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3D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisation (2018)
Journal Article
Schlepütz, C. M., Zhao, Y., Du, W., Koe, B., Connolley, T., Irvine, S., …Mi, J. (2018). 3D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisation. Scripta materialia, 146, 321-326. doi:10.1016/j.scriptamat.2017.12.010

© 2017 Elsevier Ltd Synchrotron X-ray microtomography and skeletonisation method were used to study the true 3D network structures and morphologies of the Fe-rich intermetallic phases in recycled Al-5.0%Cu-0.6%Mn alloys with 0.5% and 1.0% Fe. It was... Read More about 3D characterisation of the Fe-rich intermetallic phases in recycled Al alloys by synchrotron X-ray microtomography and skeletonisation.

In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide film (2017)
Journal Article
Wang, F., Eskin, D., Connolley, T., Wang, C., Koe, B., King, A., …Mi, J. (2018). In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide film. Materials letters, 213, (303-305). doi:10.1016/j.matlet.2017.11.090. ISSN 0167-577X

While using synchrotron X-ray radiography for studying ultrasonic melt processing, the growth of the primary Al2Cu intermetallic phase on fragments of aluminium oxide film during solidification of a hypereutectic Al-35% Cu alloy was observed in-situ... Read More about In-situ synchrotron X-ray radiography observation of primary Al2Cu intermetallic growth on fragments of aluminium oxide film.

A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processing (2017)
Journal Article
Wang, F., Eskin, D., Mi, J., Wang, C., Koe, B., King, A., …Connolley, T. (2017). A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processing. Acta Materialia, 141, 142-153. https://doi.org/10.1016/j.actamat.2017.09.010

Using synchrotron X-ray high speed radiography, the fragmentation and refinement of pre-existing primary Al2Cu intermetallic dendrites induced by ultrasonic melt processing in a hypereutectic Al-35% Cu alloy were studied in-situ and in real time. The... Read More about A synchrotron X-radiography study of the fragmentation and refinement of primary intermetallic particles in an Al-35 Cu alloy induced by ultrasonic melt processing.

In situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloys (2017)
Journal Article
Wang, F., Tzanakis, I., Eskin, D., Mi, J., & Connolley, T. (2017). In situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloys. Ultrasonics Sonochemistry, 39, 66-76. https://doi.org/10.1016/j.ultsonch.2017.03.057

The cavitation-induced fragmentation of primary crystals formed in Al alloys were investigated for the first time by high-speed imaging using a novel experimental approach. Three representative primary crystal types, Al3Ti, Si and Al3V with different... Read More about In situ observation of ultrasonic cavitation-induced fragmentation of the primary crystals formed in Al alloys.

On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys (2017)
Journal Article
Wang, F., Eskin, D. G., Khvan, A. V., Starodub, K. F., Lim, J. J., Burke, M. G., …Mi, J. (2017). On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys. Scripta materialia, 133, 75-78. https://doi.org/10.1016/j.scriptamat.2017.02.027

For the first time, experimental evidence is presented for the occurrence of a eutectic reaction in dilute Al-Zr alloys solidified at cooling rates from 0.5 to 5 K/s. Particles which formed at grain boundaries during solidification were confirmed by... Read More about On the occurrence of a eutectic-type structure in solidification of Al-Zr alloys.

Characterization of the residual stresses in spray-formed steels using neutron diffraction (2015)
Journal Article
Lee, T. L., Mi, J., Zhao, S. L., Fan, J. F., Zhang, S. Y., Kabra, S., & Grant, P. S. (2015). Characterization of the residual stresses in spray-formed steels using neutron diffraction. Scripta materialia, 100, 82-85. https://doi.org/10.1016/j.scriptamat.2014.12.019

Neutron diffraction was used to characterize the residual stresses in an as-sprayed tube-shaped steel preform. The measured residual stress distributions were compared with those simulated using finite element method by taking into account the effect... Read More about Characterization of the residual stresses in spray-formed steels using neutron diffraction.

In situ synchrotron x-ray study of ultrasound cavitation and its effect on solidification microstructures (2014)
Journal Article
Mi, J., Tan, D., & Lee, T. L. (2015). In situ synchrotron x-ray study of ultrasound cavitation and its effect on solidification microstructures. Metallurgical and Materials Transactions B, 46(4), 1615-1619. https://doi.org/10.1007/s11663-014-0256-z

Considerable progress has been made in studying the mechanism and effectiveness of using ultrasound waves to manipulate the solidification microstructures of metallic alloys. However, uncertainties remain in both the underlying physics of how microst... Read More about In situ synchrotron x-ray study of ultrasound cavitation and its effect on solidification microstructures.

