Regulation of Microstructure of Weld Zone by Complex Treatment of Annealing and Sandblasting for TA1 Titanium Plate Used for Cathode Roller AITranslate

［1］刘晓燕，强萌，杨西荣，罗雷. 室温ECAP变形纯钛孪生行为研究 ［J］.稀有金属，2023，47（10）：1352.

X Y Liu，M Qiang，X R Yang，L Luo. Twinning behavior of pure titanium processed by ECAP at room temperature［J］.Chinese Journal of Rare Metals，2023，47（10）：1352.

［2］吝媛，杨奇，黄拓，杨晓龙，刘伟，李梦. Ti9148钛合金β-相晶粒长大行为 ［J］.有色金属科学与工程，2022，13（2）：31.

Y Lin，Q Yang，T Huang，X L Yang，W Liu，M Li. Grain growthbehavior in the β- phase of Ti9148 titanium alloy［J］.Nonferrous Metals Science and Engineering，2022，13（2）：31.

［3］Michael B，Elena V P，Chris H J. Effect of orientation and temperature on the mechanical properties of commercially pure titanium［J］.Advanced Materials Research，2007，15（17）：941.

［4］Smirnov B N，Kozhanov V N. Specific features of crystal structure and surface topography of copper electrolytic foils for printed-circuit boards［J］.Russian Journal of Applied Chemistry，2001，74（11）：1821.

［5］鲁鹏，朱悬，彭巨擘，范洪强，伍美珍，郑红星，张家涛，李谦. 基于示差脉冲伏安法检测高纯铟电解液中铟离子［J］.分析试验室，2023，42（2）：177.

P Lu，X Zhu，J B Peng，H Q Fan，M Z Wu，H X Zheng，J T Zhang，Q Li. Detection of indium ion in high-purity indium electrolyte based on differential pulse voltammetry［J］.Chinese Journal of Analysis Laboratory，2023，42（2）：177.

［6］庞继明，李明利，李明强，杨建朝，奚正平. 退火温度对TA1钛管材组织和性能的影响［J］.钛工业进展，2011，28（2）：26.

J M Pang，M L Li，M Q Li，J C Yang，Z P Xi. Effect of annealing temperature on Microstructure and properties of TA1 titanium pipe［J］.Progress of titanium industry，2011，28（2）：26.

［7］任利娜，侯智敏，牛靖，张建勋. 电解铜箔用阴极辊的研究进展及发展趋势［J］.精密成形工程，2020，2（12）：84.

L N Ren，Z M Hou，J Niu，J X Zhang. Researchprogress and development trend of cathode roller for electrolytic copper foil［J］.Precision Forming Engineering，2020，2（12）：84.

［8］王平，袁智斌. 我国电解铜箔未来发展方向的思考［J］.铜业工程，2009，（2）：24.

P Wang，Z B Yuan. Thoughts on the future development direction of electrolytic copper foil in China［J］.Copper engineering，2009，（2）：24.

［9］海敏娜，王永梅，贾栓孝，黄帆，严学波，李芳婷. 热处理对深海耐压壳用Ti542222钛合金厚板组织性能影响研究［J］.稀有金属，2023，47（3）：365.

M N Hai，Y M Wang，S X Jia，F Huang，X B Yan，F T Li. Microstructure and properties of highstrengthand hightoughness titanium alloy plate for deep-sea pressure hull withsolution aging［J］.Chinese Journal of Rare Metals，2023，47（3）：365.

［10］周大地，曾卫东，徐建伟，罗登超，李辉. 冷轧钛管在退火过程中的显微组织与织构演变［J］.稀有金属，2019，43（5）；470.

D D Zhou，W D Zeng，J W Xu，D C Luo，H Li. Microstructure and texture evolution of cold rolled titanium tube during annealing［J］.Chinese Journal of Rare Metals，2019，5（43）：470.

［11］Murty K L，Kishore R，Yan J，Scattergood R O，Helsel A W. Effect of annealing temperature on texture and creep anisotropy in Ti3Al2.5V alloy［J］.Materials Science Forum，2005，16（45）：495.

［12］Bayona-Carrillo N，Bozzolo N，Fundenberger J J，Thomas B，Camelin P，Lenarduzzi E，Wagner F. Effect ofrecrystallization on tensile behavior texture and anisotropy of Ti-3Al-2.5V cold pilgered tubes［J］.Advanced Engineering Materials，2011，13（5）：383.

［13］Wagner F，Bozzolo N，Landuyt O V，Grosdidier T. Evolution of recrystallisation texture and microstructure in low alloyed titanium sheets［J］.Acta Materialia，2002，50：1245.

［14］Bozzolo N，Dewobroto N，Grosdidier T，Wagner F. Texture evolution during grain growthin recrystallized commercially pure titanium［J］.Materials Science and Engineering A，2005，397：346.

［15］Gerspach F，Bozzolo N，Wagner F. About texture stability during primary recrystallization of cold-rolled low alloyed zirconium［J］.Scripta Materialia，2009，60：203.

