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研究了几种冷变形钒合金的回复和再结晶特性。合金材料包括V8W,V7WA1,V6WTi和V4Ti。原始态合金的冷变形量为50％,在经过100-1 100℃范围内的不同温度,1 h等时退火后,测试了合金的硬度和微观组织变化。研究结果表明,虽然几种新型钒合金具有近似相等的硬度,且在1 h内发生完全再结晶的温度基本相同,约为900℃,但回复和再结晶特性仍存在明显差异。V6WTi合金的起始再结晶温度约为700℃,比V4Ti合金高出约100℃,而比其他两种合金高出约200℃。V8W合金在约300℃退火时出现硬度峰值,其回复和再结晶行为几乎与金属V完全一致。该硬度峰被认为是合金中的O,N和C杂质与位错交互作用的结果,而合金含Ti能明显抑制该交互作用过程。在退火过程中,含Ti合金中出现了许多析出物,该析出物和合金元素W联合作用,使V6WTi合金具有最高的起始再结晶温度。
The recovery and recrystallization properties of several cold-deformed vanadium alloys were investigated. Alloy materials include V8W, V7WA1, V6WTi and V4Ti. The cold deformation of the original alloy was 50%. The hardness and microstructure of the alloy were tested after annealing at different temperatures in the range of 100-1 100 ℃ for 1 h. The results show that although some new vanadium alloys have similar hardness, and the complete recrystallization occurs within 1 h at the same temperature of about 900 ℃, the recovery and recrystallization characteristics are still significantly different. The V6WTi alloy has an initial recrystallization temperature of about 700 ° C, about 100 ° C higher than the V4Ti alloy and about 200 ° C higher than the other two alloys. V8W alloy annealed at about 300 ℃ hardness peak, the recovery and recrystallization behavior almost exactly the same with the metal V. The hardness peak is considered as a result of the interaction of dislocations of O, N and C in the alloy, while the Ti-containing alloy can significantly inhibit the interaction process. During the annealing process, many precipitates appeared in the Ti-containing alloy. The precipitates and the alloying element W combined to make the V6WTi alloy have the highest initial recrystallization temperature.