SYMPOSIA PAPER Published: 01 January 1978
STP26537S

Fracture Resistance of Ti-5A1-2.5Sn Extra-Low Interstitial Castings

Source

Fracture toughness and cyclic crack propagation data for Ti-5A1-2.5Sn extra-low interstitial (ELI) castings, 0.51 and 2.54 cm (0.20 and 1.00 in.) thick, at 394, 294, 77, and 20 K (250, 70, −320, and −423° F), are presented. Both surface flaw and compact tension geometries were tested. Comparison is made with other titanium alloys in both wrought and cast forms. Crack propagation resistance is comparable to wrought Ti-5A1-2.5Sn ELI, even with the extremely coarse as-cast grain size encountered.

Author Information

Fiftal, CF
Martin Marietta Aerospace, Denver, Colo.
Bolstad, DA
Martin Marietta Aerospace, New Orleans, La.
Misra, MS
Martin Marietta Aerospace, Los Angeles, Calif.
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Details
Developed by Committee: E08
Pages: 3–16
DOI: 10.1520/STP26537S
ISBN-EB: 978-0-8031-4721-8
ISBN-13: 978-0-8031-0591-1