New metastable phases in nickel-rich Ni-Al-Ti alloys
Conference
·
OSTI ID:72424
- Univ. of Cambridge (United Kingdom). Dept. of Materials Science and Metallurgy
Phase transformations in the {beta} phase of a number of nickel-rich Ni-Al-Ti alloys between 600 and 700 C have been studied by transmission electron microscopy. When titanium content is increased to about 10 at.%, no martensite forms upon quenching to room temperature, and new metastable phases with either 4H or 6R long-period stacking variations were found upon short-term annealing. This contrasts with the behavior of Ni-Al or Ni-Al-Ti alloys with low titanium contents, in which the appearance of 3R and 7R martensites is followed by formation of Ni{sub 5}Al{sub 3} upon annealing in the same temperature range.
- OSTI ID:
- 72424
- Report Number(s):
- CONF-9310224--; ISBN 0-87339-249-3
- Country of Publication:
- United States
- Language:
- English
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