Improved back stress and synergetic strain hardening in coarse-grain/nanostructure laminates

Yanfei Wang; Muxin Yang; Xiaolong Ma; Mingsai Wang; Kun Yin; Aihui Huang; Chongxiang Huang

doi:10.1016/j.msea.2018.04.107

Improved back stress and synergetic strain hardening in coarse-grain/nanostructure laminates

Yanfei Wang
, Muxin Yang
, Xiaolong Ma
, Mingsai Wang
, Kun Yin
, Aihui Huang
, Chongxiang Huang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

179 Citations (Scopus)

Abstract

The effect of back stress on the mechanical behaviors of heterogeneous material is studied in two modeled heterogeneous laminates, i.e. laminated structure with a nanostructured (NS) Cu-Zn alloy layer sandwiched between two coarse-grained (CG) pure Cu layers. The improved tensile ductility of NS layer is revealed and attributed to the constraint from the stable CG layers. It is found that the elastic/plastic interaction between NS and CG layers is capable of significantly improving the back stress, which makes a significant contribution to the synergetic strain hardening in low strain stage. Furthermore, a higher mechanical incompatibility permits stronger and longer mutual interaction between layers, i.e. coupling effect, which contributes to a higher back stress. These results improve our understanding about the role of back stress on mechanical behaviors of heterogeneous laminate materials.

Original language	English
Pages (from-to)	113-118
Journal	Materials Science and Engineering A
Volume	727
DOIs	https://doi.org/10.1016/j.msea.2018.04.107
Publication status	Published - 6 Jun 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Back stress
Elastic/plastic interaction
Laminate
Nanostructure
Strain hardening

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title = "Improved back stress and synergetic strain hardening in coarse-grain/nanostructure laminates",

abstract = "The effect of back stress on the mechanical behaviors of heterogeneous material is studied in two modeled heterogeneous laminates, i.e. laminated structure with a nanostructured (NS) Cu-Zn alloy layer sandwiched between two coarse-grained (CG) pure Cu layers. The improved tensile ductility of NS layer is revealed and attributed to the constraint from the stable CG layers. It is found that the elastic/plastic interaction between NS and CG layers is capable of significantly improving the back stress, which makes a significant contribution to the synergetic strain hardening in low strain stage. Furthermore, a higher mechanical incompatibility permits stronger and longer mutual interaction between layers, i.e. coupling effect, which contributes to a higher back stress. These results improve our understanding about the role of back stress on mechanical behaviors of heterogeneous laminate materials.",

keywords = "Back stress, Elastic/plastic interaction, Laminate, Nanostructure, Strain hardening",

author = "Yanfei Wang and Muxin Yang and Xiaolong Ma and Mingsai Wang and Kun Yin and Aihui Huang and Chongxiang Huang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

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TY - JOUR

T1 - Improved back stress and synergetic strain hardening in coarse-grain/nanostructure laminates

AU - Wang, Yanfei

AU - Yang, Muxin

AU - Ma, Xiaolong

AU - Wang, Mingsai

AU - Yin, Kun

AU - Huang, Aihui

AU - Huang, Chongxiang

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/6/6

Y1 - 2018/6/6

N2 - The effect of back stress on the mechanical behaviors of heterogeneous material is studied in two modeled heterogeneous laminates, i.e. laminated structure with a nanostructured (NS) Cu-Zn alloy layer sandwiched between two coarse-grained (CG) pure Cu layers. The improved tensile ductility of NS layer is revealed and attributed to the constraint from the stable CG layers. It is found that the elastic/plastic interaction between NS and CG layers is capable of significantly improving the back stress, which makes a significant contribution to the synergetic strain hardening in low strain stage. Furthermore, a higher mechanical incompatibility permits stronger and longer mutual interaction between layers, i.e. coupling effect, which contributes to a higher back stress. These results improve our understanding about the role of back stress on mechanical behaviors of heterogeneous laminate materials.

AB - The effect of back stress on the mechanical behaviors of heterogeneous material is studied in two modeled heterogeneous laminates, i.e. laminated structure with a nanostructured (NS) Cu-Zn alloy layer sandwiched between two coarse-grained (CG) pure Cu layers. The improved tensile ductility of NS layer is revealed and attributed to the constraint from the stable CG layers. It is found that the elastic/plastic interaction between NS and CG layers is capable of significantly improving the back stress, which makes a significant contribution to the synergetic strain hardening in low strain stage. Furthermore, a higher mechanical incompatibility permits stronger and longer mutual interaction between layers, i.e. coupling effect, which contributes to a higher back stress. These results improve our understanding about the role of back stress on mechanical behaviors of heterogeneous laminate materials.

KW - Back stress

KW - Elastic/plastic interaction

KW - Laminate

KW - Nanostructure

KW - Strain hardening

UR - https://www.scopus.com/pages/publications/85046806681

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85046806681&origin=recordpage

U2 - 10.1016/j.msea.2018.04.107

DO - 10.1016/j.msea.2018.04.107

M3 - RGC 21 - Publication in refereed journal

SN - 0921-5093

VL - 727

SP - 113

EP - 118

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

ER -

Improved back stress and synergetic strain hardening in coarse-grain/nanostructure laminates

Abstract

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Research Keywords

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