Effect of strain field on displacement cascade in tungsten studied by molecular dynamics simulation
文献类型：期刊论文
| 作者 | Wang, D.1,2; Gao, N.1; Wang, Z. G.1; Gao, X.1; He, W. H.1,2; Cui, M. H.1; Pang, L. L.1; Zhu, Y. B.1 |
| 刊名 | Nuclear instruments & methods in physics research section b-beam interactions with materials and atoms
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 384页码:68-75 |
| ISSN号 | 0168-583X |
| 关键词 | Strain field Tungsten Molecular dynamics Displacement cascade |
| DOI | 10.1016/j.nimb.2016.08.006 |
| 通讯作者 | Gao, n.(ning.gao@impcas.ac.cn) ; Wang, z. g.(zhgwang@impcas.ac.cn) |
| 英文摘要 | Using atomistic methods, the coupling effect of strain field and displacement cascade in body-centered cubic (bcc) tungsten is directly simulated by molecular dynamics (md) simulations at different temperatures. the values of the hydrostatic and uniaxial (parallel or perpendicular to primary knock-on atom (pica) direction) strains are from 2% to 2% and the temperature is from 100 to 1000 k. because of the annealing effect, the influence of strain on radiation damage at low temperature has been proved to be more significant than that at high temperature. when the cascade proceeds under the hydrostatic strain, the frenkel pair (fp) production, the fraction of defect in cluster and the average size of the defect cluster, all increase at tensile state and decrease at compressive state. when the cascade is under uniaxial strain, the effect of strain parallel to pica direction is less than the effect of hydrostatic strain, while the effect of strain perpendicular to pica direction can be negligible. under the uniaxial strain along (1 1 1) direction, the sia and sia cluster is observed to orientate along the strain direction at tensile state and the uniaxial compressive strain with direction perpendicular to (1 i 1) has led to the similar preferred nucleation. all these results indicate that under irradiation, the tensile state should be avoided for materials used in nuclear power plants. (c) 2016 elsevier b.v. all rights reserved. |
| WOS关键词 | CENTERED-CUBIC IRON ; COMPUTER-SIMULATION ; DEFECT PRODUCTION ; RADIATION-DAMAGE ; MD SIMULATIONS ; METALS ; GENERATION ; POTENTIALS ; EVALUATE |
| WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| WOS类目 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000383941400010 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376025 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Gao, N.; Wang, Z. G. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, D.,Gao, N.,Wang, Z. G.,et al. Effect of strain field on displacement cascade in tungsten studied by molecular dynamics simulation[J]. Nuclear instruments & methods in physics research section b-beam interactions with materials and atoms,2016,384:68-75. |
| APA | Wang, D..,Gao, N..,Wang, Z. G..,Gao, X..,He, W. H..,...&Zhu, Y. B..(2016).Effect of strain field on displacement cascade in tungsten studied by molecular dynamics simulation.Nuclear instruments & methods in physics research section b-beam interactions with materials and atoms,384,68-75. |
| MLA | Wang, D.,et al."Effect of strain field on displacement cascade in tungsten studied by molecular dynamics simulation".Nuclear instruments & methods in physics research section b-beam interactions with materials and atoms 384(2016):68-75. |
入库方式： iSwitch采集
来源：中国科学院大学
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。