ALLOY DESIGN AND COARSENING PHENOMENON OF L1(2) PRECIPITATES IN HIGH-TEMPERATURE AL-2 AT PCT (TI,V,ZR) SYSTEMS
Aging works of two melt-spun Al-2 at pet (Ti,V,Zr) alloys showed that metastable Ll(2)Al(3)(Ti,V,Zr) precipitates were dominant and did not transform to stable DO23 ones: the average radius was 3 to 4 nm and the interparticle spacing was 10 to 30 nm at 698 K up to 400 hours. Coarsening kinetics was found to be very sluggish and was coincident with the low lattice mismatch. Due to the low coarsening rate and the high thermal. stability of the precipitated phase, rapidly solidified Al-Ti-V-Zr systems show promise as base of high-strength Al alloys for high-temperature applications.
- Publisher
- MINERALS METALS MATERIALS SOC
- Issue Date
- 1995-07
- Language
- English
- Article Type
- Article
- Keywords
V-ZR ALLOYS; TI; BEHAVIOR; ELEMENTS; PHASE; DO22; L12
- Citation
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.26, no.7, pp.1633 - 1639
- ISSN
- 1073-5623
- Appears in Collection
- MS-Journal Papers(저널논문)
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