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A comparative tomography study on the sintering dynamics of Ti6Al4V and Ti22Al25Nb alloys
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DOI：10.1080/21663831.2026.2689703.png)
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Abstract
En 中文
In situ three-dimensional monitoring of sintering processes remains challenging due to limitations in spatial resolution, thermo-mechanical stability, and imaging compatibility. To overcome these hurdles, we developed a custom spark plasma sintering (SPS) apparatus integrated with laboratory X-ray microscope to comparatively investigate the sintering dynamics of Ti6Al4V and Ti22Al25Nb alloys. Quantitative analysis reveals that Ti6Al4V densifies more rapidly; however, the densification rates of both alloys converge after the initial sintering stage. This suggests that the dominant densification mechanisms become similar for both alloys once a critical neck size is established, thereby providing guidance for optimizing processing parameters in advanced powder consolidation.
Keywords:
Laboratory X-ray microscope
three-dimensional tomography
titanium alloys
sintering dynamics
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