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Title: Role of microstructure on twin nucleation and growth in HCP titanium: A statistical study

In this study, a detailed statistical analysis is performed using Electron Back Scatter Diffraction (EBSD) to establish the effect of microstructure on twin nucleation and growth in deformed commercial purity hexagonal close packed (HCP) titanium. Rolled titanium samples are compressed along rolling, transverse and normal directions to establish statistical correlations for {10–12}, {11–21}, and {11–22} twins. A recently developed automated EBSD-twinning analysis software is employed for the statistical analysis. Finally, the analysis provides the following key findings: (I) grain size and strain dependence is different for twin nucleation and growth; (II) twinning statistics can be generalized for the HCP metals magnesium, zirconium and titanium; and (III) complex microstructure, where grain shape and size distribution is heterogeneous, requires multi-point statistical correlations.
Authors:
ORCiD logo [1] ;  [2] ; ORCiD logo [1] ; ORCiD logo [1] ;  [2] ;  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. AGH University of Science and Technology (Poland)
Publication Date:
Report Number(s):
LA-UR-17-29637
Journal ID: ISSN 1359-6454
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 148; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Grain size Schmid factor Heterogeneous microstructure Twinning evolution
OSTI Identifier:
1427380

Arul Kumar, M., Wroński, M., McCabe, Rodney James, Capolungo, Laurent, Wierzbanowski, K., and Tomé, Carlos N.. Role of microstructure on twin nucleation and growth in HCP titanium: A statistical study. United States: N. p., Web. doi:10.1016/j.actamat.2018.01.041.
Arul Kumar, M., Wroński, M., McCabe, Rodney James, Capolungo, Laurent, Wierzbanowski, K., & Tomé, Carlos N.. Role of microstructure on twin nucleation and growth in HCP titanium: A statistical study. United States. doi:10.1016/j.actamat.2018.01.041.
Arul Kumar, M., Wroński, M., McCabe, Rodney James, Capolungo, Laurent, Wierzbanowski, K., and Tomé, Carlos N.. 2018. "Role of microstructure on twin nucleation and growth in HCP titanium: A statistical study". United States. doi:10.1016/j.actamat.2018.01.041.
@article{osti_1427380,
title = {Role of microstructure on twin nucleation and growth in HCP titanium: A statistical study},
author = {Arul Kumar, M. and Wroński, M. and McCabe, Rodney James and Capolungo, Laurent and Wierzbanowski, K. and Tomé, Carlos N.},
abstractNote = {In this study, a detailed statistical analysis is performed using Electron Back Scatter Diffraction (EBSD) to establish the effect of microstructure on twin nucleation and growth in deformed commercial purity hexagonal close packed (HCP) titanium. Rolled titanium samples are compressed along rolling, transverse and normal directions to establish statistical correlations for {10–12}, {11–21}, and {11–22} twins. A recently developed automated EBSD-twinning analysis software is employed for the statistical analysis. Finally, the analysis provides the following key findings: (I) grain size and strain dependence is different for twin nucleation and growth; (II) twinning statistics can be generalized for the HCP metals magnesium, zirconium and titanium; and (III) complex microstructure, where grain shape and size distribution is heterogeneous, requires multi-point statistical correlations.},
doi = {10.1016/j.actamat.2018.01.041},
journal = {Acta Materialia},
number = C,
volume = 148,
place = {United States},
year = {2018},
month = {2}
}