Texture induced planar anisotropy of dwell fatigue response in titanium: Insights from experiments and crystal plasticity simulations

K. U. Yazar; S. Mishra; L. Kumar; S. Bahl; T. Kiran Kumar; Satyam Suwas

doi:10.1016/j.ijplas.2021.103140

Texture induced planar anisotropy of dwell fatigue response in titanium: Insights from experiments and crystal plasticity simulations

K. U. Yazar, S. Mishra, L. Kumar, S. Bahl, T. Kiran Kumar, Satyam Suwas

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

25 Scopus citations

Abstract

This study elucidates the mechanism of texture induced planar anisotropy in ambient temperature (∼25 °C) dwell fatigue response of an annealed sheet of commercially pure titanium (cp-Ti). Dwell fatigue resistance on loading along rolling direction (RD) was observed to be markedly superior when compared to the loading along transverse direction (TD). Texture caused significant anisotropy in the strain hardening and strain rate sensitivity (SRS) which altered the dwell-fatigue response between RD and TD. RD direction had higher strain hardening and lower SRS both of which synergistically led to higher dwell-fatigue life compared to the TD direction. A combination of electron back scattered diffraction (EBSD) and Crystal Plasticity Fast Fourier Transform (CPFFT) simulations confirmed higher activity of prismatic slip in RD which led to higher strain hardening compared to TD. An analytical model was applied to deconvolute the contributions of strain hardening and SRS on dwell-fatigue life. The effect of strain hardening was observed to be higher when compared to that of SRS. The results of this work indicate that crystallographic texture is a remarkable tool to improve the dwell fatigue life of titanium.

Original language	English
Article number	103140
Journal	International Journal of Plasticity
Volume	152
DOIs	https://doi.org/10.1016/j.ijplas.2021.103140
State	Published - May 2022
Externally published	Yes

Funding

The authors would like to thank Prof. S.V. Kailas, Mech. Eng. Dept, IISc Bangalore, for providing the fatigue testing facility. Authors would also like to thank Mr. Rajneesh, Research Assistant, Mech. Eng. Dept., IISc Bangalore, for assistance in fatigue testing. The authors are grateful to MPIE, Germany for providing the DAMASK code. The authors would like to thank Drs. P. Eisenlohr (Michigan State University), A. K. Kanjarla (IITM) and Mr. Srihari Sundar (IIT Madras), Dr. R. K Khatirkar (VNIT, Nagpur) and Mr. M. Kumar (IIT Kanpur) for helping with the installation and usage of DAMASK. We are also thankful to the Aeronautics Research and Development Board (ARDB), India, for the financial support. The authors would like to thank Prof. S.V. Kailas, Mech. Eng. Dept, IISc Bangalore, for providing the fatigue testing facility. Authors would also like to thank Mr. Rajneesh, Research Assistant, Mech. Eng. Dept. IISc Bangalore, for assistance in fatigue testing. The authors are grateful to MPIE, Germany for providing the DAMASK code. The authors would like to thank Drs. P. Eisenlohr (Michigan State University), A. K. Kanjarla (IITM) and Mr. Srihari Sundar (IIT Madras), Dr. R. K Khatirkar (VNIT, Nagpur) and Mr. M. Kumar (IIT Kanpur) for helping with the installation and usage of DAMASK. We are also thankful to the Aeronautics Research and Development Board (ARDB), India, for the financial support.

Funders	Funder number
Aeronautics Research and Development Board
Michigan State University

Keywords

CPFFT
Crystallographic texture
Dwell fatigue
EBSD
Planar anisotropy

Access to Document

10.1016/j.ijplas.2021.103140

Cite this

@article{736330f1023249cfb1b23e681184b258,

title = "Texture induced planar anisotropy of dwell fatigue response in titanium: Insights from experiments and crystal plasticity simulations",

