摘要
Ti35钛合金在高浓度沸腾硝酸中具有优异的耐蚀性能,是核乏燃料后处理关键设备的优选材料。分别采用光学显微镜、扫描电镜、X射线衍射仪及透射电镜等仪器对Ti35钛合金管材中的微观组织结构进行了研究,并分析了合金的组分及结构特点。结果表明:经过真空退火后的Ti35钛合金中,组织主要由基体α相和针状次生α相组成,次生α晶内存在孪晶缺陷,晶粒内部的{10 12}孪生为主要的孪晶。
The disposal of nuclear spent fuel is the key step of fuel＇s closed cycle. The selection of material for the pivotal equipments is main difficulty due to fuel＇s post-processing. Ti35 titanium alloy has excellent anti-attacked property in boiling high concentration nitric acid, and it＇s the best choice for post-processing equipment. The microstrueture of corrosion resistant of Ti35 titanium alloy was studied by using Optical Microscope, X-Ray Diffraction, Transmission Electron Microscope, Scanning Electronic Microscope and Electron Backscattered Diffraction. The results indicate that the microstructure of Ti-35 alloy treated by vacuum annealing consists of α-matrix and secondary α-phase mainly, and the twinning defect in the alloy＇s secondary α-phase is found, the main twinning is t {101^-2} type.
出处
《钛工业进展》
CAS
2010年第6期20-23,共4页
Titanium Industry Progress
基金
国家科技计划支撑项目(2007BAE07B03)
关键词
钛合金
Α相
孪晶
titanium alloy
a phase
twinning
