SYMPOSIA PAPER Published: 01 January 1957
STP44145S

The Effect of Temperature on the Uniform Elongation of Titanium Alloys

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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
Nonferrous Physical Metallurgy Division, Battelle Memorial Institute, Columbus, Ohio.
Ogden, H, R
Nonferrous Physical Metallurgy Division, Battelle Memorial Institute, Columbus, Ohio.
Jaffee, R, I
Nonferrous Physical Metallurgy Division, Battelle Memorial Institute, Columbus, Ohio.
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Details
Developed by Committee: B02
Pages: 14–31
DOI: 10.1520/STP44145S
ISBN-EB: 978-0-8031-6204-4
ISBN-13: 978-0-8031-6205-1