1981
DOI: 10.1557/proc-8-173
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Cooling Rates and Fine Microstructures of Rsr and Argon Atomized Superalloy Powders

Abstract: Superalloy powders of an IN 792 plus Hf type alloy produced from Rapid Solidification (RSR) and Argon Atomized process (AA) techniques are analyzed and compared according to particle size. Characterization of powders include surface and interior morphology, particle size and void distribution, cooling microstructures, microcrystallinity, microsegretation and especially dendrite arm spacing and cooling rates. It is found that, for the alloy studied, RSR cooling rates are a factor of only two to four greater tha… Show more

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Cited by 5 publications
(2 citation statements)
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“…The mechanical properties of the powder particles most likely varies with particle size, because the grain size and crystalline morphology of the powder particles vary with particle size (14).…”
Section: Densification Mechanisms and Densification Ratesmentioning
confidence: 99%
“…The mechanical properties of the powder particles most likely varies with particle size, because the grain size and crystalline morphology of the powder particles vary with particle size (14).…”
Section: Densification Mechanisms and Densification Ratesmentioning
confidence: 99%
“…Fortunately, powder metallurgy (PM) breaks the dilemma. When gas atomization, the rapid solidification process (10 4 -10 5 º C/s) achieves highly chemical homogeneity [9][10][11] . The application of hot isostatic pressing (HIP), extrusion and isothermal forging (ITF) lay a good foundation for components manufacturing [12][13][14] .…”
Section: Introductionmentioning
confidence: 99%