EAP - Estonian Journal of Engineering Publications

Estonian Journal of Engineering

2013 2012 2011 2010 2009 Vol. 15, Issue 4 Vol. 15, Issue 3 Vol. 15, Issue 2 Vol. 15, Issue 1 2008

Open Access Journal

In situ tensile testing in SEM of Al-Al₄C₃ nanomaterials; pp. 247–254

PDF | doi: 10.3176/eng.2009.4.01

Authors

Michal Besterci, Oksana Velgosová, Jozef Ivan, Pavol Hvizdoš, Tibor Kvačkaj, Priit Kulu

Abstract

The deformation and fracture mechanisms of Al-Al₄C₃ nanomaterials with 4 vol% of Al₄C₃ phase has been analysed using the technique “in situ tensile testing in SEM”. It has been shown that the deformation process causes break-up of large Al₄C₃ particles and decohesion of smaller ones. The final fracture path is influenced also by boundaries of nanograins, through which the principal crack propagates towards the sample exterior surface. Based on the experimental observations, a model of damage and fracture mechanisms has been proposed.

References

1. Besterci, M. and Ivan, J. Failure mechanism of dispersion strengthened Al-Al₄C₃ systems. J. Mater. Sci. Lett., 1996, 15, 2071–2074.

2. Besterci, M. and Ivan, J. The mechanism of the failure of the dispersion-strengthened Cu–Al₂O₃ system. J. Mater. Sci. Lett., 1998, 17, 773–776.
doi:10.1023/A:1006639700906

3. Besterci, M., Ivan, J., Kováč, L., Weissgaerber, T. and Sauer, C. Strain and fracture mechanism of Cu–TiC. Mater. Lett., 1999, 38, 270–274.
doi:10.1016/S0167-577X(98)00171-2

4. Besterci, M., Ivan, J., Kováč, L., Weissgaerber, T. and Sauer, C. A model of deformation mechanism of the system Cu-TiC. Kovové Mater., 1998, 36, 239–244.

5. Besterci, M., Ivan, J. and Kováč, L. Influence of volume fraction of Al₂O₃ particles on fracture of the Cu-Al₂O₃ system. Kovové Mater., 2000, 38, 21–28.

6. Besterci, M., Ivan, J. and Kováč, L. Influence of Al₂O₃ particles volume fraction on fracture mechanism in the Cu–Al₂O₃ system. Mater. Lett., 2000, 46, 181–184.
doi:10.1016/S0167-577X(00)00164-6

7. Besterci, M., Ivan, J., Velgosová, O. and Pešek, L. Damage mechanism of Al-Al₄C₃ system with high volume fraction of secondary phase. Kovové Mater., 2001, 39, 361–367.

8. Besterci, M., Velgosová, O., Ivan, J., Hvizdoš, P. and Kohútek, I. Influence of volume fraction on fracture mechanism of Al-Al₄C₃ system studied by “in-situ tensile test in SEM”. Kovové Mater, 2008, 46, 139–143.

9. Mocellin, A., Fougerest, F. and Gobin, P. F. J. A study of damage under tensile loading in a new Al-Si-Fe alloy processed by the Osprey route. Mater. Sci., 1993, 28, 4855–4861.
doi:10.1007/BF00361147

10. Velísek, R. and Ivan, J. Mechanism of “in-situ deformation in SEM” Al-Si system. Kovové Mater., 1994, 32, 531–539.

11. Jangg, G., Šlesár, M., Besterci, M., Ďurišin, J. and Schröder, K. Influence of heat treatment during manufacturing of Al-Al₄C₃ materials on microstructure and properties. Powder Metallurgy Int., 1989, 5, 25–30.

12. Jangg, G., Zbiral, J. and Wu, S. Einfluß des Mahlens und der Wärmebehandlung bei Strangpreßprodukten aus dispersionsverfestigten Al-Al₄C₃ Werkstoffen. Aluminium, 1992, 68, 238–246.

13. Broutman, L. V. and Krock, R. H. Analysis of deformation of Al-Si system. Compos. Mater., 1974, 5, 27–38.

14. Jangg, G., Vasgura, H., Schröder, K., Šlesár, M. and Besterci, M. In Proc. Int. Conference on Powder Metallurgy PM 86. Düsseldorf, 1986, 989–999.

15. Korb, G., Jangg, G. and Kutner, F. Dispersionsverfestigte Al-Al₄C₃ Werkstoffe. Draht, 1979, 30, 318–327.

16. Šalunov, J., Šlesár, M., Besterci, M., Oppenheim, H. and Jangg, G. Einfluss der Herstellungsbedingungen auf die Eigenschaften von dispersionsverfestigten Al-Al₄C₃ Werkstoffen. Metall, 1986, 6, 601–609.

17. Besterci, M., Sülleiová, K. and Kvačkaj, T. Fracture micromechanisms of copper nanomaterials prepared by ECAP. Kovové Mater., 2008,46, 309–311.

18. Lukáč, P. and Trojanová, Z. Deformation and damping behaviours of microcrystalline Mg reinforced with ceramic nanoparticles. Kovové Mater., 2006, 44, 243–249.

19. Valiev, R. Z. Approach to nanostructured solids through the studies of submicron grained polycrystals. Nanostruct. Mater., 1995, 6, 73–85.
doi:10.1016/0965-9773(95)00031-3

20. Valiev, R. Z. In Proc. Metallic Materials with High Structural Efficiency. NATO Science Series, Kiev (Senkov, O. N., Miracle, D. B. and Firstov, S. A., eds.). IOS Press, Amsterdam and Kluwer Acad. Publ., Dordrecht, 2003, 79–89.

21. Zhu, Y. T., Huang, J. Y., Gubicza, J., Ungár, T., Wang, Y. M., Ma, E. and Valiev, R. Z. Nanostructures in Ti processed by severe plastic deformation. J. Mater. Res., 2002, 18, 1908–1917.
doi:10.1557/JMR.2003.0267

22. Valiev, R. Z. and Alexandrov, I. V. Nanostrukturnye Materialy Poluchennye Intensivnoj Plasticheskoj Deformaciej. Logos, Moscow, 2000 (in Russian).

23. Kozlov, E. V. and Koneva, M. V. Features of work hardening of polycrystals with nanograins. Mater. Sci. Forum, 2008, 35, 584–586.

Back to Issue

→ Back issues