Singer R, Lamm M (2007)
Publication Language: English
Publication Status: Published
Publication Type: Journal article
Publication year: 2007
Publisher: MINERALS METALS MATERIALS SOC
Book Volume: 38A
Pages Range: 1177-1183
Journal Issue: 6
DOI: 10.1007/s11661-007-9188-4
Different solidification conditions are employed to produce sets of single-crystal samples with different primary dendrite arm spacings, i.e., 600 mu m, 400 mu m, and 250 mu m. The material with the smaller dendrite arm spacing is shown to possess considerably increased high-cycle fatigue life. Fatigue cracks are found to originate from shrinkage porosity rather than from carbides, in which the size of the largest pores in the samples scales with the primary dendrite arm spacing. Fatigue life can be rationalized using a fracture mechanics approach based on a Kitagawa-Takahashi plot. The impact of the results with respect to the development of new commercial casting processes that produce higher temperature gradients and cooling rates will be discussed.
APA:
Singer, R., & Lamm, M. (2007). The effect of casting conditions on the high-cycle fatigue properties of the single-crystal nickel-base superalloy PWA 1483. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 38A(6), 1177-1183. https://dx.doi.org/10.1007/s11661-007-9188-4
MLA:
Singer, Robert, and Matthias Lamm. "The effect of casting conditions on the high-cycle fatigue properties of the single-crystal nickel-base superalloy PWA 1483." Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 38A.6 (2007): 1177-1183.
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