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首页> 外文期刊>International Journal of Electrochemical Science >Microstructure and Surface Morphology of Inconel 625 Alloy Prepared by Laser Melting Deposition using Abrasive-Assisted Jet Electrochemical Machining
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Microstructure and Surface Morphology of Inconel 625 Alloy Prepared by Laser Melting Deposition using Abrasive-Assisted Jet Electrochemical Machining

机译：磨料辅助喷射电化学加工激光熔解沉积Inconel 625合金的组织和表面形态

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摘要

Laser melting deposition (LMD) is typically used for forming and repairing large-scale complexnickel-based superalloy parts, such as aero engines. Defects occur on the surface and structure duringLMD and after the completion of forming, so LMD-jet electrochemical machining (JECM) hybridfabrication was proposed, and a novel abrasive-assisted JECM device was designed. The processingtime, and the various processing conditions of the hybrid fabrication were investigated, on account ofthe balance of processing efficiency and quality. Experiments showed that the oxidation layer of theLMDed samples could be removed entirely under the processing of 90 JECM cycles, while theabrasive-assisted soft brush could efficiently remove the electrolytic products and the abrasive-assistedhard grinding head could efficiently remove the hard-to-electrolyze residual particles in theoverlapping areas. The organization microstructure and the surface morphology were characterizedusing a scanning electron microscope and a 3D optical profiler. The influence that a non-homogeneousdistribution of grains (both size and orientation) had on JECM was discussed. The fluctuations of thecurrent efficiencies throughout the processes were analyzed and discussed.
机译：激光熔化沉积（LMD）通常用于形成和修复大型复合镍基超合金零件，例如航空发动机。在LMD过程中以及成型完成后，表面和结构上都会出现缺陷，因此提出了LMD-喷射电化学加工（JECM）混合加工的方法，并设计了一种新型的磨料辅助JECM装置。考虑到加工效率和质量之间的平衡，研究了混合制造的加工时间和各种加工条件。实验表明，在90个JECM循环过程中，LMDed样品的氧化层可以完全去除，而磨料辅助的软刷可以有效去除电解产物，而磨料辅助的硬磨头可以有效去除难以电解的残留物。重叠区域中的粒子。使用扫描电子显微镜和3D光学轮廓仪表征组织的微观结构和表面形态。讨论了晶粒的非均匀分布（尺寸和取向）对JECM的影响。分析和讨论了整个过程中电流效率的波动。

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