3-Dimensional finite element modeling of selective laser melting Ti-6AL-4V alloy

C. H. Fu, Y. B. Guo

Research output: Contribution to conferencePaperpeer-review

30 Scopus citations

Abstract

Selective laser melting (SLM) is widely used in making three-dimensional functional parts layer by layer. Temperature magnitude and history during SLM directly determine the molten pool dimensions and surface integrity. However, due to the transient nature and small size of the molten pool, the temperature gradient and the molten pool size are very challenging to measure and control. A 3-dimensional finite element simulation model has been developed to simulate multi-layer deposition of Ti-6Al-4V in SLM. A physics-based layer build-up approach coupled with a surface moving heat flux was incorporated into the modeling process. The melting pool shape and dimensions were predicted and experimentally validated. Temperature gradient and thermal history in the multi-layer build-up process was also obtained. Furthermore, the influences of process parameters and materials on the melting process were evaluated.

Original languageEnglish (US)
Pages1129-1144
Number of pages16
StatePublished - 2014
Externally publishedYes
Event25th Annual International Solid Freeform Fabrication Symposium � An Additive Manufacturing Conference, SFF 2014 - Austin, United States
Duration: Aug 4 2014Aug 6 2014

Conference

Conference25th Annual International Solid Freeform Fabrication Symposium � An Additive Manufacturing Conference, SFF 2014
CountryUnited States
CityAustin
Period8/4/148/6/14

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Keywords

  • FEA
  • Molten pool
  • Selective laser melting
  • Temperature gradient

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