［16］Hiwarkar V D，Sahoo S K，Samajdar I，Satpathy A，Mani Krishna K V，Dey G K，Srivastav D，Tewari R，Banarjee S. Defining recrystallization in pilgered Zircaloy-4：from preferred nucleation to growthinhibition［J］.Journal of Nuclear Materials，2011，412：287.

［17］Yoshihara S，Yamamoto H，Manabe K. Formability enhancement in magnesium alloy deep drawing by local heating and cooling technique［J］.Journal of Materials Processing Technology，2003，14（3）：612.

［18］吕娜. 工业纯钛TA1焊接接头组织细化及其应用研究［D］.西安：西安理工大学，2009. 68.

N Lu. Study on Microstructure Refinement and Application of TA1 Welded Joint of Industrial Pure Titanium［D］.Xi'an：Xi'an University of Technology，2009. 68.

［19］Qi Y L，Deng J，Hong Q. Electron beam welding，laser beam welding and gas tungsten are welding of titanium sheet［J］.Materials Science and Engineering A，2000，28（10）：177.

［20］Murzinova M A，Salishchev G A，Afonichev D D. Formation of nanocrystalline structure in two-phase titanium alloy by combination of thermohydrogen processing withhot working［J］.International Journal of Hydrogen Energy，2002，27（8）：775.

Basic Information:

DOI：10.13373/j.cnki.cjrm.XY22100007

Chinese Library Classification Number:TG457.19

Citation Information:

Electrolytic copper foil is one of the important materials for manufacturing copper clad laminate （CCL） and printed circuit board （PCB），it is also known as the "neural network" of electronic product signal and power transmission in the electronic industry. In recent years，due to the rapid development of science and technology in the downstream industry，higher requirements are put forward for the upstream electrolytic copper foil. Not only its demand is getting more and more，but also the quality requirements of copper foil are becoming higher and higher. At present，there are two kinds of methods for producing copper foil，one is calendering，and the other is electrolysis. Electrolytic production of copper foil is an efficient technology developed in recent years，whichhas the following two obvious advantages：highefficiency and low cost. The roll cathode withuniform speed and slow rotation is used to continuously produce electrolytic copper foils withcertain width. Withthe rapid development of China's electrolytic copper foil industry，the demand for cathode roller and the key equipment for producing copper foil are also increasing rapidly year by year. Cathode roller is the core and key part of electrolytic copper foil equipment and its quality determines the grade and quality of copper foil. There are two forming and manufacturing methods of "spinning" and "welding" for the titanium sleeve on the surface of the cathode roll. Althoughthe cathode roll produced by "welding" has many advantages，suchas low production cost，highproduction efficiency and the titanium sleeve is not affected by the diameter，while，the process also has some defects，that is，in the manufacturing process，a relatively obvious longitudinal weld will appear on the surface of the titanium sleeve，and this will cause a spot or bright band on the corresponding position of the copper foil surface in the subsequent production process，whichwill seriously reduce the production efficiency and affect the quality of copper foil. Therefore，the key technology of welding cathode roll is to use appropriate technical methods to control the microstructure in the weld zone （WZ） and its heat affected zone （HAZ）. In this study，TA1 was used as the material，and TA1 plate was welded by manual TIG welding，after welding，vacuum annealing was carried out at the temperature of 550~700 ℃ for 2 hto refine the grain in the weld zone and reduce the difference between the weld zone and the base metal，and sand blasting was primarily conducted after vacuum heat treatment to further refine the grain size in the weld area，and it could provide technical basis for the "welding" manufacturing of titanium sleeve of cathode roller. DMI-3000 m optical microscope （OM） was used to observe the microstructure of the substrate and eacharea after welding. The results showed that the base metal structure was mainly equiaxed at room temperature，the grain was fine and uniform，whichwas a standard equiaxed crystal. The microstructure of weld zone was mainly composed of partial columnar crystals and single fine needle secondary crystals α phase. The microstructure of the heat affected zone was coarse α phase and partially acicular secondary α phase. After welding，the microstructure of the weld zone was very different from that of the base metal，whichwas mainly reflected in：there were many irregular cross flake and acicular structures in the weld zone. This was because a lot of heat is generated in the welding process，and grain coarsening would occur near the fusion line. At the same time，due to the different influence degree of heat input，the microstructure of weld zone was mainly composed of coarsened columnar β phase along witha little acicular α phase. The microstructure of the heat affected zone was coarse α phase and partial acicular secondary α phase. In general，withthe increase of annealing temperature，the microstructure of eachregion of the welding had been refined to a certain extent. And it was found that annealing at 650 ℃ could get the best effect. At the same time，after heat treatment and sand blasting，the microstructure of the weld zone had been refined to a certain extent. The reason was that sandblasting provides highstrain conditions for the surface of the sample，resulting in a large number of dislocations on the surface. Dislocation density increased withthe increase of deformation，and high-density dislocations gradually formed dislocation walls，that was，sub grain boundaries. As the strain continued to increase，new dislocations were continuously generated，and then evolved into new sub-grain boundaries. At the same time，the initially formed sub-grain boundaries could evolve into grain boundaries，so that the grains were refined. Therefore，the microstructure of eachwelding area had been refined to a certain extent after sandblasting，thus further reduced the difference between the microstructure of the weld area and that of the substrate.