Mechanical Behaviour of a Single Crystal Superalloy DD32 - A Comparison with the Alloy SRR99


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Stress rupture and tensile properties of a single crystal superalloy DD32 are investigated comparing with the alloy SRR99. It is shown that the alloy DD32 offers an improved creep temperature capability of more than 60°C at higher stresses. The g¢ precipitates in the stress ruptured samples were rafted to P-N type directional coarsening. The fracture mechanism of the stress ruptured samples was initiated from the micropores.



Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie




J. J. Yu et al., "Mechanical Behaviour of a Single Crystal Superalloy DD32 - A Comparison with the Alloy SRR99", Materials Science Forum, Vols. 475-479, pp. 681-684, 2005

Online since:

January 2005




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