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

Arul Kumar, M.; Wroński, M.; McCabe, Rodney James; Capolungo, Laurent; Wierzbanowski, K.; Tomé, Carlos N.

doi:10.1016/j.actamat.2018.01.041

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

Journal Article · Thu Feb 01 00:00:00 EST 2018 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2018.01.041· OSTI ID:1427380

^[1]; Wroński, M. ^[2]; ^[1]; ^[1]; Wierzbanowski, K. ^[2]; Tomé, Carlos N. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
AGH University of Science and Technology (Poland)

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.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1427380

Alternate ID(s):: OSTI ID: 1548768
OSTI ID: 22744491

Report Number(s):: LA-UR-17-29637

Journal Information:: Acta Materialia, Journal Name: Acta Materialia Journal Issue: C Vol. 148; ISSN 1359-6454

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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