The recovery and recrystallization of cold rolled V-W-Ti alloys

Several V-W-Ti alloys with about 50% reduction in thickness by cold rolling were isochronally annealed at temperatures from 100 to 1100 degreesC. Hardness was measured after the annealing. By comparison with V4Cr4Ti and V4Ti alloys, the V6WTi alloy was found to begin recovery at a temperature about 100 degreesC higher, while the full recrystallization temperature was around 900 degreesC for all of the alloys. Hardness decreased successively above 500 degreesC in V8W, as is the case in pure V. Impurity induced hardening was observed around 300 degreesC only in the alloys without Ti. Precipitation and the interaction between interstitial impurities and dislocations were supposed to be the main contributors to the different recovery and recrystallization behaviors of the alloys. (C) 2003 Elsevier B.V. All rights reserved.