articleMaterials Science and Engineering ADec 1, 2017HYBRID OA

Effect of scanning strategies on residual stress and mechanical properties of Selective Laser Melted Ti6Al4V

HAHaider AliHGHassan GhadbeigiKMKamran Mumtaz

University of Sheffield

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Abstract

During the Selective Laser Melting (SLM) process large temperature gradients can form, generating a mismatch in elastic deformation that can lead to high levels of residual stress within the additively manufactured metallic structure. Rapid melt pool solidification causes SLM processed Ti6Al4V to form a martensitic microstructure with a ductility generally lower than a hot working equivalent. Currently post-process heat treatments can be applied to SLM components to remove in-built residual stress and improve ductility. This study examined the effect of scanning strategy (scan vector lengths and scan vector rotation) and rescanning strategy on residual stress formation and mechanical properties of SLM Ti6Al4V…

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536
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27.87
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100%
References
41
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Authors

3

Topics & keywords

Topics
Keywords
  • Selective laser melting
  • Materials science
  • Residual stress
  • Titanium alloy
  • Ductility (Earth science)
  • Composite material
  • Deformation (meteorology)
  • Microstructure
UN Sustainable Development Goals
  • Affordable and clean energy
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