STP1471

    Mechanical Properties of Cast Ti-Fe-0-N Alloys

    Published: Jan 2006


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    Abstract

    A recent addition to existing titanium alloys is the Super-TIX series (Nippon Steel Corp., Japan), which has intermediate strength between the strengths of CP Ti and Ti-6A1-4V as a result of balancing the Fe, O, and N concentrations. Two alloys in this series were investigated: Ti-l%Fe-0.35%O-0.01%N (Super-TIX800™; LN) and Ti-l%Fe-0.3%O-0.04%N (Super-TIX800N™; HN). These alloys were arc-melted and cast using an investment casting method, and their mechanical properties were examined. The yield strength (∼600 MPa) and tensile strength (∼680 MPa) were approximately 33 and 29° higher, respectively, than the corresponding strength of cast CP Ti (ASTM Grade 2). Their percent elongation was somewhat (but not significantly) higher (2–3 %) than that of Ti-6A-4V. On the other hand, the elongation of CP Ti was approximately 7 %. The moduli of elasticity of the alloys ranged from 100–120 GPa. These Ti-Fe-O-N alloys exhibit higher uniaxial yield and tensile strengths than CP Ti, which is currently used for dental applications.

    Keywords:

    titanium, titanium alloys, mechanical properties, biocompatibility


    Author Information:

    Koike, M
    Assistant Professor, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki,

    Guo, Q
    Research Assistant I, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, TX

    Brezner, M
    Research Assistant I, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, TX

    Fujii, H
    Chief Researcher, Steel Research Labs, Nippon Steel Corp., Chiba,

    Okabe, T
    Regents Professor and Chairman, Baylor College of Dentistry, Texas A&M University System Health Science Center, Dallas, TX


    Paper ID: STP37550S

    Committee/Subcommittee: F04.16

    DOI: 10.1520/STP37550S


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