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Properties and Near-Net-Shape Process of Powder Metallurgy Heat Resistant Titanium Alloy

  • : Liang, W1
  • : 1Aerospace Research Institute
  • : PDF Download
  • : 2012

Abstract

The prealloyed powder metallurgy (PM) process is studied in this paper to prepare PM TC11 (Ti-6.5Al-3.5Mo-1.5Zr-0.3Si) alloy, a kind of heat resistant titanium alloy. And HIP technology and PREP powders are used in the prealloyed processing to obtain full density material. Heat treatments are studied to optimize the microstructures and properties of the PM TC11 alloy. Near-Net-Shape processes are studied to fabricate PM TC11 parts. The results show that the PM TC11 alloy has the same good tensile properties as forged material and plus perfect high temperature elastic modulus. The microstructures of the PM TC11 alloy are fine and uniform and the typical ones are basket weave structures surrounded by equiaxed ?. The PM TC11 alloy and suitable near-net-shape process can be used in the field of fabricating high performance-to-cost, high reliability, lightweight and heat resistant parts.
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