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
余涛 1吴孟海 1张浩 2朱芳 2汪紫怡 3李诗宇 1杨圳1
作者信息
- 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
- 折叠
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.
Abstract
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 tem-perature 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 tex-ture is obtained after annealing.This study is helpful to improve the annealing process for the microstruc-ture 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Key words
pure niobium tube target/extrusion/annealing/recrystallization/texture/deformation storage energy引用本文复制引用
出版年
2024
NETL
NSTL
万方数据