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For details see P.G. Caceres-Valencia; "Effect of Elemental Redistribution on the Failure of Centrifugally Cast HK 40 Alloy", ASME-Journal - Failure Analysis and Prevention, v.6, issue 2, pp.67-72, (2006).
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Fractography
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Step fracture in HK40 Alloy
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Microvoids along the interdendritic region.
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Microstructure of HK40 Alloy. Note primary (elongated) and secondary (small equiaxial) carbides.
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Step fracture
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Primary carbides
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Step fracture along primary carbides
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Concentration Mapping for
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Concentration Mapping for Cr for an HK40 alloy.
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