JOM

, Volume 65, Issue 1, pp 21–28 | Cite as

Microscopic Deformation in Individual Grains in an Advanced High-Strength Steel

  • Zhenzhen Yu
  • Rozaliya Barabash
  • Oleg Barabash
  • Wenjun Liu
  • Zhili Feng
Article

Abstract

In situ synchrotron microbeam x-ray diffraction experiments were carried out to study the microscopic deformation within individual ferrite grains in a martensite/ferrite dual-phase steel (DP980) under incremental tensile loading. The differential aperture x-ray microscopy technique was used to resolve the strain variations as a function of depth up to 100 μm deep from the sample surface. The highly inhomogeneous distributions of the lattice strain, which is associated with the elastic deformation and stresses inside the grains, were determined by means of monochromatic energy diffraction, whereas insights to the plastic deformation were revealed by polychromatic energy diffraction.

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Copyright information

© TMS 2012

Authors and Affiliations

  • Zhenzhen Yu
    • 1
  • Rozaliya Barabash
    • 1
  • Oleg Barabash
    • 2
  • Wenjun Liu
    • 3
  • Zhili Feng
    • 1
  1. 1.Materials Science and Technology DivisionOak Ridge National LaboratoryOak RidgeUSA
  2. 2.University of TennesseeKnoxvilleUSA
  3. 3.Advanced Photon SourceArgonne National LaboratoryArgonneUSA

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