316L Powder Reuse for Metal Additive Manufacturing
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Metal additive manufacturing via laser powder bed fusion is challenged by low powder utilization. The ability to reuse metal powder will improve the process efficiency. 316L powder was reused twelve times during this study, completing thirty-one builds over one year and collecting 380 powder samples. The process, solidified samples, and powder were analyzed to develop an understanding of powder reuse implications. Solidified sample characteristics were affected more by slight process variations than by cycling of the powder. While a small percentage of powder was greatly affected by processing, the bulk powder only observed a slight increase in powder size.