February 12, 2018 at 1:38 pm #2561
In this analysis, three materials were successfully serial sectioned over large, representative volumes, for porosity analysis. A high level of linearity was achieved for material removal rates. Single 2D slices were analyzed for porosity, and were found to have high variability in porosity estimate results depending on which slice was analyzed. These results were compared to direct experimental measurements using Robo-Met.3D, which provided a more comprehensive estimate.
The HIP-ed sample evaluated correlated with the expectation of lower porosity, and revealed lack of fusion defects. Visualization of the 3D microstructural and topological features using serial sectioning methods such as Robo-Met.3D creates a better understanding of the actual microstructural features. Such direct measurements provide accurate representations, which are imperative to correctly detect pores of critical size for fatigue life prediction, especially for additively manufactured parts.
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