Anisotropic multiaxial plasticity model for laser powder bed fusion additively manufactured Ti-6Al-4V

Alexander E. Wilson-Heid; Shipin Qin; Allison M. Beese

doi:10.1016/j.msea.2018.09.077

Anisotropic multiaxial plasticity model for laser powder bed fusion additively manufactured Ti-6Al-4V

Alexander E. Wilson-Heid, Shipin Qin, Allison M. Beese

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

The multiaxial yield and plastic flow behavior of Ti-6Al-4V manufactured in two orientations via laser powder bed fusion (L-PBF) additive manufacturing was investigated. The mechanical properties of L-PBF Ti-6Al-4V were evaluated under uniaxial tension, plane strain tension, pure shear, and combined tension/shear loading. The mechanical behavior was found to be stress state dependent and slightly anisotropic. A plasticity model, consisting of a Hill 1948 anisotropic yield criterion, associated flow rule, and an isotropic hardening law was calibrated and used to describe the yield and plasticity behavior of this material. Validation of the plasticity model under multiaxial stress states demonstrated that the model was able to predict the stress state dependent anisotropic plasticity behavior of this material.

Original language	English (US)
Pages (from-to)	90-97
Number of pages	8
Journal	Materials Science and Engineering: A
Volume	738
DOIs	https://doi.org/10.1016/j.msea.2018.09.077
State	Published - Dec 19 2018

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2018.09.077

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title = "Anisotropic multiaxial plasticity model for laser powder bed fusion additively manufactured Ti-6Al-4V",

abstract = "The multiaxial yield and plastic flow behavior of Ti-6Al-4V manufactured in two orientations via laser powder bed fusion (L-PBF) additive manufacturing was investigated. The mechanical properties of L-PBF Ti-6Al-4V were evaluated under uniaxial tension, plane strain tension, pure shear, and combined tension/shear loading. The mechanical behavior was found to be stress state dependent and slightly anisotropic. A plasticity model, consisting of a Hill 1948 anisotropic yield criterion, associated flow rule, and an isotropic hardening law was calibrated and used to describe the yield and plasticity behavior of this material. Validation of the plasticity model under multiaxial stress states demonstrated that the model was able to predict the stress state dependent anisotropic plasticity behavior of this material.",

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doi = "10.1016/j.msea.2018.09.077",

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T1 - Anisotropic multiaxial plasticity model for laser powder bed fusion additively manufactured Ti-6Al-4V

AU - Wilson-Heid, Alexander E.

AU - Qin, Shipin

AU - Beese, Allison M.

PY - 2018/12/19

Y1 - 2018/12/19

N2 - The multiaxial yield and plastic flow behavior of Ti-6Al-4V manufactured in two orientations via laser powder bed fusion (L-PBF) additive manufacturing was investigated. The mechanical properties of L-PBF Ti-6Al-4V were evaluated under uniaxial tension, plane strain tension, pure shear, and combined tension/shear loading. The mechanical behavior was found to be stress state dependent and slightly anisotropic. A plasticity model, consisting of a Hill 1948 anisotropic yield criterion, associated flow rule, and an isotropic hardening law was calibrated and used to describe the yield and plasticity behavior of this material. Validation of the plasticity model under multiaxial stress states demonstrated that the model was able to predict the stress state dependent anisotropic plasticity behavior of this material.

AB - The multiaxial yield and plastic flow behavior of Ti-6Al-4V manufactured in two orientations via laser powder bed fusion (L-PBF) additive manufacturing was investigated. The mechanical properties of L-PBF Ti-6Al-4V were evaluated under uniaxial tension, plane strain tension, pure shear, and combined tension/shear loading. The mechanical behavior was found to be stress state dependent and slightly anisotropic. A plasticity model, consisting of a Hill 1948 anisotropic yield criterion, associated flow rule, and an isotropic hardening law was calibrated and used to describe the yield and plasticity behavior of this material. Validation of the plasticity model under multiaxial stress states demonstrated that the model was able to predict the stress state dependent anisotropic plasticity behavior of this material.

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Anisotropic multiaxial plasticity model for laser powder bed fusion additively manufactured Ti-6Al-4V

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