Skip to main content

Research Repository

Advanced Search

All Outputs (8)

The interdendritic-melt solidification control (IMSC) and its effects on the porosity and phase change of a Ni-based superalloy (2013)
Journal Article
Zheng, L., Zhang, G., Xiao, C., Lee, T. L., Han, B., Li, Z., …Mi, J. (2014). The interdendritic-melt solidification control (IMSC) and its effects on the porosity and phase change of a Ni-based superalloy. Scripta materialia, 74, 84-87. https://doi.org/10.1016/j.scriptamat.2013.11.001

A novel interdendritic-melt solidification control (IMSC) technique is developed to manufacture equiaxed Ni-based superalloy with much reduced porosity. The basic concept of IMSC is illustrated. The effects of IMSC on the porosity and phases of IN792... Read More about The interdendritic-melt solidification control (IMSC) and its effects on the porosity and phase change of a Ni-based superalloy.

Phase field study of the tip operating state of a freely growing dendrite against convection using a novel parallel multigrid approach (2013)
Journal Article
Guo, Z., Mi, J., Xiong, S., & Grant, P. (2014). Phase field study of the tip operating state of a freely growing dendrite against convection using a novel parallel multigrid approach. Journal of Computational Physics, 257(A), 278-297. https://doi.org/10.1016/j.jcp.2013.10.004

Alloy dendrite growth during solidification with coupled thermal-solute-convection fields has been studied by phase field modeling and simulation. The coupled transport equations were solved using a novel parallel-multigrid numerical approach with hi... Read More about Phase field study of the tip operating state of a freely growing dendrite against convection using a novel parallel multigrid approach.

Rich tomography techniques for the analysis of microstructure and deformation (2013)
Journal Article
Baimpas, N., Xie, M., Song, X., Hofmann, F., Abbey, B., Marrow, J., …Korsunsky, A. M. (2014). Rich tomography techniques for the analysis of microstructure and deformation. International Journal of Computational Methods, 11(3), Article 1343006. https://doi.org/10.1142/S0219876213430068

Until very recently, the three-dimensionality of the material world presented numerous challenges in terms of characterization, data handling, visualization, and modeling. For this reason, 2D representation of sections, projections, or surfaces remai... Read More about Rich tomography techniques for the analysis of microstructure and deformation.

The effects of annealing on the microstructure and the dynamic mechanical strength of a ZrCuNiAl bulk metallic glass (2013)
Journal Article
Huang, Y., Zheng, W., Fan, H., Wang, D., Shen, J., & Mi, J. (2013). The effects of annealing on the microstructure and the dynamic mechanical strength of a ZrCuNiAl bulk metallic glass. Intermetallics, 42, 192-197. https://doi.org/10.1016/j.intermet.2013.07.001

Isothermal annealing has been applied to a bulk metallic glass alloy, Zr50.7Cu28Ni9Al12.3. Nanocrystalline precipitates, mainly consisting of Ni3Zr and Ni42Zr 58 phases, appear from the amorphous matrix when annealed at 743 K for different times, and... Read More about The effects of annealing on the microstructure and the dynamic mechanical strength of a ZrCuNiAl bulk metallic glass.

Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields: An implementation of the parallel-multigrid approach (2013)
Journal Article
Guo, Z., Mi, J., Xiong, S., & Grant, P. S. (2013). Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields: An implementation of the parallel-multigrid approach. Metallurgical and Materials Transactions B, 44(4), 924-937. https://doi.org/10.1007/s11663-013-9861-5

Dendrite growth and morphology evolution during solidification have been studied using a phase field model incorporating melt convection effects, which was solved using a robust and efficient parallel, multigrid computing approach. Single dendrite gr... Read More about Phase field simulation of binary alloy dendrite growth under thermal- and forced-flow fields: An implementation of the parallel-multigrid approach.

In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation (2013)
Journal Article
Huang, Y. J., Khong, J. C., Connolley, T., & Mi, J. (2013). In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation. Scripta materialia, 69(3), 207-210. https://doi.org/10.1016/j.scriptamat.2013.03.016

The tensile behavior of TiZrNiCuBe metallic glass was studied using synchrotron X-ray diffraction and scanning electron microscopy. Shear band formation was carefully controlled by the introduction of a stress gradient due to a semi-circular notch. M... Read More about In situ study of the evolution of atomic strain of bulk metallic glass and its effects on shear band formation.

High speed imaging study of the dynamics of ultrasonic bubbles at a liquid-solid interface (2013)
Journal Article
Tan, D., & Mi, J. (2013). High speed imaging study of the dynamics of ultrasonic bubbles at a liquid-solid interface. Materials Science Forum, 765, 230-234. https://doi.org/10.4028/www.scientific.net/MSF.765.230

High speed imaging, including the ultrafast synchrotron X-ray imaging facility at the beamline 32-ID-B of the Advanced Photon Source (APS), was used to study in-situ (1) the dynamics of ultrasonic bubbles inside a water suspension with an acoustic fi... Read More about High speed imaging study of the dynamics of ultrasonic bubbles at a liquid-solid interface.

Ultrafast X-ray imaging and modelling of ultrasonic cavitations in liquid metal (2013)
Journal Article
Lee, T. L., Khong, J. C., Fezzaa, K., & Mi, J. (2013). Ultrafast X-ray imaging and modelling of ultrasonic cavitations in liquid metal. Materials Science Forum, 765, 190-194. https://doi.org/10.4028/www.scientific.net/MSF.765.190

The dynamics of ultrasonic bubbles in liquid metal are captured in-situ for the first time using the ultrafast X-ray phase contrast imaging facility housed at the Advanced Photon Source, Argonne National Laboratory, in the USA. The experimental obser... Read More about Ultrafast X-ray imaging and modelling of ultrasonic cavitations in liquid metal.