Slip transition and dislocation structures in off-stoichiometric NiAl single crystals
Book
·
OSTI ID:571842
- Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
- Clemson Univ., SC (United States). Dept. of Physics and Astronomy
- NASA Lewis Research Center, Cleveland, OH (United States)
Compression tests have been performed on hard-oriented Ni-44Al single crystals for several temperatures and strain levels. There is a slip transition from a<111> type slip to non-a<111> type slip which corresponds with the observation of yield points. Transmission electron microscopy studies provide evidence for decomposition of a<111> dislocations into a <101> and a<010> dislocations near the knee of the yield strength curve. The mechanism of this slip transition and the nature of the dislocation processes both below and above the knee are described.
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- FG02-96ER45550
- OSTI ID:
- 571842
- Report Number(s):
- CONF-961202--
- Country of Publication:
- United States
- Language:
- English
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