CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
Prev
Next
|
|
|
Mechanical properties of self-irradiated single-crystal copper |
Li Wei-Na (李维娜)a, Xue Jian-Ming (薛建明)b c, Wang Jian-Xiang (王建祥)a, Duan Hui-Ling (段慧玲)a c |
a State Key Laboratory for Turbulence and Complex System, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China; b State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China; c Key Laboratory of High Energy Density Physics Simulation, Center for Applied Physics and Technology, Peking University, Beijing 100871, China |
|
|
Abstract Molecular dynamics simulations are performed to investigate the influence of irradiation damage on the mechanical properties of copper. In the simulation, the energy of primary knocked-on atoms (PKAs) ranges from 1 to 10 keV, and the results indicate that the number of point defects (vacancies and interstitials) increases linearly with the PKA energy. We choose three kinds of simulation samples: un-irradiated and irradiated samples, and comparison samples. The un-irradiated samples are defect-free, while irradiation induces vacancies and interstitials in the irradiated samples. It is found that due to the presence of the irradiation-induced defects, the compressive Young modulus of the single-crystal Cu increases, while the tensile Young modulus decreases, and that both the tensile and compressive yield stresses experience a dramatic decrease. To analyze the effects of vacancies and interstitials independently, the mechanical properties of the comparison samples, which only contain randomly distributed vacancies, are investigated. The results indicate that the vacancies are responsible for the change of Young modulus, while the interstitials determine the yield strain.
|
Received: 10 May 2013
Revised: 04 August 2013
Accepted manuscript online:
|
PACS:
|
61.80.-x
|
(Physical radiation effects, radiation damage)
|
|
61.82.Bg
|
(Metals and alloys)
|
|
62.20.-x
|
(Mechanical properties of solids)
|
|
02.70.Ns
|
(Molecular dynamics and particle methods)
|
|
Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB013101) and the National Natural Science Foundation of China (Grant Nos. 11172001, 91226202, and 11225208). |
Corresponding Authors:
Xue Jian-Ming, Duan Hui-Ling
E-mail: jmxue@pku.edu.cn;hlduan@pku.edu.cn
|
Cite this article:
Li Wei-Na (李维娜), Xue Jian-Ming (薛建明), Wang Jian-Xiang (王建祥), Duan Hui-Ling (段慧玲) Mechanical properties of self-irradiated single-crystal copper 2014 Chin. Phys. B 23 036101
|
[1] |
Caturla M J, Soneda N, Alonso E, Wirth B D, de la Rubia T D and Perlado J M 2000 J. Nucl. Mater. 276 13
|
[2] |
Zinkle S J and Singh B N 2000 J. Nucl. Mater. 283 306
|
[3] |
Domain C, Becquart C S and Malerba L 2004 J. Nucl. Mater. 335 121
|
[4] |
Singh B N, Foreman A J E and Trinkaus H 1997 J. Nucl. Mater. 249 103
|
[5] |
Singh B N, Horsewell A, Toft P and Edwards D J 1995 J. Nucl. Mater. 224 131
|
[6] |
Odette G R, Yamamoto T, Rathbun H J, He M Y, Hribernik M L and Rensman J W 2003 J. Nucl. Mater. 323 313
|
[7] |
Zinkle S J and Singh B N 1993 J. Nucl. Mater. 199 173
|
[8] |
Singh B N and Zinkle S J 1993 J. Nucl. Mater. 206 212
|
[9] |
Wolf D, Yamakov V, Phillpot S R, Mukherjee and Gleiter H 2005 Acta Mater. 53 1
|
[10] |
Meyers M A, Mishra A and Benson D J 2006 Prog. Mater. Sci. 51 427
|
[11] |
Lee J C, Park K W, Kim K H, FleuryE, Lee B J, Wakeda M and Shibutani Y 2007 J. Mater. Res. 22 3087
|
[12] |
Bacon D J, Calder A F, Gao F, Kapinos V G and Wooding S J 1995 Nucl. Instrum. Methods Phys. Res. B 102 37
|
[13] |
Bacon D J and Delarubia T D 1994 J. Nucl. Mater. 216 275
|
[14] |
Calder A F and Bacon D J 1993 J. Nucl. Mater. 207 25
|
[15] |
Stoller R E 1996 J. Nucl. Mater. 233 999
|
[16] |
StollerR E, Odette G R and Wirth B D 1997 J. Nucl. Mater. 251 49
|
[17] |
Becquart C S, Domain C, van Duysen J C and Raulot J M 2001 J. Nucl. Mater. 294 274
|
[18] |
Zou X Q, Xue J M and Wang Y G 2010 Chin. Phys. B 19 036102
|
[19] |
Li W N, Sun L X, Xue J M, Wang J X and Duan H L 2013 Nucl. Instr. Meth. B 307 158
|
[20] |
Sun L X, Lan C E, Zhao S J, Xue J M and Wang Y G 2012 J. Phys. D: Appl. Phys. 45 135403
|
[21] |
Mishin Y, Mehl M J, Papaconstantopoulos D A, Voter A F and Kress J D 2001 Phys. Rev. B 63 224106
|
[22] |
Ziegler J F, Biersack J P and Littmark U 1985 The Stopping and Range of Ions in Matter (New York: Pergamon)
|
[23] |
Plimpton S J 1995 J. Comput. Phys. 117 1
|
[24] |
Cerny M, Sob M, Pokluda J and Sandera P 2004 J. Phys.: Condens. Matter 16 1045
|
[25] |
Milstein F and Chantasiriwan S 1998 Phys. Rev. B 58 6006
|
[26] |
Honeycutt J D and Andersen H C 1987 J. Phys. Chem. 91 4950
|
[27] |
Stukowski A 2012 Modell. Simul. Mater. Sci. Eng. 20 045021
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|