A novel constitutive model for Ti–6Al–4V alloy based on dislocation pile-up theory

Tianfeng Zhou; Junjie Wu; Zhiqiang Liang; Jiangtao Che; Yichuan Zhang; Xibin Wang

doi:10.1080/02670836.2017.1295512

A novel constitutive model for Ti–6Al–4V alloy based on dislocation pile-up theory

Tianfeng Zhou, Junjie Wu, Zhiqiang Liang^*, Jiangtao Che, Yichuan Zhang, Xibin Wang

^*此作品的通讯作者

机械与车辆学院

Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

15 引用（Scopus）

摘要

The mechanical properties of the titanium alloy Ti–6Al–4V, which vary with the specimen size under different temperatures, are studied through the Split Hopkinson Pressure Bar (SHPB) test and the quasi-static tensile test to determine the parameters for the classical Johnson-Cook (JC) constitutive model. Based on the dislocation pile-up theory, the classical JC constitutive model is modified by adding a grain strain term Δσ to consider the influence of grain size. The SHPB and tensile tests are analysed using a finite element method simulation. Compared with the experimental results, the simulation results based on the modified JC model exhibit a much higher calculation accuracy than that of the classical JC model.

源语言	英语
页（从-至）	1379-1387
页数	9
期刊	Materials Science and Technology
卷	33
期	11
DOI	https://doi.org/10.1080/02670836.2017.1295512
出版状态	已出版 - 24 7月 2017

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Zhou, T., Wu, J., Liang, Z., Che, J., Zhang, Y., & Wang, X. (2017). A novel constitutive model for Ti–6Al–4V alloy based on dislocation pile-up theory. Materials Science and Technology, 33(11), 1379-1387. https://doi.org/10.1080/02670836.2017.1295512

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title = "A novel constitutive model for Ti–6Al–4V alloy based on dislocation pile-up theory",

abstract = "The mechanical properties of the titanium alloy Ti–6Al–4V, which vary with the specimen size under different temperatures, are studied through the Split Hopkinson Pressure Bar (SHPB) test and the quasi-static tensile test to determine the parameters for the classical Johnson-Cook (JC) constitutive model. Based on the dislocation pile-up theory, the classical JC constitutive model is modified by adding a grain strain term Δσ to consider the influence of grain size. The SHPB and tensile tests are analysed using a finite element method simulation. Compared with the experimental results, the simulation results based on the modified JC model exhibit a much higher calculation accuracy than that of the classical JC model.",

keywords = "FEM simulation, SHPB test, Titanium alloy, constitutive model, dislocation pile-up, tensile test",

author = "Tianfeng Zhou and Junjie Wu and Zhiqiang Liang and Jiangtao Che and Yichuan Zhang and Xibin Wang",

note = "Publisher Copyright: {\textcopyright} 2017 Institute of Materials, Minerals and Mining.",

year = "2017",

month = jul,

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doi = "10.1080/02670836.2017.1295512",

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T1 - A novel constitutive model for Ti–6Al–4V alloy based on dislocation pile-up theory

AU - Zhou, Tianfeng

AU - Wu, Junjie

AU - Liang, Zhiqiang

AU - Che, Jiangtao

AU - Zhang, Yichuan

AU - Wang, Xibin

PY - 2017/7/24

Y1 - 2017/7/24

N2 - The mechanical properties of the titanium alloy Ti–6Al–4V, which vary with the specimen size under different temperatures, are studied through the Split Hopkinson Pressure Bar (SHPB) test and the quasi-static tensile test to determine the parameters for the classical Johnson-Cook (JC) constitutive model. Based on the dislocation pile-up theory, the classical JC constitutive model is modified by adding a grain strain term Δσ to consider the influence of grain size. The SHPB and tensile tests are analysed using a finite element method simulation. Compared with the experimental results, the simulation results based on the modified JC model exhibit a much higher calculation accuracy than that of the classical JC model.

AB - The mechanical properties of the titanium alloy Ti–6Al–4V, which vary with the specimen size under different temperatures, are studied through the Split Hopkinson Pressure Bar (SHPB) test and the quasi-static tensile test to determine the parameters for the classical Johnson-Cook (JC) constitutive model. Based on the dislocation pile-up theory, the classical JC constitutive model is modified by adding a grain strain term Δσ to consider the influence of grain size. The SHPB and tensile tests are analysed using a finite element method simulation. Compared with the experimental results, the simulation results based on the modified JC model exhibit a much higher calculation accuracy than that of the classical JC model.

KW - FEM simulation

KW - SHPB test

KW - Titanium alloy

KW - constitutive model

KW - dislocation pile-up

KW - tensile test

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DO - 10.1080/02670836.2017.1295512

M3 - Article

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JO - Materials Science and Technology

JF - Materials Science and Technology

IS - 11

ER -

A novel constitutive model for Ti–6Al–4V alloy based on dislocation pile-up theory

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