Atomistic insights on the influence of pre-oxide shell layer and size on the compressive mechanical properties of nickel nanowires | |
Aral G1; Islam M2; Wang YJ(王云江)3; Ogata S4,5; van Duin ACT6 | |
Corresponding Author | Aral, Gurcan(gurcanaral@iyte.edu.tr) |
Source Publication | JOURNAL OF APPLIED PHYSICS |
2019-04-28 | |
Volume | 125Issue:16Pages:13 |
ISSN | 0021-8979 |
Abstract | We used ReaxFF reactive molecular dynamics simulations to systematically investigate the effects of a pre-oxide shell layer on the mechanical properties of [001]-oriented nickel (Ni) nanowires (NWs) under the uniaxial compressive loading at room temperature. The pristine Ni NWs are considered as references to compare the mechanical properties of the oxide-coated NWs. We found that the mechanical properties of pristine Ni NWs under uniaxial compression are sensitive to both the diameter of the NWs and the pre-oxide shell layer, and their combined effect determines the overall stress and strain behaviors. The compressive strength of the pristine NWs decreases significantly with the decreasing diameter. We observe that the native defected amorphous pre-oxide shell layer with similar to 1.0 nm thickness leads to a lowering of the mechanical compressive resistivity of NWs and causes additional softening. Oxide-coated NWs exhibit a lesser size-dependent unique properties and a lower overall yield strength compared to their pristine counterparts. The reduction of the mechanical compressive yield stress and strain with the decreasing diameter is due to the substantial changes in plastic flow as well as correlated with the existence of the pre-oxide shell layer as compared to its pristine counterpart. Particularly, pre-oxide shell layers have pronounced effects on the initiation of initial dislocations to onset plastic deformation and consequently on the overall plastic response. Published under license by AIP Publishing. |
DOI | 10.1063/1.5080640 |
URL | 查看原文 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000466779900034 |
WOS Keyword | MOLECULAR-DYNAMICS ; DISLOCATION NUCLEATION ; OXIDATION ; BEHAVIOR ; STRESS ; SCALE ; NI |
WOS Research Area | Physics |
WOS Subject | Physics, Applied |
Funding Project | Scientific and Technological Research Council of Turkey (TUBITAK)-BIDEB 2219[1059B191400364] ; Elements Strategy Initiative for Structural Materials (ESISM) ; JSPS KAKENHI[JP18H05453] ; JSPS KAKENHI[JP25630013] ; JSPS KAKENHI[JP17H01238] ; JSPS KAKENHI[JP17K18827] |
Funding Organization | Scientific and Technological Research Council of Turkey (TUBITAK)-BIDEB 2219 ; Elements Strategy Initiative for Structural Materials (ESISM) ; JSPS KAKENHI |
Classification | 二类 |
Ranking | 3 |
Contributor | Aral, Gurcan |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/79188 |
Collection | 非线性力学国家重点实验室 |
Affiliation | 1.Izmir Inst Technol, Dept Phys, TR-35430 Izmir, Turkey; 2.Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Osaka Univ, Dept Mech Sci & Bioengn, Osaka 5608531, Japan; 5.Kyoto Univ, Ctr Elements Strategy Initiat Struct Mat ESISM, Kyoto 6068501, Japan; 6.Penn State Univ, Dept Mech & Nucl Engn, State Coll, PA 16801 USA |
Recommended Citation GB/T 7714 | Aral G,Islam M,Wang YJ,et al. Atomistic insights on the influence of pre-oxide shell layer and size on the compressive mechanical properties of nickel nanowires[J]. JOURNAL OF APPLIED PHYSICS,2019,125,16,:13. |
APA | Aral G,Islam M,王云江,Ogata S,&van Duin ACT.(2019).Atomistic insights on the influence of pre-oxide shell layer and size on the compressive mechanical properties of nickel nanowires.JOURNAL OF APPLIED PHYSICS,125(16),13. |
MLA | Aral G,et al."Atomistic insights on the influence of pre-oxide shell layer and size on the compressive mechanical properties of nickel nanowires".JOURNAL OF APPLIED PHYSICS 125.16(2019):13. |
Files in This Item: | Download All | |||||
File Name/Size | DocType | Version | Access | License | ||
Jp2019180.pdf(7288KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment