Abstract
The paper focuses on inelastic deformation of brittle materials, quasicrystals in particular. It is shown, that quasicrystals exhibit the normal indentation size effect (ISE) at room temperature, and the inverse one at elevated temperatures. Load-depth-curves exhibit distinct discontinuities, and unloading hysteresis was observed. The concept of energetic hardness is introduced to the calculation of nanohardness in general, and energetic arguments are used to discuss the ISE. Phason defect facilitated dislocation glide is proposed as a possible material displacement process for the smallest indents, whereas fragmentation and grain boundary sliding may be responsible for deformation of quasicrystals in the microhardness range.
Preview
Unable to display preview. Download preview PDF.
References
Bhushan, B., Kulkarni, A. V., Bonin, W. and Wyrobek, J. T. (1996), “Nanoindentation and picoindentation measurements using a capacitive transducer system in AFM”, Philos. Mag. A 74, 1117–1128.
Edagawa, K., Suzuki, T. and Takeuchi, S. (1997), “Ultra-microindentation of a Mg-Zn-Y icosahedral quasicrystal”, in Proc. of the 6th International Conference on Quasicrystals, Tokyo, 1997 (S. Takeuchi and T. Fujiwara eds.), World Scientific, Singapore.
Feuerbacher, M., Metzmacher, C, Wollgarten, M., Urban, K., Baufeld, B., Bartsch, M. and Messerschmidt, U. (1997), “Dislocations and plastic deformation of quasicrystals”, Mater. Sci. Engin. A226-228, 943–949.
Geyer, B., Bartsch, M., Feuerbacher, M., Urban, K. and Messerschmidt, U. (2000),”Plastic deformation of icosahedral Al-Pd-Mn singlequasicrystals”, Philos. Mag. A 80, 1151–1163.
Guyot, P. and Canova, G. (1999), “The plasticity of icosahedral quasicrystals”, Philos. Mag. A 79, 2815–2832.
Lim, Y. Y. and Chaudhri, M. M. (1999), “The effect of indenter load on the nanohardness of ductile metals”, Philos. Mag. A 79, 2979–3000.
Mikulla, R., Roth, J. and Trebin, H.-R. (1995), “Simulation of shear stress in two-dimensional decagonal quasicrystals”, Philos. Mag. B 71, 981–989.
Oliver, W. C. and Pharr, G. M. (1992), “An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments”, J. Mater. Res. 7, 1564–1583.
Pharr, G. M., Oliver, W. C. and Harding, D. S. (1991), “New evidence for a pressure induced phase transformation during the indentation of silicon”, J. Mater. Res. 6, 1129–1130.
Urban, K., Feuerbacher, M., Wollgarten, M., Bartsch, M. and Messerschmidt, U. (1999),“Mechanical properties of quasicrystals”, in Physical Properties of Quasicrystals (Z. M. Stadnik, ed.), pp. 361–401, Springer Verlag Berlin Heidelberg.
Wolf, B. and Paufler, P. (1999a), “Mechanical properties of icosahedral AlPdMn probed by indentation at variable temperatures”, phys. stat. sol. (a) 172, 341–361.
Wolf, B. and Paufler, P. (1999b), “Mechanical properties of quasicrystals investigated by indentation and scanning probe microscopes”, Surf. Interface Anal 27, 592–599.
Wolf, B., Bambauer, K.-O. and Paufler, P. (2000a), “ On the temperature dependence of the hardness of quasicrystals”, accepted for publication, to appear in Mater. Sci. Engin..
Wolf, B., Paufler, P. and Kempf, M. (2000b), “An energetic consideration of hardness”, submitted to Philos. Mag. A..
Wollgarten, M., Beyss, M., Urban, K., Liebertz, H. and Köster, U. (1993), “Direct evidence for plastic deformation of quasicrystals by means of a dislocation mechanism”, Phys. Rev. Lett. 71, 549–552.
Wollgarten, M. and Saka, H. (1999), “Microstructural investigations of the brittle-to-ductile transition in Al-Pd-Mn quasicrystals”, Philos. Mag. A 79, 2195–2208.
Yokoyama, Y., Inoue, A. and Masumoto, T. (1993), “Mechanical properties, fracture mode and deformation behaviour of Al70Pd20Mn10 single-quasicrystal”, Materials Transactions, JIM 34, 135–145.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2001 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Wolf, B., Paufler, P. (2001). Nanomechanical Properties of Brittle Matter. In: Bhushan, B. (eds) Fundamentals of Tribology and Bridging the Gap Between the Macro- and Micro/Nanoscales. NATO Science Series, vol 10. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0736-8_41
Download citation
DOI: https://doi.org/10.1007/978-94-010-0736-8_41
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-6837-3
Online ISBN: 978-94-010-0736-8
eBook Packages: Springer Book Archive