STP796

    Processing and Mechanical Properties of Investment Cast Ti-6Al-4V ELI Alloy for Surgical Implants: A Progress Report

    Published: Jan 1983


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    Abstract

    Recent advancements in the production of titanium alloy investment castings have enabled manufacturers to offer high-integrity net-shape components. Effective material utilization and attractive lead times for providing a finished product have fostered a growing interest in applying cast titanium technology to the production of surgical implant devices.

    Howmet Turbine Components Corp., a major producer of titanium castings for the aerospace industry, is currently evaluating the potential of investment cast Ti-6Al-4V ELI alloy [ASTM Specification for Titanium 6Al-4V ELI Alloy for Surgical Implant Applications (F 136-79)] for surgical implant devices. Manufacturing processes such as hot isostatic pressing (HIP) and weld repair, vital to production of net-shape titanium alloy castings, have been evaluated for cast Ti-6Al-4V ELI material. Smooth and notched tensile properties, as well as impact and fatigue strength, have been investigated with favorable results.

    Keywords:

    Ti-6Al-4V ELI alloy, investment casting, surgical implants, consumable electrode-arc furnace, hot isostatic pressing (HIP), impact resistance, tensile strength, ductility, fatigue crack initiation, titanium alloy, implant materials


    Author Information:

    Smickley, RJ
    Manager of materials development and project engineer, Howmet Turbine Components Corp., Whitehall, Mich.

    Bednarz, LP
    Manager of materials development and project engineer, Howmet Turbine Components Corp., Whitehall, Mich.


    Paper ID: STP28932S

    Committee/Subcommittee: B10.01

    DOI: 10.1520/STP28932S


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