Relationship of microstructure and mechanical properties for V-Cr-Ti alloys
- Argonne National Lab., IL (United States)
- Chicago Univ., IL (United States)
Relation of composition, number density, and diameter of precipitates in microstructures of unalloyed V and V-Cr-Ti alloys to the yield strength, hardness, creep stress, and ductile-brittle transition temperature (DBTT) for these materials was determined from analytical electron microscopy analyses of precipitates in these materials and from mechanical properties data. Unalloyed V and V-Cr-Ti alloys with {le}3 wt. % Ti contained VC and TI(CNO) precipitates that were coherent with the matrix. The most common precipitates in the alloys were Ti(C{sub 1-x-y}N{sub x}O{sub y}) that were non-coherent with the matrix. The number density of non-coherent precipitates was maximum in V-3Ti and V-5Cr-3Ti alloys, and the average diameter of non-coherent precipitates was minimum in V-(1--3)Ti and V-5Cr-3Ti alloys. The increase of yield strength and hardness of V on alloying with Ti and Cr was shown to be primarily due to coherent precipitate, solute-atom misfit, and shear-modulus difference effects. The creep stress for rupture in 1000 hours was related to the number density of precipitates, whereas the DBTT was related to the volume fraction of precipitates.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10188914
- Report Number(s):
- ANL/ET/CP-80862; CONF-930928-9; ON: DE94001431; TRN: 93:024102
- Resource Relation:
- Conference: 6. international conference on fusion reactor materials,Stresa (Italy),27 Sep - 1 Oct 1993; Other Information: PBD: Aug 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
VANADIUM
PHYSICAL PROPERTIES
VANADIUM ALLOYS
TITANIUM ALLOYS
CHROMIUM ALLOYS
CORRELATIONS
MICROSTRUCTURE
DUCTILE-BRITTLE TRANSITIONS
TRANSITION TEMPERATURE
CHEMICAL COMPOSITION
YIELD STRENGTH
HARDNESS
RUPTURES
PRECIPITATION
CREEP
360103
360102
700480
MECHANICAL PROPERTIES
STRUCTURE AND PHASE STUDIES
COMPONENT DEVELOPMENT
MATERIALS STUDIES