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