Optimizing the Microstructure of Implant Alloy TiA15Fe2.5 by Microprobe Analysis

  • U. Zwicker
  • J. Breme
  • K. Nigge
Part of the Mikrochimica Acta Supplementum book series (MIKROCHIMICA, volume 11)


The (α + β)-titanium alloy TiAl5Fe2.5 was developed mainly for medical applications1−5. With this (α + β)-alloy the microstructure and simultaneously the mechanical properties can be optimized by deformation temperature and/or by heat treatment in the (α + β)-temperature range below the β/(α + β)-transition temperature. This temperature increases with oxygen content and was found to be 960 °C with 0.05% O1. In the (α + β)-temperature range the amount of the β- and of the α-phase and the chemical composition of both phases depends on temperature. According to the ternary diagram Al-Fe-Ti with decreasing temperature the amount of the β-phase is diminished and the iron content of the β-phase is increased. It was shown that in the temperature region of 500–600 °C after the transformation of the β-phase to (α + β) the iron content in the β-phase can reach an amount which is sufficient to precipitate the intermetallic compound TiFe and an age-hardening effect can be observed6. In order to optimize the microstructure of the (α + β)-alloy TiA15Fe2.5 and to investigate the transformation behaviour of the α- and β-phase during aging it was intended to analyze by microprobe analysis of Al and Fe the α- and the β-phase of different microstructures obtained by deformation and heat treatment in the (α + β)-region.


Iron Content Microprobe Analysis Deformation Temperature Alloy TiAl3 Rolled Sample 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • U. Zwicker
    • 1
  • J. Breme
    • 1
  • K. Nigge
    • 1
  1. 1.Lehrstuhl Werkstoffwissenschaften (Metalle)Universität Erlangen-NürnbergErlangenFederal Republic of Germany

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