Investigation of Inclusion Formation Behavior in Additive Manufacturing of Ni-Based Superalloy

摘要

Recently, the technology of Additive Manufacturing (AM) is expected as the new manufacturing process because of its potential to manufacture complex structures without the need for tooling. Among several AM Processes, Selective Laser Melting (SLM) process irradiating laser to powder bed has been starting to apply to aerospace industry and medical and so on, because it is possible to produce precise and/or complicated parts. Generally, it is known that some mechanical properties of cast and wrought materials are influenced by metal inclusion. However, on the other hand, there are few reports about inclusion formation behavior in AM process and influence of several mechanical properties. In this study, it is investigated that inclusion compared Alloy718 powder prepared different amount of oxygen and nitrogen with AM materials for the purpose of appreciating inclusion formation behavior in SLM process.