Salar Niknafs

University of Wollongong | UOW

Intermetallic γ‐TiAl‐based alloys are promising materials for light‐weight structures in high‐temperature application. Their material properties are highly dependent on the microstructural evolution during heat treatments. High‐temperature laser‐scanning confocal microscopy (HTLSCM) is applied for studying grain growth in the single β phase region...

Solid-state phase transformations and grain growth in an intermetallic γ-TiAl based alloy were examined using a confocal laser-scanning microscope. This apparatus allows the in-situ visualization of the microstructural development at high temperatures. The sample is thus placed into a furnace and a predetermined temperature profile is followed, whi...

Solid-state phase transformations and grain growth of an intermetallic γ-TiAl alloy were investigated in-situ using high-temperature laser scanning confocal microscopy (HTLSCM). During isothermal annealing in the single β-phase region, significant grain coarsening was observed. On cooling beneath the β-transus temperature with different rates, a CC...

Dendritic microstructures are most dominant patterns in solidified alloys. The microstructural features of these structures control the segregation profiles of solute elements in the interdendritic regions, thus determining the mechanical properties of cast structures. In this study, a 2D model of solid/liquid interface instability in a low carbon...

Solidification microstructure is a defining link between production techniques and the resulting mechanical properties of cast metals and in particular steel. The microstructural scales of these structures control the segregation profiles of solute elements in the interdendritic regions, thus determining the mechanical properties of the cast struct...

Solidification microstructure is a defining link between production techniques and the mechanical properties of metals and in particular steel. Due to the difficulty of conducting solidification studies at high temperature, knowledge of the development of solidification microstructure in steel is scarce. In this study, a laser-scanning confocal mic...

During continuous casting of steel, the delta-ferrite to austenite phase transition occurs following solidification in the meniscus region of the solidifying strand. It is of great industrial significance to gain a better understanding of the nature and mechanism of this reaction because product quality is in large measure determined by events occu...

During continuous casting of steel, the delta-ferrite to austenite phase transition occurs following solidification in the meniscus region of the solidifying strand. It is of great industrial significance to gain a better understanding of the nature and mechanism of this reaction because product quality is in large measure determined by events occu...