Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium
Plastic anisotropy is an important issue for metals possessing a hexagonal close-packed structure. This study investigated the anisotropic deformation characteristics of commercially pure titanium with basal texture. A quasi-static uniaxial compression gave rise to clear differences in flow curves a...
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doaj-1d12fb943427463ca3ac366256d7ab7f2020-11-25T04:07:03ZengMDPI AGApplied Sciences2076-34172020-11-01107962796210.3390/app10227962Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure TitaniumDaehwan Kim0Taekyung Lee1Chong Soo Lee2Technical Research Laboratories, POSCO, Pohang 37877, KoreaSchool of Mechanical Engineering, Pusan National University, Busan 46241, KoreaGraduate Institute of Ferrous Technology (GIFT), Pohang University of Science and Technology (POSTECH), Pohang 37673, KoreaPlastic anisotropy is an important issue for metals possessing a hexagonal close-packed structure. This study investigated the anisotropic deformation characteristics of commercially pure titanium with basal texture. A quasi-static uniaxial compression gave rise to clear differences in flow curves and strain-hardening rates depending on the loading direction. This study employed a constitutive approach to quantify the contribution of (i) dynamic Hall–Petch strengthening, (ii) dislocation pile-up, and (iii) texture hardening with respect to the total flow stress. Such an approach calculated a flow stress comparable to the measured value, providing logical validity. The microstructural and mechanical differences depending on the loading direction (i.e., anisotropy) were successfully interpreted based on this approach.https://www.mdpi.com/2076-3417/10/22/7962titaniumplastic anisotropyflow curveconstitutive analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Daehwan Kim Taekyung Lee Chong Soo Lee |
spellingShingle |
Daehwan Kim Taekyung Lee Chong Soo Lee Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium Applied Sciences titanium plastic anisotropy flow curve constitutive analysis |
author_facet |
Daehwan Kim Taekyung Lee Chong Soo Lee |
author_sort |
Daehwan Kim |
title |
Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium |
title_short |
Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium |
title_full |
Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium |
title_fullStr |
Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium |
title_full_unstemmed |
Constitutive Analysis of the Anisotropic Flow Behavior of Commercially Pure Titanium |
title_sort |
constitutive analysis of the anisotropic flow behavior of commercially pure titanium |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-11-01 |
description |
Plastic anisotropy is an important issue for metals possessing a hexagonal close-packed structure. This study investigated the anisotropic deformation characteristics of commercially pure titanium with basal texture. A quasi-static uniaxial compression gave rise to clear differences in flow curves and strain-hardening rates depending on the loading direction. This study employed a constitutive approach to quantify the contribution of (i) dynamic Hall–Petch strengthening, (ii) dislocation pile-up, and (iii) texture hardening with respect to the total flow stress. Such an approach calculated a flow stress comparable to the measured value, providing logical validity. The microstructural and mechanical differences depending on the loading direction (i.e., anisotropy) were successfully interpreted based on this approach. |
topic |
titanium plastic anisotropy flow curve constitutive analysis |
url |
https://www.mdpi.com/2076-3417/10/22/7962 |
work_keys_str_mv |
AT daehwankim constitutiveanalysisoftheanisotropicflowbehaviorofcommerciallypuretitanium AT taekyunglee constitutiveanalysisoftheanisotropicflowbehaviorofcommerciallypuretitanium AT chongsoolee constitutiveanalysisoftheanisotropicflowbehaviorofcommerciallypuretitanium |
_version_ |
1724429731591356416 |