Effect of Helium-Argon Mixtures as Laser-Powder Bed Fusion Processing Atmospheres on the Properties of the Built Ti-6Al-4V Parts
The scope of the gases for Laser-Powder Bed Fusion is today limited to Argon and/or Nitrogen,thanks to their inert character when it comes to the most metal powders available.Ti-6Al-4V is processed with Argon to avoid the reaction of Nitrogen with Titanium.In this study,the noble gas Helium and Helium-Argon mixtures are used,in an attempt to enhance the production of Ti-6Al-4V parts.Helium,like Argon,will not react with the material upon collision with the laser beam.However,Helium is lighter,has a higher thermal conductivity and ionization energy than Argon.Thus,it is an interesting starting point for the understanding and development of process gases for Laser-Powder Bed Fusion.A window of laser parameters was investigated using gas mixtures of interest.Produced parts were characterized in terms of density,microstructure,hardness and mechanical properties.
Pauzon Camille Forêt Pierre Hryha Eduard Arunprasad Tanja
Department of Industrial and Materials Science,Chalmers University of Technology,SE-412 96,G(o)tebor Linde AG AT EMEA,Carl-von-Linde-Straβe 25,DE-85 716,Unterschleiβheim,Germany
国际会议
北京
英文
1633-1639
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）