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Fabrication and properties of heavy section extrusions of Ti-6Al-6V-2Sn and Ti-8Mo-8V-2Fe-3AI alloys

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Abstract

This study is concerned with the fabrication in heavy section of the titanium alloys Ti-8Mo-8V-2Fe-3Al (Ti-8823) and Ti-6Al-6V-2Sn (Ti-662). The technique utilized to achieve 84 pct reduction during the extrusion of heavy section cylindrical hollows is given. The response to subsequent aging of both alloys is described in terms of the effect on important mechanical properties such as yield and ultimate tensile strength, ductility and fracture toughness. For the Ti-8823 alloy extruded in heavy section, it is shown that the optimum heat treatment consists of aging directly after hot working rather than the more common solution treatment and age cycle. With the former heat treatment, uniform through the thickness mechanical properties are obtained. Uniform mechanical properties are also obtained through the section of the Ti-662 extrusion with a solutionizing and overaging heat treatment.

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Authors and Affiliations

  1. Army Materials and Mechanics Research Center, 02172, Watertown, MA

    R. Chait (Supervisory Materials Engineer)

  2. Forged Products, Cameron Iron Works, 77001, Houston, TX

    C. Stead (Chief Metallurgist)

Authors
  1. R. Chait
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  2. C. Stead
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Chait, R., Stead, C. Fabrication and properties of heavy section extrusions of Ti-6Al-6V-2Sn and Ti-8Mo-8V-2Fe-3AI alloys. Metall Trans B 8, 371–376 (1977). https://doi.org/10.1007/BF02696923

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  • DOI: https://doi.org/10.1007/BF02696923

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