DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Improved twin detection via tracking of individual Kikuchi band intensity of EBSD patterns

Abstract

Twin detection via EBSD can be particularly challenging due to the fine scale of certain twin types – for example, compression and double twins in Mg. Even when a grid of sufficient resolution is chosen to ensure scan points within the twins, the interaction volume of the electron beam often encapsulates a region that contains both the parent grain and the twin, confusing the twin identification process. The degradation of the EBSD pattern results in a lower image quality metric, which has long been used to imply potential twins. However, not all bands within the pattern are degraded equally. This paper exploits the fact that parent and twin lattices share common planes that lead to the quality of the associated bands not degrading; i.e. common planes that exist in both grains lead to bands of consistent intensity for scan points adjacent to twin boundaries. Hence, twin boundaries in a microstructure can be recognized, even when they are associated with thin twins. Proof of concept was performed on known twins in Inconel 600, Tantalum, and Magnesium AZ31. This method was then used to search for undetected twins in a Mg AZ31 structure, revealing nearly double the number of twins compared withmore » those initially detected by standard procedures.« less

Authors:
 [1];  [2];  [1];  [1];  [3];  [1]
  1. Brigham Young Univ., Provo, UT (United States)
  2. EDAX Inc., Draper, UT (United States)
  3. The Ohio State Univ., Columbus, OH (United States)
Publication Date:
Research Org.:
Brigham Young Univ., Provo, UT (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1538888
Alternate Identifier(s):
OSTI ID: 1549063
Grant/Contract Number:  
SC0012587; -SC0012587; 1404771
Resource Type:
Accepted Manuscript
Journal Name:
Ultramicroscopy
Additional Journal Information:
Journal Volume: 185; Journal Issue: C; Journal ID: ISSN 0304-3991
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Microscopy; EBSD; Twin; Kikuchi band

Citation Formats

Rampton, Travis M., Wright, Stuart I., Miles, Michael P., Homer, Eric R., Wagoner, Robert H., and Fullwood, David T. Improved twin detection via tracking of individual Kikuchi band intensity of EBSD patterns. United States: N. p., 2017. Web. doi:10.1016/j.ultramic.2017.11.003.
Rampton, Travis M., Wright, Stuart I., Miles, Michael P., Homer, Eric R., Wagoner, Robert H., & Fullwood, David T. Improved twin detection via tracking of individual Kikuchi band intensity of EBSD patterns. United States. https://doi.org/10.1016/j.ultramic.2017.11.003
Rampton, Travis M., Wright, Stuart I., Miles, Michael P., Homer, Eric R., Wagoner, Robert H., and Fullwood, David T. Fri . "Improved twin detection via tracking of individual Kikuchi band intensity of EBSD patterns". United States. https://doi.org/10.1016/j.ultramic.2017.11.003. https://www.osti.gov/servlets/purl/1538888.
@article{osti_1538888,
title = {Improved twin detection via tracking of individual Kikuchi band intensity of EBSD patterns},
author = {Rampton, Travis M. and Wright, Stuart I. and Miles, Michael P. and Homer, Eric R. and Wagoner, Robert H. and Fullwood, David T.},
abstractNote = {Twin detection via EBSD can be particularly challenging due to the fine scale of certain twin types – for example, compression and double twins in Mg. Even when a grid of sufficient resolution is chosen to ensure scan points within the twins, the interaction volume of the electron beam often encapsulates a region that contains both the parent grain and the twin, confusing the twin identification process. The degradation of the EBSD pattern results in a lower image quality metric, which has long been used to imply potential twins. However, not all bands within the pattern are degraded equally. This paper exploits the fact that parent and twin lattices share common planes that lead to the quality of the associated bands not degrading; i.e. common planes that exist in both grains lead to bands of consistent intensity for scan points adjacent to twin boundaries. Hence, twin boundaries in a microstructure can be recognized, even when they are associated with thin twins. Proof of concept was performed on known twins in Inconel 600, Tantalum, and Magnesium AZ31. This method was then used to search for undetected twins in a Mg AZ31 structure, revealing nearly double the number of twins compared with those initially detected by standard procedures.},
doi = {10.1016/j.ultramic.2017.11.003},
journal = {Ultramicroscopy},
number = C,
volume = 185,
place = {United States},
year = {2017},
month = {11}
}

Journal Article:

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Twinning and the ductility of magnesium alloys
journal, August 2007


Room Temperature Shear Band Development in Highly Twinned Wrought Magnesium AZ31B Sheet
journal, September 2012

  • Scott, Jon; Miles, Michael; Fullwood, David
  • Metallurgical and Materials Transactions A, Vol. 44, Issue 1
  • DOI: 10.1007/s11661-012-1405-0

Microstructure evolution under compressive plastic deformation of magnesium at different temperatures and strain rates
journal, February 2002


The effect of pattern overlap on the accuracy of high resolution electron backscatter diffraction measurements
journal, August 2015


Exploring Spatial Resolution in Electron Back-Scattered Diffraction Experiments via Monte Carlo Simulation
journal, February 1998


Effect of microstructure on the nucleation of deformation twins in polycrystalline high-purity magnesium: A multi-scale modeling study
journal, May 2011

  • Beyerlein, I. J.; McCabe, R. J.; Tomé, C. N.
  • Journal of the Mechanics and Physics of Solids, Vol. 59, Issue 5
  • DOI: 10.1016/j.jmps.2011.02.007

Automated Lattice Orientation Determination From Electron Backscatter Kikuchi Diffraction Patterns
journal, January 1991


Twinning in magnesium alloy AZ31B under different strain paths at moderately elevated temperatures
journal, June 2013


Twinning and the ductility of magnesium alloys
journal, August 2007


On the formation mechanisms, spatial resolution and intensity of backscatter Kikuchi patterns
journal, February 2007


Effect of microscopic parameters on EBSD spatial resolution
journal, August 2011


Towards ultrahigh resolution EBSD by low accelerating voltage
journal, June 2010


Factors affecting the accuracy of high resolution electron backscatter diffraction when using simulated patterns
journal, November 2010


Electron backscatter diffraction of grain and subgrain structures - resolution considerations
journal, September 1999


Orientation imaging: The emergence of a new microscopy
journal, April 1993

  • Adams, Brent L.; Wright, Stuart I.; Kunze, Karsten
  • Metallurgical Transactions A, Vol. 24, Issue 4
  • DOI: 10.1007/BF02656503

Five-Parameter Grain Boundary Inclination Recovery with EBSD and Interaction Volume Models
journal, June 2014

  • Sorensen, Caroline; Basinger, John A.; Nowell, Matthew M.
  • Metallurgical and Materials Transactions A, Vol. 45, Issue 9
  • DOI: 10.1007/s11661-014-2345-7

Advances in Automatic EBSP Single Orientation Measurements
journal, January 1993

  • Kunze, K.; Wright, S. I.; Adams, B. L.
  • Textures and Microstructures, Vol. 20, Issue 1-4
  • DOI: 10.1155/TSM.20.41

Extracting twins from orientation imaging microscopy scan data
journal, March 2002


Application of edge detection method based on image quality gradient for twin detection
journal, October 2009


Dynamical Electron Backscatter Diffraction Patterns. Part I: Pattern Simulations
journal, June 2013


Some Ideas on the Formation Mechanisms and Intensity Distribution of Backscatter Kikuchi Patterns
journal, August 2007


Transmission Electron Diffraction From Nanoparticles, Nanowires and Thin Films in an SEM With Conventional EBSD Equipment
journal, July 2010


Monte Carlo Simulation for Electron Backscattering Diffraction
journal, August 2004


EBSD Image Quality Mapping
journal, December 2005