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RESEARCH PAPERS

The Biaxial Strengthening of Textured Titanium

[+] Author and Article Information
H. W. Babel, D. A. Eitman, R. W. McIver

Materials Research and Production Methods, Metal-Ceramics Branch, Douglas Aircraft Company, Inc., Santa Monica, Calif.

J. Basic Eng 89(1), 13-18 (Mar 01, 1967) (6 pages) doi:10.1115/1.3609543 History: Received February 28, 1966; Online November 03, 2011

Abstract

The purpose of this investigation was to develop an understanding of the biaxial behavior of titanium sheet. An experimental test method was developed and found to provide homogeneous stress fields for obtaining biaxial data in a variety of stress states. Data were obtained using the same specimen geometry for 1-to-2 and 1-to-1 axial-to-hoop stress states. Significant increases in the biaxial yield strength were obtained over those predicted by von Mises’ yield criterion for isotropic materials. Very high biaxial burst strengths were also obtained; the maximum was 246 ksi for annealed Ti-5Al-2.5 Sn alloy in a 1-to-1 stress state. The data followed the general form predicted by Hill’s model for anisotropic materials.

Copyright © 1967 by ASME
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