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Fig. 7


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Conventional TEM micrographs of the 316L AM materials: (a) as-built, (b) heat-treated and (c) HIP, showing GB and the sub-grain structure in the as-built and HT samples. The three specimen were prepared in a plane along the build direction. The HIP sample presents precipitates at GB and re-crystallised structure with residual dislocations.

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