fe–C–Mn–(Si) Peritectic Steels
Microstructure Evolution in Directionally Solidified Fe–C–Mn–(Si) Peritectic Steels Open
Bridgman solidification experiments are carried out on Fe–C–Mn–Si peritectic steels to clarify how growth velocity ( V ) and alloy composition govern microstructural evolution. At velocities of 10–120 μm s −1 , the microstructures exhibit …
View article: Investigation of the Hydrostatic Pressure Effect on the Formation of Hot Tearing in the AA6111 Alloy During Direct Chill Casting of Rectangular Ingots
Investigation of the Hydrostatic Pressure Effect on the Formation of Hot Tearing in the AA6111 Alloy During Direct Chill Casting of Rectangular Ingots Open
The formation of hot tearing during direct chill casting of aluminum alloys, specifically AA6111, is a significant challenge in the production of ingots for industrial applications. This study investigates the role of hydrostatic pressure …
View article: Dissolution kinetics and mechanisms of calcium aluminate inclusions in CaO-Al2O3-SiO2-(MgO) steelmaking slags
Dissolution kinetics and mechanisms of calcium aluminate inclusions in CaO-Al2O3-SiO2-(MgO) steelmaking slags Open
The dissolution kinetics and mechanisms of solid calcium aluminate inclusions (CaO∙2Al2O3 (CA2) and CaO∙6Al2O3 (CA6)) in CaO-Al2O3-SiO2-(MgO) metallurgical slags at 1550 °C were investigated using high temperature confocal laser scanning m…
View article: Modeling the Impact of Varying Levels of Inclusion Adhesion on Deposition in a Pilot‐Scale Nozzle
Modeling the Impact of Varying Levels of Inclusion Adhesion on Deposition in a Pilot‐Scale Nozzle Open
The deposition and accumulation of inclusions is the dominant mechanism in nozzle clogging of the submerged entry nozzle. Previous modeling attempts of inclusion deposition have assumed that any contact between the inclusion and nozzle wal…
View article: Evaluation of microstructure heterogeneity in INCONEL 625 thin-wall fabricated by Laser Powder Bed Fusion additive manufacturing
Evaluation of microstructure heterogeneity in INCONEL 625 thin-wall fabricated by Laser Powder Bed Fusion additive manufacturing Open
This study provides a thorough investigation of microstructural heterogeneity and its relationship to the mechanical properties of Inconel 625 (IN625) alloy in as-built Laser Powder Bed Fusion (LPBF) parts. Specifically, detailed high-reso…
View article: Analysis of microscopy techniques to measure segregation in continuous‐cast steel slabs
Analysis of microscopy techniques to measure segregation in continuous‐cast steel slabs Open
Summary The accurate characterisation of centreline segregation requires precise measurements of composition variations over large length scales (10 ) across the centreline of the cast product, while having high resolution, sufficient to q…
View article: A first-year integrated project-based course: Students' experience and engagement working in teams amid COVID-19
A first-year integrated project-based course: Students' experience and engagement working in teams amid COVID-19 Open
The Faculty of Engineering at McMaster University implemented its largest curricular change through the PIVOT. First-year engineering students now take a 13-unit ENGINEER 1P13 that integrates multiple interdisciplinary projects allowing st…
View article: Connectivity in binary mixtures of spherical particles
Connectivity in binary mixtures of spherical particles Open
Mono- and poly-disperse assemblies of spherical particles are investigated in terms of their average and partial coordination numbers by means of X-ray microtomography using a novel morphology-based image processing method to statistically…
View article: Simulation of Ladle Refining Reactions in Si–Mn‐Killed Steel
Simulation of Ladle Refining Reactions in Si–Mn‐Killed Steel Open
Steel quality, to a large extent, is controlled by ladle refining reactions. The understanding of such reactions can help to prevent the formation of unwanted phases and improve the overall high‐temperature process control. A new approach,…
View article: Experiential learning in engineering education: A systematic literature review
Experiential learning in engineering education: A systematic literature review Open
Background The evolving transformations of our society at large, academic institutions, and engineering discipline in the 21st century have profound implications for the nature of experiential learning being offered in engineering educatio…