abstract = "This study elucidates the mechanism of texture induced planar anisotropy in ambient temperature (∼25 °C) dwell fatigue response of an annealed sheet of commercially pure titanium (cp-Ti). Dwell fatigue resistance on loading along rolling direction (RD) was observed to be markedly superior when compared to the loading along transverse direction (TD). Texture caused significant anisotropy in the strain hardening and strain rate sensitivity (SRS) which altered the dwell-fatigue response between RD and TD. RD direction had higher strain hardening and lower SRS both of which synergistically led to higher dwell-fatigue life compared to the TD direction. A combination of electron back scattered diffraction (EBSD) and Crystal Plasticity Fast Fourier Transform (CPFFT) simulations confirmed higher activity of prismatic slip in RD which led to higher strain hardening compared to TD. An analytical model was applied to deconvolute the contributions of strain hardening and SRS on dwell-fatigue life. The effect of strain hardening was observed to be higher when compared to that of SRS. The results of this work indicate that crystallographic texture is a remarkable tool to improve the dwell fatigue life of titanium.",

keywords = "CPFFT, Crystallographic texture, Dwell fatigue, EBSD, Planar anisotropy",

author = "Yazar, {K. U.} and S. Mishra and L. Kumar and S. Bahl and Kumar, {T. Kiran} and Satyam Suwas",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = may,

doi = "10.1016/j.ijplas.2021.103140",

language = "English",

volume = "152",

journal = "International Journal of Plasticity",

issn = "0749-6419",

publisher = "Elsevier",

}

TY - JOUR

T1 - Texture induced planar anisotropy of dwell fatigue response in titanium

T2 - Insights from experiments and crystal plasticity simulations

AU - Yazar, K. U.

AU - Mishra, S.

AU - Kumar, L.

AU - Bahl, S.

AU - Kumar, T. Kiran

AU - Suwas, Satyam

PY - 2022/5

Y1 - 2022/5

N2 - This study elucidates the mechanism of texture induced planar anisotropy in ambient temperature (∼25 °C) dwell fatigue response of an annealed sheet of commercially pure titanium (cp-Ti). Dwell fatigue resistance on loading along rolling direction (RD) was observed to be markedly superior when compared to the loading along transverse direction (TD). Texture caused significant anisotropy in the strain hardening and strain rate sensitivity (SRS) which altered the dwell-fatigue response between RD and TD. RD direction had higher strain hardening and lower SRS both of which synergistically led to higher dwell-fatigue life compared to the TD direction. A combination of electron back scattered diffraction (EBSD) and Crystal Plasticity Fast Fourier Transform (CPFFT) simulations confirmed higher activity of prismatic slip in RD which led to higher strain hardening compared to TD. An analytical model was applied to deconvolute the contributions of strain hardening and SRS on dwell-fatigue life. The effect of strain hardening was observed to be higher when compared to that of SRS. The results of this work indicate that crystallographic texture is a remarkable tool to improve the dwell fatigue life of titanium.

AB - This study elucidates the mechanism of texture induced planar anisotropy in ambient temperature (∼25 °C) dwell fatigue response of an annealed sheet of commercially pure titanium (cp-Ti). Dwell fatigue resistance on loading along rolling direction (RD) was observed to be markedly superior when compared to the loading along transverse direction (TD). Texture caused significant anisotropy in the strain hardening and strain rate sensitivity (SRS) which altered the dwell-fatigue response between RD and TD. RD direction had higher strain hardening and lower SRS both of which synergistically led to higher dwell-fatigue life compared to the TD direction. A combination of electron back scattered diffraction (EBSD) and Crystal Plasticity Fast Fourier Transform (CPFFT) simulations confirmed higher activity of prismatic slip in RD which led to higher strain hardening compared to TD. An analytical model was applied to deconvolute the contributions of strain hardening and SRS on dwell-fatigue life. The effect of strain hardening was observed to be higher when compared to that of SRS. The results of this work indicate that crystallographic texture is a remarkable tool to improve the dwell fatigue life of titanium.

KW - CPFFT

KW - Crystallographic texture

KW - Dwell fatigue

KW - EBSD

KW - Planar anisotropy

UR - http://www.scopus.com/inward/record.url?scp=85123770505&partnerID=8YFLogxK

U2 - 10.1016/j.ijplas.2021.103140

DO - 10.1016/j.ijplas.2021.103140

M3 - Article

AN - SCOPUS:85123770505

SN - 0749-6419

VL - 152

JO - International Journal of Plasticity

JF - International Journal of Plasticity

M1 - 103140

ER -

Texture induced planar anisotropy of dwell fatigue response in titanium: Insights from experiments and crystal plasticity simulations

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this