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Title: Crystal plasticity modeling of β phase deformation in Ti-6Al-4V

Ti-6Al-4V is an alloy of titanium that dominates titanium usage in applications ranging from mass-produced consumer goods to high-end aerospace parts. The material's structure on a microscale is known to affect its mechanical properties but these effects are not fully understood. Specifically, this work will address the effects of low volume fraction intergranular β phase on Ti-6Al-4V's mechanical response during the transition from elastic to plastic deformation. A crystal plasticity-based finite element model is used to fully resolve the deformation of the β phase for the first time. This high fidelity model captures mechanisms difficult to access via experiments or lower fidelity models. Lastly, the results are used to assess lower fidelity modeling assumptions and identify phenomena that have ramifications for failure of the material.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-717740
Journal ID: ISSN 0965-0393
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Modelling and Simulation in Materials Science and Engineering
Additional Journal Information:
Journal Volume: 25; Journal Issue: 7; Journal ID: ISSN 0965-0393
Publisher:
IOP Publishing
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE
OSTI Identifier:
1438768

Moore, John A., Barton, Nathan R., Florando, Jeff, Mulay, Rupalee, and Kumar, Mukul. Crystal plasticity modeling of β phase deformation in Ti-6Al-4V. United States: N. p., Web. doi:10.1088/1361-651X/aa841c.
Moore, John A., Barton, Nathan R., Florando, Jeff, Mulay, Rupalee, & Kumar, Mukul. Crystal plasticity modeling of β phase deformation in Ti-6Al-4V. United States. doi:10.1088/1361-651X/aa841c.
Moore, John A., Barton, Nathan R., Florando, Jeff, Mulay, Rupalee, and Kumar, Mukul. 2017. "Crystal plasticity modeling of β phase deformation in Ti-6Al-4V". United States. doi:10.1088/1361-651X/aa841c. https://www.osti.gov/servlets/purl/1438768.
@article{osti_1438768,
title = {Crystal plasticity modeling of β phase deformation in Ti-6Al-4V},
author = {Moore, John A. and Barton, Nathan R. and Florando, Jeff and Mulay, Rupalee and Kumar, Mukul},
abstractNote = {Ti-6Al-4V is an alloy of titanium that dominates titanium usage in applications ranging from mass-produced consumer goods to high-end aerospace parts. The material's structure on a microscale is known to affect its mechanical properties but these effects are not fully understood. Specifically, this work will address the effects of low volume fraction intergranular β phase on Ti-6Al-4V's mechanical response during the transition from elastic to plastic deformation. A crystal plasticity-based finite element model is used to fully resolve the deformation of the β phase for the first time. This high fidelity model captures mechanisms difficult to access via experiments or lower fidelity models. Lastly, the results are used to assess lower fidelity modeling assumptions and identify phenomena that have ramifications for failure of the material.},
doi = {10.1088/1361-651X/aa841c},
journal = {Modelling and Simulation in Materials Science and Engineering},
number = 7,
volume = 25,
place = {United States},
year = {2017},
month = {8}
}