SYMPOSIA PAPER
Published:
01 January 1981
STP33421S
Microstructural Origin of Flutes and Their Use in Distinguishing Striationless Fatigue Cleavage from Stress-Corrosion Cracking in Titanium Alloys
SourcePostfracture analysis does not always distinguish striationless low-stress fatigue from stress-corrosion cracking (SCC), since both are characterized by cleavage, together with other less distinct fracture modes. Studies of identical specimens of Ti-8Al-1Mo-1V broken under both conditions suggest that the presence of certain microplastic fracture features called flutes may be uniquely characteristic of SCC, and absent from low-stress striationless fatigue fractures. Some new observations concerning the microstructural origins of flutes verify that they arise from a tendency toward planar slip in α and α-β alloys and from the presence of multiple cleavage during crack propagation under certain circumstances, including SCC.
Author Information
Meyn, DA
Metallurgists Naval Research Laboratory, Washington, D.C.
Brooks, EJ
Metallurgists Naval Research Laboratory, Washington, D.C.
Related
Reprints and Permissions
Details
Developed by Committee: E08
Pages: 5–31
DOI: 10.1520/STP33421S
ISBN-EB: 978-0-8031-4799-7
ISBN-13: 978-0-8031-0733-5