Skip to main content Accessibility help
×
Home

Evaluation of Critical Resolved Shear Stresses for Various Plastic Deformation Mechanisms To Understand Mechanical Properties of Magnesium-Yttrium Alloys

  • T. Mineta (a1) and S. Miura (a2)

Abstract

In order to understand enhanced mechanical properties of magnesium-yttrium (Mg-Y) alloys, applied stresses which were required to operate independent plastic deformation mechanisms on various stress axes were evaluated. Moreover, for this analysis, mechanical tests including newly-established testing method “pure-shear test” were conducted to evaluate Critical Resolved Shear Stresses (CRSSes) for various plastic deformation mechanisms of Mg-Y solid solution alloy single crystals with various Y concentration. Relatively higher solid solution strengthening of dominant plastic deformation mechanisms such as basal slip and extension twin at room temperature, results in increase in the activation of non-basal slip system. By a simple analysis based on von-Mises criterion with experimental CRSS values, it is revealed that enhanced mechanical properties of Mg-Y alloys might be attributed to the decrease of difference in the activity of plastic deformation mechanisms by Y addition.

Copyright

References

Hide All
1. Yoshinaga, H. and Horiuchi, R., Trans. JIM, 4,1 (1963).
2. Obara, T., Yoshinaga, H. and Morozumi, S., ActaMetallurgica, 21, 845 (1973).
3. Yoshinaga, H. and Horiuchi, R., Trans. JIM, 4, 134 (1963).
4. Yoshinaga, H., Obara, T. and Morozumi, S., Mater. Sci. Eng.,12, 255(1973).
5. Ando, S., Nakamura, K., Takashima, K. and Tonda, H., Keikinzoku, 42, 765 (1992).
6. Uesugi, T., Kohyama, M., Kohzu, M., Higashi, K., JSME annual meeting,2002-6, 217 (2002).
7. Bell, R. L. and Cahn, R. W., Proc. Roy. Soc. A239, 494 (1957).
8. Chino, Y., Kado, M. and Mabuchi, M., Materials Science and Engineering A,494, 343 (2008).
9. Sandlöbes, S., Friák, M., Zaefferer, S., Dick, A., Yi, S., Letzig, D., Pei, Z., Zhu, L.-F., Neugebauer, J. and Raabe, D., Acta Materialia,60, 3011 (2012).
10. Agnew, S. R., Yoo, M. H. and Tome, C. N., Acta Materialia,49, 4277 (2001).
11. Miura, S., Imagawa, S., Toyoda, T., Ohkubo, K. and Mohri, T., Materials Transactions, JIM, 49, 952 (2008).
12. Mineta, T., Miura, S., Mukai, T., Ueda, M. and Mohri, T., J. Japan Inst. Met. Mater, 77, 466(2013).
13. Hußnätter, W., Merklein, M., International Journal of Material Forming, 1, 233 (2008).
14. Akhtar, A. and Teghtsoonian, E., Acta Metallurgica,17, 1351 (1969).
15. Flynn, P. W., J. Mote and J. E. Dorn,Trans. Met. Soc. AIME, 221, 1148 (1961).
16. Ando, S., Tsushida, M. and Kitahara, H., Collected Abstracts of the 2013 Spring Meeting of the Japan Inst. Metals and Materials, No. 413 (2013).
17. Stohr, J. F. and Poirier, J. P., Philos. Mag., 25, 1313(1972).
18. Mises, R. v., Angew, Z., Jounal of Applied Mathematics and Mechanics, 8, 161 (1928)
19. Cotton, J. D. and Kaufman, M. J., Scripta Metallurgica et Materialia, 25, 2395 (1991).

Keywords

Evaluation of Critical Resolved Shear Stresses for Various Plastic Deformation Mechanisms To Understand Mechanical Properties of Magnesium-Yttrium Alloys

  • T. Mineta (a1) and S. Miura (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed