STP796: Processing and Mechanical Properties of Investment Cast Ti-6Al-4V ELI Alloy for Surgical Implants: A Progress Report

    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.

    Pages: 17    Published: Jan 1983


    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


    Paper ID: STP28932S

    Committee/Subcommittee: B10.01

    DOI: 10.1520/STP28932S


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