STP204

    The Effect of Temperature on the Uniform Elongation of Titanium Alloys

    Published: Jan 1957


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    Abstract

    The limits of uniform elongation were measured for typical alpha, alpha-beta, and beta titanium alloys. Each alloy was studied in three microstructural conditions over a temperature range from −75 to 300 C (−103 to 570 F).

    Highest uniform elongation was obtained for commercial titanium (alpha), whereas that for the beta-quenched 7.5 Cr, 7.5 Mo titanium alloy was low. The presence of massive alpha in the alpha-beta alloys increases their uniform elongation.

    The dependence of uniform elongation on temperature is marked, particularly in the two-phase alloys. Maximum values were obtained at about 200 C (392 F).

    Measurements of uniform elongation from residual strain agree well with values of δmax; the values of the flow exponent (from the flow equation, σ = Bδn) are consistently higher.


    Author Information:

    Holden, F C
    Assistant Chief, Consultant, and Chief, Nonferrous Physical Metallurgy Division, Battelle Memorial Institute, Columbus, Ohio.

    Ogden, H R
    Assistant Chief, Consultant, and Chief, Nonferrous Physical Metallurgy Division, Battelle Memorial Institute, Columbus, Ohio.

    Jaffee, R I
    Assistant Chief, Consultant, and Chief, Nonferrous Physical Metallurgy Division, Battelle Memorial Institute, Columbus, Ohio.


    Paper ID: STP44145S

    Committee/Subcommittee: B02.08

    DOI: 10.1520/STP44145S


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