Materials 2013, 6(5), 1789-1802; doi:10.3390/ma6051789
Article

Prediction of Microporosity in Complex Thin-Wall Castings with the Dimensionless Niyama Criterion

The State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
* Authors to whom correspondence should be addressed.
Received: 5 March 2013; in revised form: 7 April 2013 / Accepted: 10 April 2013 / Published: 7 May 2013
(This article belongs to the Special Issue Superalloys)
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Abstract: The dimensionless Niyama criterion was used to predict the formation of microporosity in nickel-based superalloy casting, which extended the model application from a simple plate casting to complex thin-wall superalloy casting. The physical characteristics of the superalloy were calculated by JMatPro software. The relation between the volume percentage of microporosity and the dimensionless Niyama values were constructed. Quantitative metallographic measurements of the microporosity of the practical thin-wall casting were carried out. The prediction agreed well with the experiment in general, except for some thick-wall sites in the casting.
Keywords: nickel-based superalloy; complex thin-wall casting; microporosity; prediction

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MDPI and ACS Style

Kang, M.; Gao, H.; Wang, J.; Ling, L.; Sun, B. Prediction of Microporosity in Complex Thin-Wall Castings with the Dimensionless Niyama Criterion. Materials 2013, 6, 1789-1802.

AMA Style

Kang M, Gao H, Wang J, Ling L, Sun B. Prediction of Microporosity in Complex Thin-Wall Castings with the Dimensionless Niyama Criterion. Materials. 2013; 6(5):1789-1802.

Chicago/Turabian Style

Kang, Maodong; Gao, Haiyan; Wang, Jun; Ling, Lishibao; Sun, Baode. 2013. "Prediction of Microporosity in Complex Thin-Wall Castings with the Dimensionless Niyama Criterion." Materials 6, no. 5: 1789-1802.

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