On the origin of microcracking behind a crack tip
Document Type
Article
Publication Date
6-1978
Department
Department of Materials Science and Engineering
Abstract
Calculations based on both linear elasticity and small scale yielding in an elastic-plastic body indicate that large normal stresses exist behind the tip of the main crack and are related to the presence of microcracks which intersect a fracture surface. This concept is applied to the specific case of microcracks which intersect a mixed mode I/II fatigue crack in Ti-40 at. pct V alloy single crystals. The microcracks, which occur on {110} and {111} planes, are associated with the radial distribution of stresses normal to the observed microcrack plane. In the Ti-40V alloy examined, microcracking may occur by cleavage on rarely observed {110} and {111} planes because of the combination of large normal stresses and flow at the microcrack tip which is controlled by the stress field imposed by the main crack.
Publication Title
Metallurgical Transactions A
Recommended Citation
Stout, M.,
&
Koss, D.
(1978).
On the origin of microcracking behind a crack tip.
Metallurgical Transactions A,
9(6), 835-839.
http://doi.org/10.1007/BF02649793
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4425
Publisher's Statement
© 1978 American Society for Metals and The Metallurgical Society of Aime. Publisher’s version of record: https://doi.org/10.1007/BF02649793