高纯钽板的轧制与退火织构  

Rolling and Annealing Texture of High-Purity Tantalum Plate

作　　者：谢盼平 袁思成 胡立坤 蒋任翔 张林 彭智 郑峰[1] XIE Pan⁃ping;YUAN Si⁃cheng;HU Li⁃kun;JIANG Ren⁃xiang;ZHANG Lin;PENG Zhi;ZHENG Feng(School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,China;Changsha Southern Tantalum Niobium Co Ltd,Changsha 410083,Hunan,China)

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]长沙南方钽铌有限责任公司,湖南长沙410083

出　　处：《矿冶工程》2019年第6期129-132,137,共5页Mining and Metallurgical Engineering

摘　　要：选用经过电子束熔炼后的高纯钽锭进行开坯轧制,研究该钽板织构随压下量与退火温度的变化,研究结果表明:在850℃退火的板材,延续轧制板材的织构特征,存在由{100}<110>组分和γ织构及其强弱变化所构成的织构梯度。在1 000℃退火的板材,织构组分({100}<110>组分和γ织构)没有明显变化,仅仅强度提高。在1 150℃退火的板材,表面{100}<110>织构衍生出新的{112}<110>组分。在1 300℃退火的板材,γ纤维织构出现{111}<112>取向的择优生长。A high-purity tantalum ingot after electron beam melting was used for breakdown rolling for studying the texture of the tantalum plate as a function of reduction and annealing temperature. The results show that the sheet material annealed at 850 ℃ will still have the texture characteristics of the rolled sheet, with a texture gradient composed of {100} <110> components and γ texture and their strength variations. The sheet annealed at 1 000 ℃ hasn′t any obvious change in the texture components({100} <110> components and γ texture), just has improved its strength. For the sheet annealed at 1 150 ℃, a new {112} <110> component has been derived on the surface {100} <110> texture. And after the sheet is annealed at 1 300 ℃, the γ-fiber texture shows {111}<112>-oriented preferential growth.

关 键 词：高纯钽 轧制 织构梯度 退火织构 择优生长 

分 类 号：TB302[一般工业技术—材料科学与工程]