Orientation contrast of secondary electron images from electropolished metals

Chen, D.; Chang, C.P.; Loretto, M. H.

doi:10.1016/j.ultramic.2015.05.005

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Subsequently, after grinding and polishing with colloidal silica solution of 0.04

μ

m, the precipitate distribution and microstructural morphology were characterized and analyzed by field‐emission SEM of Carl Zeiss Supra 55 with 5 kV at a working distance of 5 mm with BEI. In addition, based on the SEM parameter setting (Chen et al ., ), we obtained the BEI at the voltage of 5 kV, which shows the strain field pattern around the grain boundary and precipitates. The average particle size of Laves phase was calculated by the ImageJ software using the limned and measured function.…”

Section: Experimental Processmentioning

confidence: 97%

Effect of prior deformation on microstructural development and Laves phase precipitation in high‐chromium stainless steel

Hsiao

Chen

Kuo

et al. 2017

Journal of Microscopy

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This study investigated the influence of deformation on precipitation behaviour and microstructure change during annealing. Here, the prior deformation of high-chromium stainless steel was tensile deformation of 3%, 6% and 10%, and the specimens were then annealed at 700˚C for 10 h. The specimens were subsequently analyzed using backscattered electron image and electron backscattering diffraction measurements with SEM. Compared with the deformation microstructure, the grains revealed no preferred orientation. The precipitates of TiN and NbC were formed homogenously in the grain interior and at grain boundaries after annealing. Fine Laves phase precipitates were observed in grains and along subgrain boundaries as the deformation increased. Furthermore, the volume fraction of Laves phase increased, but the average particle diameter of precipitate was reduced as the deformation increased.

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“…Subsequently, after grinding and polishing with colloidal silica solution of 0.04

μ

Section: Experimental Processmentioning

confidence: 97%

Effect of prior deformation on microstructural development and Laves phase precipitation in high‐chromium stainless steel

Hsiao

Chen

Kuo

et al. 2017

Journal of Microscopy

Self Cite

View full text Add to dashboard Cite

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Quantitative Imaging of Magnesium Biodegradation by 3D X‐Ray Ptychography and Electron Microscopy

Akhmetshina,

Schäublin,

Rich

et al. 2024

Adv Funct Materials

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Magnesium‐based alloys are excellent materials for temporary medical implants, but understanding and controlling their corrosion performance is crucial. Most nanoscale corrosion studies focus on the surface, providing only 2D information. In contrast, macro‐ and microscale X‐ray tomography offers representative volume information, which is, however, comparatively low in resolution and rather qualitative. Here a new mesoscale approach overcomes these drawbacks and bridges the scale gap by combining 3D measurements using ptychographic X‐ray computed tomography (PXCT) with electron microscopy. This combination allows to observe the corrosion progress non‐destructively in 3D and provides high‐resolution chemical information on the corrosion products. A medical Mg–Zn–Ca alloy is used and compared the same sample in the pristine and corroded states. With PXCT an isotropic resolution of 85 and 123 nm is achieved for the pristine and corroded states respectively, which enables to distinguish nanoscale Mg2Ca precipitates from the matrix. The corroded state in best approximation to the in situ conditions is imaged and reveals the complexity of corrosion products. The results illustrate that the corrosion‐layer is dense and defect‐free, and the corrosion of the material is grain‐orientation sensitive. The developed workflow can advance research on bioactive materials and corrosion‐sensitive functional materials.

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Orientation contrast of secondary electron images from electropolished metals

Cited by 2 publications

References 7 publications

Effect of prior deformation on microstructural development and Laves phase precipitation in high‐chromium stainless steel

Effect of prior deformation on microstructural development and Laves phase precipitation in high‐chromium stainless steel

Quantitative Imaging of Magnesium Biodegradation by 3D X‐Ray Ptychography and Electron Microscopy

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