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Microscopic Analyses of 316 L Stainless Steel Powder from Additive Layer Manufacturing Process

Metallic powders are used to manufacture complex parts using Additive Layer Manufacture (ALM) process in the aerospace, automotive and bio-medical sectors [1]. Although the technology has grown in recent years, it still faces many manufacturing and raw material related challenges. Typical manufacturing challenges include the lack of achieving close dimensional tolerances when compared to traditional machining [2] and a lower fatigue life due to the inherent internal porosity in parts manufactured via ALM [3]. Internationally, studies are ongoing in an attempt to resolve these challenges.