Post Processing of Additive Manufactured Components Using High Energy Beam Process

Abstract

Additive manufacturing (AM) has emerged as a revolutionary technology for the production of complex and customized components. However, achieving the desired surface quality, mechanical properties, and dimensional accuracy in AM parts remains a significant challenge. This Ph.D. research focuses on the post-processing of additive manufactured components using high-energy beam processes to address these challenges. newlineThe primary objective of this study is to investigate and optimize high-energy beam processes, including a plasma beam setup, for enhancing the quality of AM components, specifically those fabricated with stainless steel 316L. The research explores novel techniques for surface smoothing and finishing through plasma beam remelting, tailored to the unique properties of stainless steel 316L. By selectively melting and re-solidifying the surface layers, the aim is to reduce roughness, improve the overall surface finish, and enhance the mechanical properties of the additively manufactured parts. newlineFurthermore, the study introduces a unique approach wherein a plasma beam, utilized for part building in the AM process, is repurposed for post-processing through remelting. This innovative strategy enables the seamless transition from manufacturing to post-processing within the same setup, thereby streamlining the production process and reducing the need for multiple configurations. newlineAdditionally, the research delves into advanced surface modification techniques, such as surface alloying and surface nitriding, specifically tailored to improve the mechanical properties of stainless steel 316L. Surface alloying involves the controlled introduction of additional materials to the surface through the plasma beam, thereby modifying the surface composition and enhancing specific properties such as wear resistance and corrosion resistance. Surface nitriding, achieved through the application of a high-energy beam, aims to improve surface hardness and durability, particularly in the context of stainless steel 316L. newlineThe research