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Effect of Niobium and Zirconium Content on Microstructure and Mechanical Properties of TiNbZr Ternary Alloy Produced by Powder Metallurgy

  • : Duvaizem, J H1
  • : 1Energy & Nuclear Research Institute
  • : PDF Download
  • : 2012

Abstract

In this present work TiNbZr ternary alloy was produced by powder metallurgy (PM) using blended elemental technique with hydride powders, followed by high speed planetary ball milling, cold isostatic pressing and sintering under high vacuum. TiNbZr alloy was prepared in different compositions, maintaining Ti content at 74%wt with Nb and Zr contents ranging amongst 6 and 20%wt. Powder size distribution was analyzed using CILAS equipment and chemically characterized by X-ray Fluorescence. Elastic modulus and hardness were determined using a dynamic mechanical analyzer and a Vickers hardness tester. Microstructures and phases were observed and analyzed employing scanning electron microscopy and X-ray diffraction. The content variation of Nb and Zr showed influence on the amount of ? phase precipitation and Widmanstトtten patterns formation. Variations in mechanical properties were also observed.
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