Residual stresses built up in additively manufactured components: processes comparison and post processing influence
Currently there is a great manufacturing trend in producing higher quality net shape components of challenging geometries. This worldwide tendency has resulted in numerous large-scale research projects on additive manufacturing (AM). The frontrunner European project AMAZE is now the biggest project of its kind in the world. The project’s underlying aim is to rapidly produce large defect-free additively-manufactured metallic alloy components up to two metres in size. One of the major challenges in the project is to understand and control the internal stress distribution in AM parts. Residual stresses generated in a AM part can be significant, and typically lead to unacceptable distortion or degradation of mechanical properties. Therefore, the deep scientific understanding of residual stress/strain distribution is essential for ensuring quality and performance in high-tech AM parts. The aim of this proposal is to compare residual stresses generated in AM components produced by different techniques as well as to investigate process parameters and post processing treatments such as machining, heat treatment and substrate removal.
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TERZI Sofiane; PIRLING Thilo and SZOST Blanka Angelika. (2014). Residual stresses built up in additively manufactured components: processes comparison and post processing influence. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-156