Influence of Cracking Direction on Interfacial Fracture in Bicrystals With Symmetric Tilt Boundary
- Creators
- Mohan, R.
-
Ortiz, M.
- Shih, C. F.
Abstract
Recent experiments by Wang (1990) on copper bicrystals with a [110] symmetric tilt of 38.9 degrees have shown that the mode of fracture of these bicrystals, i.e., whether fracture is of a ductile or brittle nature, depends on the direction of cracking. An analysis of this effect within the framework of continuum crystal plasticity is presented. The formulation accounts for finite deformations and finite lattice rotations, as well as for the full three-dimensional collection of slip systems in FCC crystals. Our results indicate that, whereas the level of stress ahead of the crack tip is similar for the ductile and brittle cracking directions, the sizes of the plastic regions differ significantly in the two cases.
Additional Information
© 1992 American Society of Mechanical Engineers. Manuscript received by the ASME Applied Mechanics Division, Sept. 18, 1990; final revision, Mar. 15, 1991. The support of the National Science Foundation through the Materials Research Group at Brown University, Grant DMR-9002994, is gratefully acknowledged. We are also indebted to J. R. Rice and M. Saeedvafa for making available to us the results of their computations.Attached Files
Published - MohanOrtizShih1992c.pdf
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Additional details
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- 83908
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- CaltechAUTHORS:20171213-163502078
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2017-12-14Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
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