Remelting and solidification of a 6082 Al alloy containing submicron yttria particles: 4D experimental study by in situ X-ray microtomography

Daudin, Rémi; Terzi, S.; Lhuissier, Pierre; Salvo, Luc; Boller, Élodie

doi:10.1016/j.matdes.2015.07.141

Cited by 22 publications

(8 citation statements)

References 29 publications

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“…Deformation and fracture are still common interest for metals and alloys [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ], foams and porous materials [ 11 , 14 , 43 , 44 , 45 , 46 ], and composites [ 13 , 47 , 48 , 49 ]. XRT has also been considerably extended with other in situ measurements including materials processing [ 50 , 51 , 52 , 53 , 54 , 55 ], materials interaction with specified conditions involving extreme temperature [ 56 , 57 ], corrosion [ 58 , 59 , 60 ], electrochemical environments, as in batteries [ 61 , 62 , 63 ], etc. The finite element (FE) method has also been employed to analyze the dynamic processes with the change of applied fields based on 3D models from XRT [ 16 , 64 , 65 , 66 ].…”

Section: Introductionmentioning

confidence: 99%

Correlation of Materials Property and Performance with Internal Structures Evolvement Revealed by Laboratory X-ray Tomography

Zhang

Wang

2018

Materials

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Although X-rays generated from a laboratory-based tube cannot be compared with synchrotron radiation in brilliance and monochromaticity, they are still viable and accessible in-house for ex situ or interrupted in situ X-ray tomography. This review mainly demonstrates recent works using laboratory X-ray tomography coupled with the measurements of properties or performance testing under various conditions, such as thermal, stress, or electric fields. Evolvements of correlated internal structures for some typical materials were uncovered. The damage features in a graded metallic 3D mesh and a metallic glass under mechanical loading were revealed and investigated. Micro-voids with thermal treatment and void healing phenomenon with electropulsing were clearly demonstrated and quantitatively analyzed. The substance transfer around an electrode of a Li-S battery and the protective performance of a Fe-based metallic glass coating on stainless steel were monitored through electrochemical processes. It was shown that in situ studies of the laboratory X-ray tomography were suitable for the investigation of structure change under controlled conditions and environments. An extension of the research for in situ laboratory X-ray tomography can be expected with supplementary novel techniques for internal strain, global 3D grain orientation, and a fast tomography strategy.

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Section: Introductionmentioning

confidence: 99%

Correlation of Materials Property and Performance with Internal Structures Evolvement Revealed by Laboratory X-ray Tomography

Zhang

Wang

2018

Materials

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“…Recently, time-resolved computed tomography (three-dimensional, 3D + time, referred as to 4D-CT) has been developed to observe dendrite evolution in Al-Cu alloys (pink X-ray beam, rotation of 0.1 rps) 43,44) and Al-Mg-Si-Y 2 O 3 alloys. 45) 4D-CT was also used to observe the semisolid deformation and transgranular liquation cracking in Al-Cu alloys. 46,47) From an image-processing perspective, time-interlaced model-based iterative reconstruction was developed to improve the temporal resolution.…”

Section: X-ray Imagingmentioning

confidence: 99%

Transformation from Ferrite to Austenite during/after Solidification in Peritectic Steel Systems: an X-ray Imaging Study

et al. 2020

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X-ray transmission imaging with X-ray diffractometry and time-resolved tomography with three-dimensional X-ray diffraction microscopy have been used to observe solidification and transformation in carbon steel and other Fe-based alloys. The imaging techniques showed a massive-like transformation, in which multiple austenite grains were produced in a single δ grain through a solid-solid transformation. The critical velocity from the diffusion-controlled growth of the γ phase to the massive-like transformation was as low as 5 μm/s. X-ray imaging indicated that the δ phase transforms massively to the γ phase in the conventional solidification processes, such as continuous casting. The massive-like transformation and multiple γ grains that were produced in the transformation were related to the subsequent microstructure evolution and casting defect formation. Solidification model including the massive-like transformation is expected to improve our understanding the solidification and the related phenomena in the peritectic steel systems.

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“…Direct observations of the evolving microstructures during solidification enable scientists and engineers to understand the influence of particles on the microstructure, and thus enabling the examination of the interacting mechanisms between the particles and the evolving microstructure. This is now readily available with the development of the 3 rd generation synchrotron X-ray characterization techniques, especially the 3D (or even 4D, 3D plus time) tomography technique where the complex 3D morphology of the microstructures can be revealed in real time [12][13][14][15]. For example, the time evolved synchrotron tomography was used to study the effect of nanoparticles on solidification microstructures in Al alloys to reveal dendrite growth mechanisms in fcc crystal structures in the presence of NP's [16].…”

Section: Introductionmentioning

confidence: 99%

In Situ Tomographic Observation of Dendritic Growth in Mg/Al Matrix Composites

et al. 2019

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Understanding the interaction of nano/micro-particles with evolving microstructures during solidification is critical for developing new materials with improved mechanical properties through either particulate reinforcement and/or via microstructural refinement. In this study, we investigate the influence of nanoparticles on the evolving dendrites in both Mg and Al based metal matrix composites via in situ synchrotron tomography. Ultrasonic treatment was applied during the raw material preparation to break the particle agglomeration. The solidification of primary dendrites was characterized and quantified. The results reveal the underlying physical mechanisms that enable nanoparticles to modify the grain size in both alloy systems. These insights into dendrite evolution help both to inform and validate numerical models of the solidification microstructures of metal matrix composites.

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Remelting and solidification of a 6082 Al alloy containing submicron yttria particles: 4D experimental study by in situ X-ray microtomography

Cited by 22 publications

References 29 publications

Correlation of Materials Property and Performance with Internal Structures Evolvement Revealed by Laboratory X-ray Tomography

Correlation of Materials Property and Performance with Internal Structures Evolvement Revealed by Laboratory X-ray Tomography

Transformation from Ferrite to Austenite during/after Solidification in Peritectic Steel Systems: an X-ray Imaging Study

In Situ Tomographic Observation of Dendritic Growth in Mg/Al Matrix Composites

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