Abstract
Investment casting has emerged as one of the most direct and desirable routes from liquid metal to parts of amazing complexity. Metallurgical developments since the late 1980s have enabled the design and manufacture of components used in static- and dynamic-loaded components. Foundry-process parameters used for such applications have been traditionally optimized with respect to static properties and governing mechanisms and are fairly well understood. The goal of this study is to evaluate how the combinations of process parameters that result either in maximum yield strength or maximum ductility also affect the fatigue life of components. The influence of some casting and heat-treatment parameters affecting microstructure (e.g., dendritic arm spacing, silicon-eutectic structure, and precipitation of age-hardening phases) is assessed on both the static tensile properties and fatigue life.
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S. Kennerknecht earned his MBA at McGill University in 1986. He is currently vice president of technology at Cercast Group and general manager of Cercast.
X. Dumant earned his M. Eng. in metallurgy at Ecole Centrale de Paris, France, in 1984. He is currently technical director at Ciral, France.
R. Tombari earned his B. Eng. in metallurgy at McGill University in 1983. He is currently chief process engineer at Cercast, Canada.
P. Van Biljon earned his M. Eng. in metallurgy at University of Witwatersrand, Johannesburg, South Africa in 1985. He is currently process engineer at Cercon, Texas.
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Kennerknecht, S., Dumant, X., Tombari, R. et al. The effect of processing parameters on the fatigue properties of D357 investment castings. JOM 49, 22–28 (1997). https://doi.org/10.1007/s11837-997-0007-6
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DOI: https://doi.org/10.1007/s11837-997-0007-6