Mechanical Engineers' Handbook 2015
DOI: 10.1002/9781118985960.meh108
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A Guide to Engineering Selection of Superalloys for Design

Abstract: This chapter intends to create a sufficient understanding of superalloys so that selection of them for specific designs will be appropriate. The nature of superalloys is that they resist the creep rupture process better than other materials, have very good higher temperature short‐time strength (yield, ultimate) and fatigue properties (including fatigue crack propagation resistance), and combine these mechanical properties with good to exceptional oxidation resistance. The density, melting point, and physical … Show more

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Cited by 22 publications
(32 citation statements)
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“…The only aspect noticeable was the thickening of the grain boundary by formation and segregation of Cr23C6 as discontinuous particles. As long as the Cr 23 C 6 carbide doesn't form as cellular structure, the critical location at grain boundary becomes beneficial increasing the rupture strength by impeding grain boundary sliding [17]. The ideal shape would be a zipper like shape [18].…”
Section: Discussionmentioning
confidence: 99%
“…The only aspect noticeable was the thickening of the grain boundary by formation and segregation of Cr23C6 as discontinuous particles. As long as the Cr 23 C 6 carbide doesn't form as cellular structure, the critical location at grain boundary becomes beneficial increasing the rupture strength by impeding grain boundary sliding [17]. The ideal shape would be a zipper like shape [18].…”
Section: Discussionmentioning
confidence: 99%
“…Both IN718 powders (gas-atomized and PDR) used for HIP bonding typically comprised spherical particles, both with ner and broad particle size distributions less than 60 μm (Fig. 2), which would provide high packing density and reduce the percentage of voids 19,20) . Figure 3 shows the microstructure of the HIPed specimens using gas-atomized and PDR powders.…”
Section: Properties Of In718 Powdersmentioning
confidence: 99%
“…These hightemperature alloys have increased strength properties, especially heat and creep resistance at high operating temperatures. The conditions, in which the turbine blades operate, require specific strength properties, that possess CMSX-4 superalloy [1,2]. Crystallization process of single-crystalline blades is difficult due to their complexity shape, and for this reason, microstructure disorders can be formed during the production.…”
Section: Introductionmentioning
confidence: 99%