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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 373Positron Lifetime Calculation for Plastic Deformed...

Positron Lifetime Calculation for Plastic Deformed Nanocrystalline Copper

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Abstract:

Positron lifetime calculation has been performed on a computer-generated nanocrystalline copper with a mean grain size of 9.1 nm during its deformation. For the undeformed and deformed nanocrystalline copper, calculated positron lifetimes are around 157 ps which come from the positron annihilation in the free volume in grain boundaries. Due to the grain-boundary deformation mechanism, no vacancies or vacancy clusters will be induced in grains during the plastic deformation of the nanocrystalline copper, which is different to the deformation of the conventional polycrystal. From this point of view, in-situ positron annihilation measurements can provide important experimental information on the deformation mechanism of nanocrystalline metals.

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Positron Annihilation - ICPA-17

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Periodical:

Defect and Diffusion Forum (Volume 373)

Pages:

31-34

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.373.31

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Online since:

March 2017

Authors:

Kai Zhou*, Ting Zhang

Keywords:

Defect, Nanocrystalline Cu, Plastic Deformation, Positron Lifetime Calculation

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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[1] H. -E. Schaefer, R. Würschum, R. Birringer,H. Gleiter, Phys. Rev. B 38 (1988) 9545-9554.

DOI: 10.1103/physrevb.38.9545

[2] Jakub Čížek, Ivan Procházka, Miroslav Cieslar, Radomír Kužel, Jan Kuriplach, František Chmelík, Ivana Stulíková, František Bečvář, Oksana Melikhova, Rinat K. Islamgaliev, Phys. Rev. B 65 (2002) 094106.

DOI: 10.1103/physrevb.65.094106

[3] S. Van Petegem, F. Dalla Torre, D. Segers,H. Van Swygenhoven, Scripta Mater. 48 (2003) 17–22.

DOI: 10.1016/s1359-6462(02)00322-6

[4] Kai Zhou, Hui Li, JinBiao Pang, Zhu Wang, Philos. Mag. 92 (2012) 2079-(2088).

[5] Kai Zhou, Ting Zhang, Zhu Wang, Phys. Scr. 90 (2015) 105701.

[6] Hideaki Ohkubo, Z. Tang, Y. Nagai, M. Hasegawa, T. Tawara,M. Kiritani, Mater. Sci. Eng. A 350 (2003) 95-101.

[7] Jakob Schiøtz, Karsten W. Jacobsen, Science 301 (2003) 1357-1359.

[8] Kai Zhou, Bin Liu, Yijun Yao, Kun Zhong, Mater. Sci. Eng. A 615 (2014) 92–97.

[9] S. Traiviratana, E. M. Bringa, D. J. Benson,M. A. Meyers, Acta Mater. 56 (2008) 3874-3886.

DOI: 10.1016/j.actamat.2008.03.047

[10] S. Plimpton, J. Comp. Phys. 117 (1995) 1-19.

[11] X.W. Zhou, R.A. Johnson H.N.G. Wadley, Phys. Rev. B 69 (2004) 144113.

[12] W. Trifthauser J.D. McGervey, Appl. Phys. 6 (1975) 177-180.

[13] T. Torsti, T. Eirola, J. Enkovaara, T. Hakala, P. Havu, V. Havu, T. Hoynalanmaa, J. Ignatius, M. Lyly, I. Makkonen, T.T. Rantala, J. Ruokolainen, K. Ruotsalainen, E. Rasanen, H. Saarikoski M.J. Puska, Phys. Stat. Sol. B 243 (2006) 1016-1053.

DOI: 10.1002/pssb.200541348

[14] M. J. Puska,R. M. Nieminen, Rev. Mod. Phys. 66 (1994) 841-897.

[15] M. J. Puska,R. M. Nieminen, J. Phys. F: Met. Phys. 13 (1983) 333-346.

[16] E. Boroński,R. M. Nieminen, Phys. Rev. B 34 (1986) 3820-3831.

[17] K. Momma,F. Izumi, J. Appl. Crystallogr. 44 (2011) 1272-1276.

[18] K. Zhou, B. Liu, Y.J. Yao,K. Zhong, Mat. Sci. Eng. A 595 (2014) 118-125.

[19] J. Kuriplach, Appl. Surf. Sci. 194 (2002) 61-70.