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所属单位：Shandong University, Weihai

发表刊物：Journal of The Electrochemical Society

关键字：TUBE-ELECTRODEALLOYMICROSTRUCTUREPERFORMANCEBEHAVIOR

摘要：Hastelloy X (HX) is widely used in the aerospace field for its excellent corrosion resistance and high-temperature mechanical properties that can be fabricated into complex structures directly by the selective laser melting (SLM) technique. However, SLM-printed (SLM-ed) HX with high strength and hardness is challenging to process using conventional manufacturing techniques and may result in machining flaws that don't fulfill engineering standards. Therefore, an ultrasonic-assisted electrochemical milling (UAECM) method using a tube electrode is proposed to fabricate high aspect ratio structures on SLM-ed HX with high-quality. Firstly, the passivation characteristics of SLM-ed HX before and after solid solution treatment (SST) were investigated using polarization curves and electrochemical impedance spectroscopy (EIS). Secondly, the electrochemical milling process and the electrode gap flow field were simulated. Then, the effect of processing parameters such as ultrasonic amplitude, electrical parameters, and mechanical parameters on the groove width and stability was investigated by the orthogonal and single factor experiments. Finally, the cavity and bump structures were machined by layered milling with an average groove width of 960 ± 15 μm, a groove depth of 4.4 mm, an aspect ratio of 4.5, and surface roughness of 1.524 μm and 1.622 μm, respectively, demonstrating the adaptability and machining accuracy of the UAECM method.

全部作者：Tong Shu, Kan Wang

第一作者：Wenchao Guan

论文类型：Research Paper

通讯作者：Yong Liu

论文编号：10.1149/1945-7111/acad2e

文献类型：Journal article

卷号：169

期号：12

页面范围：123507

ISSN号：0013-4651

是否译文：否

发表时间：4492-05-01