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Journal of Thermal Science

, Volume 28, Issue 2, pp 370–377 | Cite as

Numerical Investigation of Transient Temperature Distribution during Ti-6Al-4V Selective Laser Melting

  • Xiaodong XingEmail author
  • Qiuyu Zhou
  • Shiyuan Wang
  • Liquan Wang
  • Fengchun Jiang
Article
  • 32 Downloads

Abstract

The transient temperature field in the powder bed has a crucial effect on the quality of parts fabricated using Selective Laser Melting (SLM). In this study, a finite element model is established regarding the variance of temperature-dependent thermal properties and transformation latent heat. The temperature distribution and melt pool dimensions of a laser scan track were obtained by varying multiple parameters (layer thickness, laser power and scan speed). The effects of transition of material state and heat source model are also analyzed in this paper. The finite element simulation results show that an increased laser power and/or decreased scan speed results in an elevated maximum temperature of the powder layer and a larger melt pool size. Furthermore, it is found that the maximum temperature is significantly lowered due to the heat diffusion into the previous sintered zone. The heat source model has to be selected properly according to the element size.

Keywords

Selective Laser Melting transient temperature field process parameters melt pool 

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Notes

Acknowledgements

This research was supported by Key Project of Applied Technology Research and Development Plan of Heilongjiang Province (Grants No. GA18A403).

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Copyright information

© Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xiaodong Xing
    • 1
    Email author
  • Qiuyu Zhou
    • 1
  • Shiyuan Wang
    • 1
  • Liquan Wang
    • 1
  • Fengchun Jiang
    • 2
  1. 1.College of Mechanical and Electrical EngineeringHarbin Engineering UniversityHarbinChina
  2. 2.College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbinChina

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