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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

Journal Article · · Acta Materialia
 [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)

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.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1366734
Journal Information:
Acta Materialia, Journal Name: Acta Materialia Journal Issue: C Vol. 120; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Macrodeformation twinning in a textured aluminum alloy via dynamic equal channel angular pressing journal November 2018
Understanding the High Strength and Good Ductility in LPSO-Containing Mg Alloy Using Synchrotron X-ray Diffraction journal August 2018
Capture Deformation Twinning in Mg during Shock Compression with Ultrafast Synchrotron X-Ray Diffraction journal December 2019
Deducing density and strength of nanocrystalline Ta and diamond under extreme conditions from X-ray diffraction journal January 2019

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