Precipitation Effects in Mg-Zn Alloys Studied by Positron Annihilation and Hardness Testing

• Authors: P. Hruška , J. Čížek , M. Vlček , O. Melikhova , I. Procházka
• Languages of publication: EN

Abstracts

EN

In the present work positron annihilation spectroscopy combined with Vickers hardness testing were employed in order to investigate precipitation effects in Mg-Zn alloys. It was found that incoherent precipitates of a metastable Zn-rich phase formed in the samples isochronally annealed above 200C cause hardening of the alloy.

Keywords

EN

78.70.Bj; 61.72.J-

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 61.72.J-: Point defects and defect clusters

• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 3
• Pages: 718-721

Dates

published

2014-03

Contributors

author

P. Hruška

• Charles University in Prague, Faculty of Mathematics and Physics V Holešovičkách 2, 180 00 Praha 8, Czech Republic

author

J. Čížek

• Charles University in Prague, Faculty of Mathematics and Physics V Holešovičkách 2, 180 00 Praha 8, Czech Republic

author

M. Vlček

• Charles University in Prague, Faculty of Mathematics and Physics V Holešovičkách 2, 180 00 Praha 8, Czech Republic

author

O. Melikhova

• Charles University in Prague, Faculty of Mathematics and Physics V Holešovičkách 2, 180 00 Praha 8, Czech Republic

author

I. Procházka

• Charles University in Prague, Faculty of Mathematics and Physics V Holešovičkách 2, 180 00 Praha 8, Czech Republic

References

• [1] M. Staiger, A. Pietak, J. Huadmai, G. Dias, Biomaterials 27, 1728 (2006), doi:10.1016/j.biomaterials.2005.10.003
• [2] H. Okamoto, J. Phase Equilibria Diffus. 15, 129 (1994), doi:10.1007/BF02667700
• [3] P. Hautojärvi, in: Positrons in Solids, Ed. P. Hautojärvi, Springer-Verlag, Berlin 1979, p. 1
• [4] P. Asoka-Kumar, M. Alatalo, V. Ghosh, A. Kruseman, B. Nielsen, K. Lynn, Phys. Rev. Lett. 77, 2097 (1996), doi:10.1103/PhysRevLett.77.2097
• [5] F. Bečvář, J. Čížek, I. Procházka, J. Janotová, Nucl. Instrum. Methods Phys. Res. A 539, 372 (2005), doi:10.1016/j.nima.2004.09.031
• [6] J. Čížek, M. Vlček, I. Procházka, Nucl. Instrum. Methods Phys. Res. A 623, 982 (2010), doi:10.1016/j.nima.2010.07.046
• [7] J. Čížek, I. Procházka, B. Smola, I. Stulíková, V. Očenášek, J. Alloys Comp. 430, 92 (2007), doi:10.1016/j.jallcom.2006.03.097
• [8] J.M.C. Robles, E. Ogando, F. Plazaola, J. Phys., Condens. Matter 19, 176222 (2007), doi:10.1088/0953-8984/19/17/176222
• [9] W. Hume-Rothery, E. Rounsefell, J. Inst. Met. 41, 119 (1929)
• [10] X. Gao, J. Nie, Scr. Mater. 56, 645 (2007), doi:10.1016/j.scriptamat.2007.01.006
• [11] R. West, in Ref. [3], p. 89
• [12] P. Hautojärvi, C. Corbel, in: Proc. Int. School of Physics 'Enrico Fermi', Course CXXV, Eds. A. Dupasqier, A. Mills, IOS Press, Varenna 1995, 491
• [13] A. Somoza, M. Petkov, K. Lynn, A. Dupasquier, Phys. Rev. B 65, 094107 (2002), doi:10.1103/PhysRevB.65.094107

Identifiers

DOI

10.12693/APhysPolA.125.718