The onset of plasticity of a Zr-based bulk metallic glass (2014)
Journal Article
Huang, Y., Khong, J. C., Connolley, T., & Mi, J. (2014). The onset of plasticity of a Zr-based bulk metallic glass. International Journal of Plasticity, 60, 87-100. https://doi.org/10.1016/j.ijplas.2014.05.003

The deformation behaviors of a Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glassy alloy under step-controlled tensile loads have been studied in situ and systematically using scanning electron microscopy and synchrotron X-ray diffraction. A circular h... Read More about The onset of plasticity of a Zr-based bulk metallic glass.

The effect of cooling rate on the wear performance of a ZrCuAlAg bulk metallic glass (2014)
Journal Article
Huang, Y., Fan, H., Wang, D., Sun, Y., Liu, F., Shen, J., …Mi, J. (2014). The effect of cooling rate on the wear performance of a ZrCuAlAg bulk metallic glass. Materials and Design, 58, 284-289. https://doi.org/10.1016/j.matdes.2014.01.067

In the present work, the local atomic ordering and the wear performance of ZrCuAlAg bulk metallic glass (BMG) samples with different diameters have been studied using transmission electron microscopy (TEM) plus autocorrelation function analysis, and... Read More about The effect of cooling rate on the wear performance of a ZrCuAlAg bulk metallic glass.

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). doi:10.1016/j.jcp.2013.10.004. ISSN 0021-9991

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.

Modelling the electromagnetic separation of non-metallic particles from liquid metal flowing through a two-stage multichannel (2011)
Journal Article
Shu, D., Mi, J., Wang, J., & Sun, B. (2011). Modelling the electromagnetic separation of non-metallic particles from liquid metal flowing through a two-stage multichannel. Isij International, 51(1), 21-26. https://doi.org/10.2355/isijinternational.51.21

A two-stage multichannel was designed to increase the efficiency of separating non-metallic particles from liquid metal flowing through an alternating magnetic field. Numerical method was developed to calculate the particle concentration and separati... Read More about Modelling the electromagnetic separation of non-metallic particles from liquid metal flowing through a two-stage multichannel.

An Al-Si-Ti hierarchical metal-metal composite manufactured by co-spray forming (2011)
Journal Article
Kelly, A. J., Mi, J., Sinha, G. V., Krug, P., Crosa, F., Audebert, F., & Grant, P. S. (2011). An Al-Si-Ti hierarchical metal-metal composite manufactured by co-spray forming. Journal of Materials Processing Technology, 211(12), (2045-2049). doi:10.1016/j.jmatprotec.2011.07.001. ISSN 0924-0136

Spray forming with co-injection of a solid particulate phase to form a homogeneous distribution within the final spray formed billet has been studied as a new route to manufacturing metal-metal composites at large scale with negligible oxide. 12 wt%T... Read More about An Al-Si-Ti hierarchical metal-metal composite manufactured by co-spray forming.

A quantitative study of solute diffusion field effects on heterogeneous nucleation and the grain size of alloys (2011)
Journal Article
Shu, D., Sun, B., Mi, J., & Grant, P. S. (2011). A quantitative study of solute diffusion field effects on heterogeneous nucleation and the grain size of alloys. Acta Materialia, 59(5), (2135-2144). doi:10.1016/j.actamat.2010.12.014. ISSN 1359-6454

The nucleation ability of inoculating particles inside the solute diffusion zone around growing grains during alloy solidification is studied using a spherical, equiaxed dendritic grain model coupled with a new modified free growth model to predict t... Read More about A quantitative study of solute diffusion field effects on heterogeneous nucleation and the grain size of alloys.

Modelling the shape and thermal dynamics of Ni superalloy rings during spray forming. Part 2 : Thermal modelling - Heat flow and solidification (2008)
Journal Article
Mi, J., & Grant, P. S. (2008). Modelling the shape and thermal dynamics of Ni superalloy rings during spray forming. Part 2 : Thermal modelling - Heat flow and solidification. Acta Materialia, 56(7), (1597-1608). doi:10.1016/j.actamat.2007.12.022. ISSN 1359-6454

In Part 1 of this paper, a model was described to simulate the dynamic shape evolution of Ni superalloy rings during spray forming, concentrating on the effects of droplet splashing and redeposition. In this part, a companion model is presented that... Read More about Modelling the shape and thermal dynamics of Ni superalloy rings during spray forming. Part 2 : Thermal modelling - Heat flow and solidification.

Multiphysics modelling of the spray forming process (2007)
Journal Article
Mi, J., Grant, P., Fritsching, U., Belkessam, O., Garmendia, I., & Landaberea, A. (2008). Multiphysics modelling of the spray forming process. Materials Science and Engineering: A, 477(1-2), (2-8). doi:10.1016/j.msea.2007.08.083. ISSN 0921-5093

An integrated, multiphysics numerical model has been developed through the joint efforts of the University of Oxford (UK), University of Bremen (Germany) and Inasmet (Spain) to simulate the spray forming process. The integrated model consisted of fou... Read More about Multiphysics modelling of the spray forming process.