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Article
Open AccessIn-situ X-ray monitoring of solidification and related processes of metal alloys
X-ray radioscopy enables the in-situ monitoring of metal alloy processes and then gives access to crucial information on the dynamics of the underlying phenomena. In the last decade, the utilisation of this po...
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Article
Open AccessOn the Deformation of Dendrites During Directional Solidification of a Nickel-Based Superalloy
Synchrotron X-ray imaging has been used to examine in situ the deformation of dendrites that takes place during the solidification of a nickel-based superalloy. By combining absorption and diffraction contrast im...
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Article
Open AccessThermo-Electric-Magnetic Hydrodynamics in Solidification: In Situ Observations and Theory
Solidification of liquid metals contains all the ingredients for the development of the thermo-electric (TE) effect, namely liquid–solid interface and temperature gradients. The combination of TE currents with...
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Article
Columnar and Equiaxed Solidification of Al-7 wt.% Si Alloys in Reduced Gravity in the Framework of the CETSOL Project
During casting, often a dendritic microstructure is formed, resulting in a columnar or an equiaxed grain structure, or leading to a transition from columnar to equiaxed growth (CET). The detailed knowledge of ...
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Chapter and Conference Paper
Overview of In Situ X-Ray Studies of Light Alloy Solidification in Microgravity
Gravity has significant effects on alloy solidification, primarily due to thermosolutal convection and solid phase buoyancy. Since 2004, the European Space Agency has been supporting investigation of these eff...
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Chapter and Conference Paper
In Situ Investigation of the Effects of Gravity Level Variations on the Directional Solidification Microstructures During Parabolic Flights
In the framework of an ESA-MAP project entitled XRMON, directional solidification experiments of Al — 20 wt% Cu with in situ and real-time X-ray radiography were carried out during Parabolic Flight campaigns. ...
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Article
In Situ Investigation of Dendrite Deformation During Upward Solidification of Al-7wt.%Si
The in situ investigation of dendrite deformation during solidification processing is an ongoing challenge because of the technical difficulties in carrying out experimental observations and direct measurements i...
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Article
XRMON-GF Experiments Devoted to the in Situ X-ray Radiographic Observation of Growth Process in Microgravity Conditions
Structural material properties are strongly related to the solidified microstructures, thus precise control of microstructural formation and selection are crucial in engineering. As most of the phenomena invol...
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Article
In Situ X-Ray Video Microscopy as a Tool in Solidification Science
Over the last 20 years, time-resolved high-resolution x-ray imaging techniques have become established as methods of choice for in situ studies of solidification microstructure formation in metallic alloys. Using...
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Article
In situ analysis of dendritic equiaxed microstructure formation in Al-Cu alloys by synchrotron X-ray radiography
This paper reports on experiments dedicated to equiaxed solidification carried out on Al — 10 wt% Cu alloy at the European Synchrotron Radiation Facility (ESRF) in Grenoble-France. Equiaxed growth was achieved...
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Article
Directional solidification processing on CET in Al-based alloys
The control of the transition from columnar to equiaxed (CET) dendrite microstructure is an important point to obtain desired final properties of industrial products. The objective is to understand how the for...
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Article
Open AccessIn-Situ and Real-Time Analysis of the Formation of Strains and Microstructure Defects during Solidification of Al-3.5 Wt Pct Ni Alloys
Alloy solidification was investigated in situ and real time by using a unique experimental setup developed at the European Synchrotron Radiation Facility (ESRF) combining both synchrotron X-ray radiography and to...
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Article
In-Situ and Real-Time Investigation of Columnar-to-Equiaxed Transition in Metallic Alloy
In this article, we present a review of observations during Al-3.5 wt pct Ni alloy solidi.cation experiments performed at the European Synchrotron Radiation Facility (ESRF) in Grenoble. These experiments provi...
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Article
Tailoring of dendritic microstructure in solidification processing by crucible vibration/rotation
Directional solidification of alloys, which allows the independent control of growth parameters (pulling velocity, temperature gradient), is an experimental method of choice for the investigation of many funda...
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Chapter
Localized Morphologies Observed in Directional Solidification of Binary Alloys into Three-Dimensional Flows
In directional growth of three-dimensional binary alloys, fluid flow in-duces pattern localization at the solidification front. In particular, morphological instability of the smooth solid-liquid interface and...
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Article
Statistical analysis of the disorder of two-dimensional cellular arrays in directional solidification
By introducing a weighted Wigner-Seitz construction and, for the first time in directional solidification, using the minimal spanning tree (MST) approach and the (m,σ)-diagram, the statistical analysis of the top...
