TY - JOUR
T1 - Effects of modulation periods on mechanical properties of V/VN nano-multilayers
AU - Fu, Tao
AU - Zhang, Zijian
AU - Peng, Xianghe
AU - Weng, Shayuan
AU - Miao, Yuhan
AU - Zhao, Yinbo
AU - Fu, Shaoyun
AU - Hu, Ning
N1 - Funding Information:
The work is supported by National Natural Science Foundation of China (11802045, 11332013 and 11802047), Chongqing Postdoctoral Program for Innovative Talents (CQBX201804), China Postdoctoral Science Foundation funded project (2018M631058), and Chongqing Research Program of Basic Research and Frontier Technology (cstc2018jcyjAX0522). MD simulations were carried out at Supercomputing Center of Lv Liang Cloud Computing Center in China.
Funding Information:
The work is supported by National Natural Science Foundation of China ( 11802045 , 11332013 and 11802047 ), Chongqing Postdoctoral Program for Innovative Talents ( CQBX201804 ), China Postdoctoral Science Foundation funded project ( 2018M631058 ), and Chongqing Research Program of Basic Research and Frontier Technology ( cstc2018jcyjAX0522 ). MD simulations were carried out at Supercomputing Center of Lv Liang Cloud Computing Center in China.
Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Metal/ceramic nano-multilayers, which possess the advantages of both metal and ceramics, have attracted intensive attention. In this work, the mechanical properties of V/VN nano-multilayers with different modulation periods (λs) were investigated using molecular dynamics simulations. The relationships between the microstructures and stress-strain (σ - ε) curves during in-plane tension and out-of-plane compression were explored, and the effects of λ were discussed. It shows that: (i) three kinds of V/VN nano-multilayers with different interfacial structures have different stabilities during deformation; (ii) dislocations nucleate firstly from the interfaces, propagate on {111} planes in VN layers, and deposit on the adjacent interface, and finally shift to V layers with the increase of applied strain; (iii) the nano-multilayer with larger λ has larger elastic modulus, elastic limit and lattice integrity, and strain hardening and cracks would appear in the nano-multilayers with λ > 42.90 Å.
AB - Metal/ceramic nano-multilayers, which possess the advantages of both metal and ceramics, have attracted intensive attention. In this work, the mechanical properties of V/VN nano-multilayers with different modulation periods (λs) were investigated using molecular dynamics simulations. The relationships between the microstructures and stress-strain (σ - ε) curves during in-plane tension and out-of-plane compression were explored, and the effects of λ were discussed. It shows that: (i) three kinds of V/VN nano-multilayers with different interfacial structures have different stabilities during deformation; (ii) dislocations nucleate firstly from the interfaces, propagate on {111} planes in VN layers, and deposit on the adjacent interface, and finally shift to V layers with the increase of applied strain; (iii) the nano-multilayer with larger λ has larger elastic modulus, elastic limit and lattice integrity, and strain hardening and cracks would appear in the nano-multilayers with λ > 42.90 Å.
KW - Dislocation
KW - Interface
KW - MD simulations
KW - Modulation period
KW - V/VN nano-multilayers
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U2 - 10.1016/j.ceramint.2019.02.084
DO - 10.1016/j.ceramint.2019.02.084
M3 - Article
AN - SCOPUS:85061631851
VL - 45
SP - 10295
EP - 10303
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 8
ER -