单辊极冷甩带法铜锌合金微观结构研究  

Microstructure Investigation of Single-Roller Ultra-Cold Strip Casting of Cu-Zn Alloys

作　　者：聂永星 吴桢舵 NIE Yongxing;WU Zhenduo(Faculty of Science,The Chinese University of Hong Kong,Hong Kong 999077,China;City University of Hong Kong(Dongguan),Dongguan 523000,China)

机构地区：[1]香港中文大学理学院,中国香港999077 [2]香港城市大学(东莞)(筹),广东东莞523000

出　　处：《铜业工程》2023年第2期69-73,共5页Copper Engineering

基　　金：松山湖材料实验室开放课题基金项目(2022SLABFN19)资助。

摘　　要：本研究主要探讨了单辊极冷甩带法生产铜锌(Cu-Zn)合金带材的过程控制参数,包括轮速、喷气压力和喷嘴端与轮子表面的角度。结果表明:(1)随着辊轮转速的增加,Cu-Zn合金样品厚度减小,微观结构趋于均匀;(2)喷射压力的增加导致样品厚度增加;(3)在一定条件下,喷嘴与辊轮的接触角对Cu-Zn合金样品厚度的影响较小,但接触角较小时微观结构更为均匀;(4)氩气保护气体可以减少Cu-Zn合金的氧化,提高过冷度,进而使得微观结构更均匀。本研究结论为优化Cu-Zn合金制品的铸造工艺提供了理论依据和技术支持,为高性能材料制备提供了新途径。This study mainly investigated the process control parameters for the production of Cu-Zn alloy strips by single-roller ultracold strip casting,including wheel speed,jet pressure and nozzle tip angle with the wheel surface.The results showed that:(1)as the wheel speed increased,Cu-Zn alloy sample thickness decreased,and the microstructure became more uniform;(2)the increase of jet pressure led to an increase in Cu-Zn alloy sample thickness;(3)under certain conditions,the contact angle between the nozzle and the wheel had a relatively small impact on Cu-Zn alloy sample thickness,but a smaller contact angle resulted in a more uniform microstructure;(4)argon protective gas could reduce the oxidation of Cu-Zn alloy,increase the degree of undercooling,and thus make the microstructure more uniform.The results of this study provided a theoretical basis and technical support for optimizing the casting process of Cu-Zn alloy products and offered a new approach to meet the demand for high-performance materials.

关 键 词：铜锌合金 枝晶 单辊极冷甩带 过冷 

分 类 号：TG146.1[一般工业技术—材料科学与工程]