RESIDUAL STRESS IN TI6AL4V OBJECTS PRODUCED BY DIRECT METAL LASER SINTERING

Authors

  • Ian van Zyl Central University of Technology, Free State, South Africa
  • Ina Yadroitsava Central University of Technology, Free State, South Africa
  • Igor Yadroitsev Central University of Technology, Free State, South Africa

DOI:

https://doi.org/10.7166/27-4-1468

Keywords:

direct metal laser sintering, residual stress, Titanium alloy

Abstract

Direct Metal Laser Sintering produces 3D objects using a layer-by- layer method in which powder is deposited in thin layers. Laser beam scans over the powder fusing powder particles as well as the previous layer. High-concentration of laser energy input leads to high thermal gradients which induce residual stress within the as- built parts. Ti6Al4V (ELI) samples have been manufactured by EOSINT M280 system at prescribed by EOS process-parameters. Residual stresses were measured by XRD method. Microstructure, values and directions of principal stresses inTi6Al4V DMLS samples were analysed. 

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Published

2016-12-06

How to Cite

van Zyl, I., Yadroitsava, I., & Yadroitsev, I. (2016). RESIDUAL STRESS IN TI6AL4V OBJECTS PRODUCED BY DIRECT METAL LASER SINTERING. The South African Journal of Industrial Engineering, 27(4), 134–141. https://doi.org/10.7166/27-4-1468

Issue

Vol. 27 No. 4 (2016)

Section

General Articles

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