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Title: Deformation behavior of CP-titanium under strain path changes: Experiment and crystal plasticity modeling

Abstract

The deformation behavior of commercially pure rolled titanium subjected to strain path changes is studied using experiments and a crystal plasticity model. Four different loading combinations are performed at room temperature to study the activation of slip, twinning, de-twinning and double-twinning in hexagonal closed packed titanium. The strain paths considered are: rolling direction compression (RDC) followed by normal direction compression (NDC), RDC followed by transverse direction compression (TDC), NDC followed by RDC, and NDC followed by TDC. An EBSD-based analysis of the distribution of boundary misorientation angles before and after reload was developed to analyze the evolution of {$$10\bar{1}2$$} tensile and {$$11\bar{2}2$$} compression twins. This analysis supports the model results concerning the treatment of twin reorientation. A de-twinning and double-twinning model accounting for back stress effects, an important feature of strain path changes, is implemented within the framework of the visco-plastic self-consistent (VPSC) model along with a dislocation density (DD) based hardening scheme. In the model, plasticity is accommodated by prismatic $$\langle$$a$$\rangle$$, basal $$\langle$$a$$\rangle$$ and pyramidal $$\langle$$c+a$$\rangle$$ slip modes, and {$$10\bar{1}2$$} tensile and {$$11\bar{2}2$$} compression twinning modes. The VPSC model predicts the evolution of twinning, de-twinning and double-twinning processes for both tensile and compression twinning modes under strain path change. The model predicts macroscopic stress-strain response, texture evolution, and twin volume fraction that are in agreement with experimental observations. The evolution of texture is investigated in detail by separately analyzing the twinned domains, rather than the evolution of the global texture.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2];  [1]; ORCiD logo [2]
  1. AGH - Univ. of Science and Technology, Krakow (Poland)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Office of Basic Energy Sciences (BES) (SC-32); Polish National Science Centre (NCN)
OSTI Identifier:
1835809
Report Number(s):
LA-UR-21-30280
Journal ID: ISSN 0749-6419
Grant/Contract Number:  
89233218CNA000001; FWP-06SCPE401; UMO-2015/19/D/ST8/00818
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Plasticity
Additional Journal Information:
Journal Volume: 148; Journal ID: ISSN 0749-6419
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Crystal plasticity; Strain path changes; Titanium; Dislocation density; Twinning; De-twinning; Double-twinning

Citation Formats

Wronski, M., Kumar, Mariyappan Arul, McCabe, Rodney James, Wierzbanowski, K., and Tome, Carlos N. Deformation behavior of CP-titanium under strain path changes: Experiment and crystal plasticity modeling. United States: N. p., 2021. Web. doi:10.1016/j.ijplas.2021.103129.
Wronski, M., Kumar, Mariyappan Arul, McCabe, Rodney James, Wierzbanowski, K., & Tome, Carlos N. Deformation behavior of CP-titanium under strain path changes: Experiment and crystal plasticity modeling. United States. https://doi.org/10.1016/j.ijplas.2021.103129
Wronski, M., Kumar, Mariyappan Arul, McCabe, Rodney James, Wierzbanowski, K., and Tome, Carlos N. Sun . "Deformation behavior of CP-titanium under strain path changes: Experiment and crystal plasticity modeling". United States. https://doi.org/10.1016/j.ijplas.2021.103129. https://www.osti.gov/servlets/purl/1835809.
@article{osti_1835809,
title = {Deformation behavior of CP-titanium under strain path changes: Experiment and crystal plasticity modeling},
author = {Wronski, M. and Kumar, Mariyappan Arul and McCabe, Rodney James and Wierzbanowski, K. and Tome, Carlos N.},
abstractNote = {The deformation behavior of commercially pure rolled titanium subjected to strain path changes is studied using experiments and a crystal plasticity model. Four different loading combinations are performed at room temperature to study the activation of slip, twinning, de-twinning and double-twinning in hexagonal closed packed titanium. The strain paths considered are: rolling direction compression (RDC) followed by normal direction compression (NDC), RDC followed by transverse direction compression (TDC), NDC followed by RDC, and NDC followed by TDC. An EBSD-based analysis of the distribution of boundary misorientation angles before and after reload was developed to analyze the evolution of {$10\bar{1}2$} tensile and {$11\bar{2}2$} compression twins. This analysis supports the model results concerning the treatment of twin reorientation. A de-twinning and double-twinning model accounting for back stress effects, an important feature of strain path changes, is implemented within the framework of the visco-plastic self-consistent (VPSC) model along with a dislocation density (DD) based hardening scheme. In the model, plasticity is accommodated by prismatic $\langle$a$\rangle$, basal $\langle$a$\rangle$ and pyramidal $\langle$c+a$\rangle$ slip modes, and {$10\bar{1}2$} tensile and {$11\bar{2}2$} compression twinning modes. The VPSC model predicts the evolution of twinning, de-twinning and double-twinning processes for both tensile and compression twinning modes under strain path change. The model predicts macroscopic stress-strain response, texture evolution, and twin volume fraction that are in agreement with experimental observations. The evolution of texture is investigated in detail by separately analyzing the twinned domains, rather than the evolution of the global texture.},
doi = {10.1016/j.ijplas.2021.103129},
journal = {International Journal of Plasticity},
number = ,
volume = 148,
place = {United States},
year = {Sun Oct 10 00:00:00 EDT 2021},
month = {Sun Oct 10 00:00:00 EDT 2021}
}

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