SYMPOSIA PAPER Published: 01 January 1976
STP33948S

Effect of Specimen Size on Fracture Toughness of a Titanium Alloy

Source

This paper describes the effect of specimen size on slow crack growth and fracture toughness of the titanium alloy Ti-6A1-4V. The load versus crack opening displacement curve rises steeply after reaching the end of the linear part. Stable crack extension starts within the linear part of the P-v-curve. The crack growth resistance curve is independent of thickness B until KQ in the range 2 < B < 20 mm, leading to the conclusion that slow crack growth can occur in plane strain.

The secant method, leading to KQ at 2 percent crack extension, yields a specimen geometry dependent fracture toughness. KQ increases with width, W and is only slightly dependent on thickness, B.

The consequences of this behavior for fracture toughness determination in connection with the ASTM recommendation are discussed.

Author Information

Munz, D
DFVLR, Institut für Werkstoff-Forschung, Linder Höhe, Germany
Galda, KH
DFVLR, Institut für Werkstoff-Forschung, Linder Höhe, Germany
Link, F
DFVLR, Institut für Werkstoff-Forschung, Linder Höhe, Germany
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E08
Pages: 219–234
DOI: 10.1520/STP33948S
ISBN-EB: 978-0-8031-4669-3
ISBN-13: 978-0-8031-0509-6