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Post Sintering Treatment Of Blended Elemental Powder Metallurgy Titanium Alloy Components

  • : Youngmoo Kim1, Young-Beom Song1, Sung Ho Lee1, Young-Sam Kwon2
  • : 1Agency for Defense Development, 2Cetatech Co.
  • : PDF Download
  • : 2016

Abstract

From an economic viewpoint, the blended elemental approach in titanium powder metallurgy is attractive to produce a component or a preform to be further processed. However, the near-fully density of the component could not be achieved through sintering. Therefore, post sintering treatments should be conducted to enhance the density resulting in improve their performance. Until now, substantial research efforts on post sintering processes have been performed; such as hot isostatic pressing, forging and extrusion. Through these processes, the mechanical properties of the final titanium components are enhanced due to the removal of residual proes and microstructural refinement. In this study, various post sintering treatments, such as hot isostatic pressing and hot forging, were conducted. In addition, the microstructural changes and resultant mechanical properties with various processing conditions were also investigated.

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