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

CF Fiftal; DA Bolstad; MS Misra

doi:10.1520/STP26537S

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

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

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