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- Unclassified, Unlimited, Publicly available.
- Additions of small amounts of Hf and Si to NiAl single crystals significantly improve their high-temperature strength and creep properties. However, if large Hf-rich dendritic particles formed during casting of the alloyed single crystals are not dissolved completely during homogenization heat treatment, a large variation in creep rupture life can occur. This behavior, observed in five samples of a Hf containing NiAl single crystal alloy tested at 1144 K under an initial stress of 241.4 MPa, is described in detail highlighting the role of interdendritic Hf-rich particles in limiting creep rupture life.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19970027545.
Accession ID: 97N26475.
Micromechanics of Advanced Materials; 1995; United States.
Proceedings of the Micromechanics of Advanced Materials Symposium; 255-263.
- No Copyright.
View MARC record | catkey: 15422270