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  • 1
    facet.materialart.
    Unknown
    The formation of aligned spheres in miscibility gap systems (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The development of regularly sized and spaced rods or spheres in a monotectic system is presently considered in terms of interface breakdown and capillary instability mechanisms between two liquid phases. The most important relationship, which governs the rod-to-aligned spheres transition, is the temperature gradient-to-growth rate ratio that determines the depth of the intercellular nodes. Rods will develop when these nodes are shallow by comparison to rod circumference, and spheres will develop when they are deep.
    Keywords: METALLIC MATERIALS
    Type: Acta Metallurgica (ISSN 0001-6160); 31; Aug. 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    A technique to correct for sample thickness variations for use with IDAPS X-ray radiograph analysis (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The Image Data Processing System (IDAPS) at the Marshall Space Flight Center is used to analyze radiographs of metal samples to qualitatively and quantitatively map compositional variations across the samples. When the X-ray radiographs are of samples having thickness variations, corrections must be made to accomplish compositional analysis. A correction technique is described for cylindrical samples and is applied to radiographs of SPAR Experiment 74-18. Uncorrected and corrected images are shown.
    Keywords: METALLIC MATERIALS
    Type: NASA-TM-78140
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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