Perpetua: The UAH Journal of Undergraduate Research


College of Engineering


Mechanical and Aerospace Engineering


Incorporation of additive manufacturing (AM) as another fabrication tool requires an understanding of the differences in material behavior from traditionally produced materials using casting, powder metallurgical or wrought processing. Since as-built AM parts typically have a rougher surface finish compared to parts subjected to traditional subtractive machining, post-processing methods to obtain a finer surface finish must be developed. This study evaluated the effect of various surface-finishing methods on additively manufactured Inconel 625. Blown powder deposition (BPD) was used to additively build a nominally 1 mm thick plate. After the build, specimens were subjected to: Chemically Accelerated Vibratory Finishing (CAVF), Chemical Milling (CM), and combinations of the two methods. Mechanical testing and microstructural characterization were used to evaluate the effect of the surface finish methods on the material. However, due to inhomogeneity of the as-built microstructure, no correlation could be made between the different surface finishes



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.