Strengthening of NiAl matrix composites. Annual report, Oct 90-Sep 91
Technical Report
·
OSTI ID:5906239
Deformation of titanium boride/nickel aluminum composites at high temperatures exhibit low temperature deformation characteristics, and grain size refinement in these composites could account for the strengthening of the composites. Interfaces of TiB2-NiAl and alpha--aluminum oxides--NiAR in TiB2/NiAl composites have been investigated by analytical electron microscopy. Although no consistent crystallographic orientation relationships have been found between NiAl and TiB2 or Al2O3, semicoherent interfaces between alpha-Al2O3 and NiAl have been observed in areas where the low indexed crystallographic planes of alpha-Al2O3 aligned with that of NiAl. No semicoherent interfaces between NiAl and TiB2 have been observed. Silicon segregation was consistently detected by at the TiB2/NiAl interface region. Segregation has not been detected in the alpha-Al2O3-NiAl interface region. The segregation layer observed at the TiB2-NiAl interface is too thin to absorb any of the thermal residual stress.
- Research Organization:
- Maryland Univ., College Park, MD (United States). Metallurgical Materials Lab.
- OSTI ID:
- 5906239
- Report Number(s):
- AD-A-242236/8/XAB; MML--1991-1; CNN: N00014-91-J-1353
- Country of Publication:
- United States
- Language:
- English
Similar Records
Abrasive wear behavior of NiAl and NiAl-TiB2 composites
Strengthening of nial matrix composites. Final report, October 1990-September 1993
Deformation and fracture of a directionally solidified NiAl-28Cr-6Mo eutectic alloy
Conference
·
Wed Mar 31 23:00:00 EST 1999
·
OSTI ID:896194
Strengthening of nial matrix composites. Final report, October 1990-September 1993
Technical Report
·
Fri Oct 01 00:00:00 EDT 1993
·
OSTI ID:5554587
Deformation and fracture of a directionally solidified NiAl-28Cr-6Mo eutectic alloy
Technical Report
·
Mon May 01 00:00:00 EDT 1995
·
OSTI ID:200610
Related Subjects
36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
DEFORMATION
ELECTRON MICROSCOPY
ELEMENTS
GRAIN REFINEMENT
GRAIN SIZE
INTERFACES
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
NICKEL ALLOYS
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
SEMIMETALS
SILICON
SILICON CARBIDES
SILICON COMPOUNDS
SIZE
STRESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
THERMAL STRESSES
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
DEFORMATION
ELECTRON MICROSCOPY
ELEMENTS
GRAIN REFINEMENT
GRAIN SIZE
INTERFACES
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
NICKEL ALLOYS
ORIENTATION
OXIDES
OXYGEN COMPOUNDS
SEMIMETALS
SILICON
SILICON CARBIDES
SILICON COMPOUNDS
SIZE
STRESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
THERMAL STRESSES
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS