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Author:

Yang, Lingwei (Yang, Lingwei.) | Chen, Yunsheng (Chen, Yunsheng.) | Chen, Jiao (Chen, Jiao.) | Wang, Chuanyun (Wang, Chuanyun.) | He, Guangyu (He, Guangyu.)

Indexed by:

SCIE EI Scopus Web of Science

Abstract:

This work focuses on the anisotropic deformation and fracture mechanisms of a typical physical vapor deposited TiN/ZrN multilayer, employing novel nanoindentation and micropillar compression techniques. The results highlight a stronger nanoindentation response of the multilayer when loaded perpendicular (90 degrees) to the layer orientation, and the deformation was mainly controlled by the plasticity of ZrN layers. In comparison, at parallel (0 degrees) orientation, the kink banding and the induced cracking may weaken the constraint beneath the indenter, thus leading to degraded hardness. By considering the anisotropic deformation mechanisms, nanoindentation finite element modeling was further performed to give reliable predictions on the strength at the inclined orientation. The modeling results suggest a dominant deformation mechanism that occurred mainly in the ZrN layers, with minor contribution from the stiff TiN layers. As a result, a minimized hardness was predicted at 45 degrees loading direction with respect to layer orientation. Finally, the micropillar compressions show a brittle nature of both 90 degrees and 0 degrees oriented micropillars, and a higher fracture strain was obtained at 90 degrees, due to the observed crack termination mechanism at this orientation.

Keyword:

Anisotropy Micropillar Multilayers Nanoindentation Nanomechanics

Author Community:

  • [ 1 ] [Yang, Lingwei]China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang 621000, Sichuan, Peoples R China
  • [ 2 ] [Chen, Yunsheng]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Peoples R China
  • [ 3 ] [Chen, Jiao]Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China
  • [ 4 ] [Wang, Chuanyun]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
  • [ 5 ] [He, Guangyu]Air Force Engn Univ, Sci & Technol Plasma Dynam Lab, Xian 710038, Peoples R China

Reprint Author's Address:

  • [Yang, Lingwei]China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang 621000, Sichuan, Peoples R China;;[He, Guangyu]Air Force Engn Univ, Sci & Technol Plasma Dynam Lab, Xian 710038, Peoples R China;;

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Source :

CERAMICS INTERNATIONAL

ISSN: 0272-8842

Year: 2020

Issue: 10

Volume: 46

Page: 15502-15509

4 . 5 2 7

JCR@2020

4 . 5 2 7

JCR@2020

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:84

JCR Journal Grade:2

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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