摘要
通过显微硬度测试、金相显微镜和透射电镜观察,研究了Ta-2.5wt%W合金不同状态下的性能与组织的变化。结果表明:Ta-2.5wt%W合金冷轧态硬度可达240左右,同一厚度Ta-2.5wt%W合金在退火过程中,其硬度均随退火温度的升高而不断降低。厚度为0.068 mm的Ta-2.5wt%W合金在1 200℃退火时开始发生再结晶,而在1360℃退火时,发生完全再结晶且晶粒粗大。几种不同厚度Ta-2.5wt%W合金在退火过程中,随着试样厚度的不断变薄,其开始再结晶温度依次降低。不同厚度Ta-2.5wt%W合金经同一温度退火后,其回复再结晶程度也随试样厚度的变薄而有所加剧。
The mechanical properties and microstructures of Ta-2.5wt% W alloy under different conditions are studied by micro-hardness test, TEM and metallographic observation. The results show that the hardness of cold-rolled Ta-2.5wt% W alloy reaches to 240. During the annealing, the hardness of Ta-2.5wt% W alloy with same thickness gradually falls with the increase of annealing temperature. The recrystallization of Ta-2.5wt% W alloy with 0. 068 mm thickness occurs at 1 200 ℃, while its complete recrystallization occurs at 1 360 ℃, with coarse grains. The initial recrystallization temperature of Ta-2.5wt% W alloys with different thickness falls with the samples＇ becoming thinner in the process of annea- ling. When Ta-2.5wt% W alloys with different thickness are annealed at the same temperature, the recovery degree of recrystallization increases with the samples＇ becoming thinner as well.
出处
《矿冶工程》
CAS
CSCD
北大核心
2009年第1期104-107,共4页
Mining and Metallurgical Engineering
基金
国家高新技术发展"863"计划资助项目(2006AA03Z517)
湖南省自然科学基金(05JJ30095)
关键词
Ta—W合金
退火
回复
再结晶
Ta-W alloy
annealing
recovery
recrystallization
