The Notch-Bend Strength of Titanium, Aluminum, and Copper-Base Alloys in Heavy Sections

[+] Author and Article Information
Huai Pu Chu

Materials Laboratory, Naval Ship Research and Development Center, Annapolis, Md.

J. Basic Eng 91(4), 830-840 (Dec 01, 1969) (11 pages) doi:10.1115/1.3571227 History: Received January 28, 1969; Online November 03, 2011


The notch-bend strength of four titanium, eight aluminum, and eight copper-base alloys was measured. Specimen sizes ranged from 0.4 to 4 in. in section thickness. All materials showed a geometrical size effect on notch strength. Only the high-strength aluminum alloys were found to be prone to brittle fracture. In general, 7Al-2Cb-1Ta titanium, 5456-H321 and 6061-T6 aluminum, and the copper alloys can be considered as notch-tough materials. The titanium alloys exhibited maximum notch toughness with 6–7 percent aluminum content. Determination of plane-strain fracture toughness (KIc ) values for the aluminum alloys is briefly discussed.

Copyright © 1969 by ASME
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