View article: Influence of mould level instability on the unevenness of solidified shell deformations during continuous casting
Influence of mould level instability on the unevenness of solidified shell deformations during continuous casting Open
The influence of mould level instability during continuous casting on the unevenness of the initial solidified shell in hypo-peritectic steels has been investigated. Water model experiments and in-plant casting experiments revealed that mo…
View article: Deep learning‐based hybrid reconstruction algorithm for fibre instance segmentation from <scp>3D</scp> x‐ray tomographic images
Deep learning‐based hybrid reconstruction algorithm for fibre instance segmentation from <span>3D</span> x‐ray tomographic images Open
3D x‐ray tomography is a powerful scanning technique used for generating images of complex fibre structures. A novel machine‐learning algorithm to identify and separate individual fibres using 3D images is proposed in this article. The dev…
View article: A 3D simulation of grain structure evolution during laser rescanning process of powder bed fusion additive manufacturing
A 3D simulation of grain structure evolution during laser rescanning process of powder bed fusion additive manufacturing Open
Laser powder bed fusion (LPBF) is an extensively used additive manufacturing process that can build metal parts with complicated geometric designs. However, because of the rapid solidification conditions and the layer-by-layer building, it…
View article: A phase field methodology for simulating the microstructure evolution during laser powder bed fusion in-situ alloying process
A phase field methodology for simulating the microstructure evolution during laser powder bed fusion in-situ alloying process Open
A recently-developed [1] multi-component phase field model has been utilized to investigate microstructure evolution during in-situ alloying of a blended elemental Ti-1Al-8V-5Fe alloy powder via the Laser Powder Bed Fusion process. The pro…
View article: Non-metallic inclusion (NMI) deposition in a slide-gate submerged entry nozzle (SEN)
Non-metallic inclusion (NMI) deposition in a slide-gate submerged entry nozzle (SEN) Open
Clogging of the submerged entry nozzle (SEN) is a common and persistent issue in the continuous casting process for steel alloys. The dominant clogging mechanism has been attributed to the deposition and accumulation of non-metallic inclus…
View article: Microstructural Characterization and Mechanical Properties Investigation of Nemalloy HE700 alloy: Effect of Pre-Solidified Grains
Microstructural Characterization and Mechanical Properties Investigation of Nemalloy HE700 alloy: Effect of Pre-Solidified Grains Open
Structural plate castings of Nemalloy HE700 alloy, an Al-Fe eutectic alloy system with Zn and Mg as precipitation strengtheners were produced through high vacuum high pressure die casting (HVHPDC) and designed as an alternative to existing…
View article: Visualisation of the 3D Microstructure of a Monodisperse Fibre Assembly Under Uniaxial Compression
Visualisation of the 3D Microstructure of a Monodisperse Fibre Assembly Under Uniaxial Compression Open
In this work we visualize the evolution of the 3D microstructure of a mono-disperse nylon fibre floc undergoing uniaxial compression.In total seven stages of compression were visualized using X-ray microcomputed tomography.We observe that …
View article: Calculation of Initial Stage of Solidified Shell Deformation during δ to γ Transformation in Mold
Calculation of Initial Stage of Solidified Shell Deformation during δ to γ Transformation in Mold Open
Solidification shell deformations within the mold during continuous casting have been calculated in order to clarify the influence of mold flux infiltration variability on the cooling rate, the width of the low heat flux region, the height…
View article: Solidification microstructure selection maps for laser powder bed fusion of multicomponent alloys
Solidification microstructure selection maps for laser powder bed fusion of multicomponent alloys Open
Solidification Microstructure Selection (SMS) maps provide a simple yet effective approach to predict the non-equilibrium solidification microstructure and grain morphology during Additive Manufacturing. In this study, SMS maps have been c…