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Schottky defects induced effects on the behaviors of high velocity shock compression of MgO
Zhang, Chuanguo1,4; Wang, Xianlong1,2; Zhang, Jie1,2; Yang, Kaishuai1,2; Cheng, Ya1,2; Zeng, Zhi1,2,4; Zhou, Xianming3; Lin, Haiqing4
2017
Source PublicationRSC ADVANCES
Volume7Issue:72Pages:45304-45310
AbstractMolecular dynamics (MD) simulation was performed on high velocity plane shock compression of sodium chloride MgO along [100] lattice direction using a long-range coulombic potential. It was found that the shock compressions of MgO revealed three distinct regions depending on piston velocities, i.e., single elastic shock wave, two-wave structure consisting of an elastic wave followed by a plastic deformation wave, and single plastic deformation shock wave. The critical pressure of 120 GPa was obtained for the transition from elastic to plastic deformation under the high strain rate of 10(10) s(-1). For getting a better understanding the experimental results, we also investigated the effects of Schottky defects in MgO single crystal on the Hugoniot Elastic Limit (HEL), the velocity of shock wave and the critical piston velocity (CPV) resulting in plastic deformation. Our results demonstrated that the HEL decreases from 120 GPa to 100 GPa, and the CPV decreases a little from 2.8 km s(-1) to 2.2 km s(-1). Significantly, a double yielding phenomenon occurs for shock wave propagating in MgO sample with Schottky defects, i.e., homogeneous nucleation of dislocations accompanied by vacancy emission of dislocations, which has never been reported before. This work helps to clarify the contradictory results of HEL of MgO in the literature and to understand the plastic deformation mechanism of MgO.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationChina Postdoctoral Science Foundation(2016M590586) ; China Postdoctoral Science Foundation(2016M590586) ; National Science Foundation of China(11605231 ; National Science Foundation of China(11605231 ; Center for Computational Science of CASHIPS ; Center for Computational Science of CASHIPS ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; 11674329 ; 11674329 ; 11504381 ; 11504381 ; 11534012 ; 11534012 ; NSAF U1230202) ; NSAF U1230202) ; China Postdoctoral Science Foundation(2016M590586) ; China Postdoctoral Science Foundation(2016M590586) ; National Science Foundation of China(11605231 ; National Science Foundation of China(11605231 ; Center for Computational Science of CASHIPS ; Center for Computational Science of CASHIPS ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; 11674329 ; 11674329 ; 11504381 ; 11504381 ; 11534012 ; 11534012 ; NSAF U1230202) ; NSAF U1230202)
DOI10.1039/c7ra09303a
WOS KeywordEQUATION-OF-STATE ; MAGNESIUM-OXIDE ; MOLECULAR-DYNAMICS ; HIGH-PRESSURE ; METALS ; GPA ; ELASTICITY ; SIMULATION ; INITIATION ; STRENGTH
Indexed BySCI
Language英语
Funding OrganizationChina Postdoctoral Science Foundation(2016M590586) ; China Postdoctoral Science Foundation(2016M590586) ; National Science Foundation of China(11605231 ; National Science Foundation of China(11605231 ; Center for Computational Science of CASHIPS ; Center for Computational Science of CASHIPS ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; 11674329 ; 11674329 ; 11504381 ; 11504381 ; 11534012 ; 11534012 ; NSAF U1230202) ; NSAF U1230202) ; China Postdoctoral Science Foundation(2016M590586) ; China Postdoctoral Science Foundation(2016M590586) ; National Science Foundation of China(11605231 ; National Science Foundation of China(11605231 ; Center for Computational Science of CASHIPS ; Center for Computational Science of CASHIPS ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; ScGrid of Supercomputing Center and Computer Network Information Center of Chinese Academy of Sciences ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe- 2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; 11674329 ; 11674329 ; 11504381 ; 11504381 ; 11534012 ; 11534012 ; NSAF U1230202) ; NSAF U1230202)
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000412147000009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33712
Collection中科院固体物理研究所
Affiliation1.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
3.Natl Key Lab Shock Wave & Detonat Phys, Inst Fluid Phys, Mianyang 621900, Peoples R China
4.Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Chuanguo,Wang, Xianlong,Zhang, Jie,et al. Schottky defects induced effects on the behaviors of high velocity shock compression of MgO[J]. RSC ADVANCES,2017,7(72):45304-45310.
APA Zhang, Chuanguo.,Wang, Xianlong.,Zhang, Jie.,Yang, Kaishuai.,Cheng, Ya.,...&Lin, Haiqing.(2017).Schottky defects induced effects on the behaviors of high velocity shock compression of MgO.RSC ADVANCES,7(72),45304-45310.
MLA Zhang, Chuanguo,et al."Schottky defects induced effects on the behaviors of high velocity shock compression of MgO".RSC ADVANCES 7.72(2017):45304-45310.
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