Coarsening kinetics of cubic Al sub 3 (V,Zr) precipitates in Al-V-Zr alloys
Conference
·
· TMS (The Metallurgical Society) Paper Selection; (USA)
OSTI ID:5450769
- Northwestern Univ., Evanston, IL (USA)
The effect of lattice parameter mismatch {Delta} on the coarsening kinetics at 425 C of cubic (Ll{sub 2})Al{sub 3}Zr and Al{sub 3}(V{sub 0.875}Zr{sub 0.125}) has been studied. Good lattice matching between an intermetallic compound and matrix is necessary to promote a low interfacial energy and thus resistance to particle coarsening at elevated temperatures. For the Al{sub 3}Zr phase, electron diffraction analysis has determined a {Delta} of 1.0% as compared to -0.3% determined for the Al{sub 3}(V{sub 0.875}Zr{sub 0.125}), Ll{sub 2}-type phase. At low volume fractions, an interfacial energy, {sigma}, of 4 {times} 10{sup {minus}2} J/m{sup 2} was calculated for the Al{sub 3}Zr phase from coarsening kinetics. The value for Al{sub 3}(V{sub 0.875}Zr{sub 0.125}) is even lower. Both {Delta} and {sigma} are suggestive of a semicoherent interface. Quantitative analysis of the kinetics is presented.
- OSTI ID:
- 5450769
- Report Number(s):
- CONF-840909--
- Conference Information:
- Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Thesis/Dissertation
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:5926003
Coarsening behavior of L1/sub 2/ structured Al/sub 3/(Zr/sub x/ V/sub 1-x/) precipitates in rapidly solidified Al-Zr-V alloy
Journal Article
·
Wed Dec 31 23:00:00 EST 1986
· Scr. Metall.; (United States)
·
OSTI ID:5556437
Alloy design and coarsening phenomenon of L1{sub 2} precipitates in high-temperature Al-2 at pct (Ti, V, Zr) systems
Journal Article
·
Sat Jul 01 00:00:00 EDT 1995
· Metallurgical Transactions, A
·
OSTI ID:87690
Related Subjects
36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
ALUMINIUM COMPOUNDS
COHERENT SCATTERING
COMPATIBILITY
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON DIFFRACTION
ENERGY
FREE ENERGY
INTERFACES
KINETICS
MICROSTRUCTURE
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SURFACE ENERGY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
VANADIUM ALLOYS
ZIRCONIUM ALLOYS
360102* -- Metals & Alloys-- Structure & Phase Studies
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
ALUMINIUM COMPOUNDS
COHERENT SCATTERING
COMPATIBILITY
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON DIFFRACTION
ENERGY
FREE ENERGY
INTERFACES
KINETICS
MICROSTRUCTURE
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SCATTERING
SURFACE ENERGY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
VANADIUM ALLOYS
ZIRCONIUM ALLOYS