Transmission electron microscopy of rapidly solidified powders of Ni/sub 3/Al
Journal Article
·
· Metallography; (United States)
Rapidly solidified powders (<100 ..mu..m diameter) of stoichiometric Ni/sub 3/Al and Ni/sub 3/Al(B,Ti) were examined using transmission electron microscopy. The powders consisted of martensitic dendrites in a Ll/sub 2/ matrix that contained numerous dislocations. The stoichiometric Ni/sub 3/Al powder also contained martensitic lamellae between the dendrites. The martensite plates were internally twinned and enriched in aluminum, and probably formed by the transformation of ..beta..-NiAl.
- Research Organization:
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755
- OSTI ID:
- 5230804
- Journal Information:
- Metallography; (United States), Journal Name: Metallography; (United States) Vol. 19:1; ISSN MEIJA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103 -- Radiometric & Radiochemical Procedures-- (-1987)
ALLOYS
ALUMINIUM ALLOYS
BORON ALLOYS
CARBON ADDITIONS
CRYSTAL STRUCTURE
CRYSTALS
DENDRITES
ELECTRON MICROSCOPY
INTERMETALLIC COMPOUNDS
IRON ALLOYS
MARTENSITE
MICROSCOPY
NICKEL ALLOYS
NICKEL BASE ALLOYS
PARTICLE SIZE
PHASE TRANSFORMATIONS
POWDERS
SIZE
SOLIDIFICATION
STOICHIOMETRY
TITANIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY
TWINNING
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103 -- Radiometric & Radiochemical Procedures-- (-1987)
ALLOYS
ALUMINIUM ALLOYS
BORON ALLOYS
CARBON ADDITIONS
CRYSTAL STRUCTURE
CRYSTALS
DENDRITES
ELECTRON MICROSCOPY
INTERMETALLIC COMPOUNDS
IRON ALLOYS
MARTENSITE
MICROSCOPY
NICKEL ALLOYS
NICKEL BASE ALLOYS
PARTICLE SIZE
PHASE TRANSFORMATIONS
POWDERS
SIZE
SOLIDIFICATION
STOICHIOMETRY
TITANIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY
TWINNING