穿孔挤压纯铌管靶退火过程研究  

Study on Annealing Process of Perforated Extruded Pure Niobium Tube Target

作　　者：余涛[1] 吴孟海 张浩 朱芳 汪紫怡 李诗宇 杨圳 YU Tao;WU Meng-hai;ZHANG Hao;ZHU Fang;WANG Zi-yi;LI Shi-yu;YANG Zhen(School of Physics and Materials,Nanchang University,Nanchang 330038,China;Jiujiang Tanbre Co.,Ltd.,Jiujiang 332005,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,China)

机构地区：[1]南昌大学物理与材料学院,江西南昌330038 [2]九江有色金属冶炼有限公司,江西九江332005 [3]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《稀有金属与硬质合金》2024年第6期56-62,共7页Rare Metals and Cemented Carbides

摘　　要：对直径300 mm铌铸锭进行穿孔挤压制得大尺寸铌管靶,随后将其进行不同温度的退火处理。利用差式扫描量热法(DSC)确定退火过程铌管的回复和再结晶温度,并利用背散射电子衍射(EBSD)技术分析挤压及退火后铌管的织构演化过程。结果表明:不同退火升温速率对铌管的再结晶开始温度影响小;挤压后铌管变形组织以<100>和<111>丝织构为主,退火后得到<110>为主的再结晶织构。本研究有助于改进挤压铌管组织均匀化的退火工艺。A large-size niobium tube target was made by perforating and extruding of niobium ingot with a diameter of 300 mm,and then annealed at different temperatures.The recovery and recrystallization temperature of the niobium tube during annealing were determined by differential scanning calorimetry(DSC),and the texture evolution of niobium tube after extrusion and annealing was analyzed by electron backscattered diffraction(EBSD)technique.The results show that different annealing heating rates have little effect on the initial recrystallization temperature of niobium tube.The deformed microstructure of the extruded niobium tube is mainly<100>and<111>silk texture,and<110>predominant recrystallization texture is obtained after annealing.This study is helpful to improve the annealing process for the microstructure homogenization of extruded niobium tubes.

关 键 词：纯铌管靶 挤压 退火 再结晶 织构 变形储存能 

分 类 号：TG146.416[一般工业技术—材料科学与工程]