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
ENG
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
URI
http://hdl.handle.net/10203/73392
Appears in Collection
MS-Journal Papers(저널논문)
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