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Title: Anisotropic deformation of extruded magnesium alloy AZ31 under uniaxial compression: A study with simultaneous in situ synchrotron x-ray imaging and diffraction

In situ synchrotron x-ray imaging and diffraction are used to investigate anisotropic deformation of an extruded magnesium alloy AZ31 under uniaxial compression along two different directions, with the loading axis (LA) either parallel or perpendicular to the extrusion direction (ED), referred to as LA∥ED and LAED, respectively. Multiscale measurements including stress–strain curves (macroscale), x-ray digital image correlation (mesoscale), and diffraction (microscale) are obtained simultaneously. Electron backscatter diffraction is performed on samples collected at various strains to characterize deformation twins. The rapid increase in strain hardening rate for the LA∥ED loading is attributed to marked {101¯2} extension twinning and subsequent homogenization of deformation, while dislocation motion leads to inhomogeneous deformation and a decrease in strain hardening rate.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4] ;  [5]
  1. Univ. of Science and Technology of China, Anhui (People's Republic of China); Southwest Jiaotong Univ., Sichuan (People's Republic of China); The Peac Institute of Multiscale Sciences, Sichuan (People's Republic of China)
  2. The Peac Institute of Multiscale Sciences, Sichuan (People's Republic of China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Univ. of Science and Technology of China, Anhui (People's Republic of China)
  5. Southwest Jiaotong Univ., Sichuan (People's Republic of China); The Peac Institute of Multiscale Sciences, Sichuan (People's Republic of China)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 120; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NNSFC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; X-ray digital image correlation; dislocation; magnesium alloys; twinning; XRD
OSTI Identifier:
1366734
Alternate Identifier(s):
OSTI ID: 1397735

Lu, L., Huang, J. W., Fan, D., Bie, B. X., Sun, T., Fezzaa, K., Gong, X. L., and Luo, S. N.. Anisotropic deformation of extruded magnesium alloy AZ31 under uniaxial compression: A study with simultaneous in situ synchrotron x-ray imaging and diffraction. United States: N. p., Web. doi:10.1016/j.actamat.2016.08.029.
Lu, L., Huang, J. W., Fan, D., Bie, B. X., Sun, T., Fezzaa, K., Gong, X. L., & Luo, S. N.. Anisotropic deformation of extruded magnesium alloy AZ31 under uniaxial compression: A study with simultaneous in situ synchrotron x-ray imaging and diffraction. United States. doi:10.1016/j.actamat.2016.08.029.
Lu, L., Huang, J. W., Fan, D., Bie, B. X., Sun, T., Fezzaa, K., Gong, X. L., and Luo, S. N.. 2016. "Anisotropic deformation of extruded magnesium alloy AZ31 under uniaxial compression: A study with simultaneous in situ synchrotron x-ray imaging and diffraction". United States. doi:10.1016/j.actamat.2016.08.029. https://www.osti.gov/servlets/purl/1366734.
@article{osti_1366734,
title = {Anisotropic deformation of extruded magnesium alloy AZ31 under uniaxial compression: A study with simultaneous in situ synchrotron x-ray imaging and diffraction},
author = {Lu, L. and Huang, J. W. and Fan, D. and Bie, B. X. and Sun, T. and Fezzaa, K. and Gong, X. L. and Luo, S. N.},
abstractNote = {In situ synchrotron x-ray imaging and diffraction are used to investigate anisotropic deformation of an extruded magnesium alloy AZ31 under uniaxial compression along two different directions, with the loading axis (LA) either parallel or perpendicular to the extrusion direction (ED), referred to as LA∥ED and LAED, respectively. Multiscale measurements including stress–strain curves (macroscale), x-ray digital image correlation (mesoscale), and diffraction (microscale) are obtained simultaneously. Electron backscatter diffraction is performed on samples collected at various strains to characterize deformation twins. The rapid increase in strain hardening rate for the LA∥ED loading is attributed to marked {101¯2} extension twinning and subsequent homogenization of deformation, while dislocation motion leads to inhomogeneous deformation and a decrease in strain hardening rate.},
doi = {10.1016/j.actamat.2016.08.029},
journal = {Acta Materialia},
number = C,
volume = 120,
place = {United States},
year = {2016},
month = {8}
}