Residual stresses remain inside a material after processing, when it has reached equilibrium with its environment. Rapid cooling of high localised thermal gradients lock in stresses that arise from localised compressive and tensile stresses introduced during rapid thermal expansion of material around the melt pool. The immediate effect of thermal strains during the build process is distortion. How can you limit the residual stresses in SLM?
SLM is known to introduce large amounts of residual stress. Two mechanisms can be distinguished which cause residual stresses.
Localised high temperature gradient
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