1200 K compressive properties of N-containing NiAl
- NASA Lewis Research Center, Cleveland, OH (United States)
As part of a series of experiments to understand the role of N on the strength of NiAl, a heat of NiAl was enriched with N by melting and atomization to powder in a nitrogen atmosphere. Following consolidation of the powder by hot extrusion, 1,200 K compressive properties were measured in air. Within the range of strain rates examined, 10{sup {minus}3} to 10{sup {minus}9} s{sup {minus}1}, the strength of the N-enriched NiAl was greater than that of a simple 15 {mu}m grain size polycrystalline, binary NiAl alloy. For the most part the overall improvement in strength is ascribed to the fine grain size of the N-doped NiAl rather than the alloy chemistry; however, the alloy displayed a complex behavior exhibiting both weakening effects as well as strengthening ones.
- OSTI ID:
- 78333
- Report Number(s):
- CONF-941144--; ISBN 1-55899-265-0
- Country of Publication:
- United States
- Language:
- English
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