The residual stress state at internal interfaces produced by direct energy deposition type additive manufacturing process
Additive manufacturing processes such as direct energy deposition describes the layerwise production of components or repair of existing structures. Both the new manufacture of either components manufactured by AM or a combination of conventional wrought or cast with AM will involve the production of interfaces between fully cooled material and newly deposited AM material. At these interfaces, the cooling behaviour is different compared to continuous deposition. These differences have been observed to create discontinuities of the residual stress fields which should be studied further to understand their implication on applications. This proposed experiment aims to characterize with higher spatial resolution the residual stress state at these interfaces and the influence of process parameters on their generation and their stability during heat treatment.
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EVANS Alexander; BRUNO Giovanni; CABEZA Sandra; PIRLING Thilo and ULBRICHT Alexander. (2021). The residual stress state at internal interfaces produced by direct energy deposition type additive manufacturing process. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-295
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