Hostname: page-component-848d4c4894-8kt4b Total loading time: 0 Render date: 2024-07-07T12:20:01.321Z Has data issue: false hasContentIssue false
  • English
  • Français

Analysis of Compression Behavior of a [011] TA Single Crystal with Orientation Imaging Microscopy and Crystal Plasticity

Published online by Cambridge University Press:  15 February 2011

A.J. Schwartz ,
J.S. Stölken ,
W.E. King ,
G.H. Campbell ,
D.H. Lassila ,
J.Y. Shu ,
S. Sun  and
B.L. Adams
A.J. Schwartz
Affiliation:
Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, CA 94550ajschwartz@llnl.gov
J.S. Stölken
Affiliation:
Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, CA 94550
W.E. King
Affiliation:
Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, CA 94550
G.H. Campbell
Affiliation:
Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, CA 94550
D.H. Lassila
Affiliation:
Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, CA 94550
J.Y. Shu
Affiliation:
Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, CA 94550
S. Sun
Affiliation:
Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA 15213
B.L. Adams
Affiliation:
Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA 15213
Get access

Abstract

High-purity tantalum single crystal cylinders oriented with [011] parallel to the cylinder axis were deformed 10, 20, and 30 percent in compression. The engineering stress-strain curve exhibited an up-turn at strains greater than ∼20% while the samples took on an ellipsoidal shape during testing, elongated along the [100] direction with almost no dimensional change along [011]. Two orthogonal planes were selected for characterization using Orientation Imaging Microscopy (OIM): one plane containing [100] and [011] (longitudinal) and the other in the plane containing [011] and [011] (transverse). OIM revealed patterns of alternating crystal rotations that develop as a function of strain and exhibit evolving length scales. The spacing and magnitude of these alternating misorientations increases in number density and decreases in spacing with increasing strain. Classical crystal plasticity calculations were performed to simulate the effects of compression deformation with and without the presence of friction. The calculated stressstrain response, local lattice reorientations, and specimen shape are compared with experiment.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 539: Symposium M – Fracture & Ductile vs. Brittle Behavior - Theory, Modelling… , 1998 , 221
Copyright
Copyright © Materials Research Society 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Hsü, T.C., Materials Research and Standards, 9, No. 12, p. 20 (1969).Google Scholar
2. Mason, T.A. and Adams, B.L., Journal Of Metals, 46, No. 10, p. 43 (1994).Google Scholar
3. Cook, M., and Larke, E.C., Journal Inst. Metals, 71, p. 371, 1945.Google Scholar
4. Gunsekera, J.S., Havranek, J., and Littlejohn, M.H., Journal of Engineering Materials and Technology, 104, p. 275 (1982).Google Scholar
5. Ray, K.K. and Mallik, A.K., Trans. Met. Soc. of AIME, 14A, p. 155 (1983).Google Scholar
6. Singh, A.P. and Padmanabhan, K.A., Journal of Materials Science, 26, p. 5481 (1991).Google Scholar
7. Hosford, W.F. Jr., Trans. Met. Soc. of AIME, 230, p. 12 (1964).Google Scholar
8. Siebel, E., and Pomp, A., Kaiser-Wilhelm Inst. EisenForsch, 9, p. 157 (1927).Google Scholar
9. Male, A.T., and Cockcroft, M.G., Journal Inst. Metals, 93, p. 38 (1964-1965).Google Scholar
10. Hill, R., J. Mechanics and Physics of Solids, 11, p. 305, (1963).Google Scholar
11. Collins, I.F., J. Mechanics and Physics of Solids, 17, p. 323, (1969).Google Scholar
12. Asaro, R.J., Advances in Mechanics, 23, p. 1, (1983).Google Scholar
13. Raffo, P.L., and Mitchell, T.E., Trans. Met. Soc. of AIME, 242, p. 907 (1968).Google Scholar
14. Smialek, R.L. and Mitchell, T.E., Phil. Mag., 22, p. 1105 (1970).Google Scholar
15. Schwartz, A.J., King, W. E., Campbell, G. H., Stölken, J. S., Lassila, D. H., Sun, S., and Adams, B. L., Accepted, Journal of Engineering Materials and Technology (1998).Google Scholar
16. Avitzur, B., Metal Forming, Processes and Analysis, p. 78, McGraw-Hill, NY, (1968).Google Scholar
17. Ryffel, H.H., Ed., Machinery's Handbook, 22nd Ed, Industrial Press, NY p. 436 (1984).Google Scholar
18. Kothari, M. and Anand, L., J. Mechanics and Physics of Solids, 46, No 1, p. 51, (1998).Google Scholar
19. Maker, B.N., Nike3D: A nonlinear, implicit, three-dimensional finite element code for solid and structural mechanics - user's manual, LLNL, UCRL-MA-105268 Rev 1, (1995).Google Scholar
20. Chin, G.Y., Thurston, R.N., and Nesbitt, E.A., Trans. Metal. AIME, 236, p. 69 (1966).Google Scholar
21. Acharya, A., and Shawki, G., J. Mech. and Physics of Solids, 43, No. 11, p. 1751 (1995).Google Scholar