Microscopic Deformation in Individual Grains in an Advanced High-Strength Steel
作者： Zhenzhen Yu , Rozaliya Barabash , Oleg Barabash , Wenjun Liu , Zhili Feng
DOI: 10.1007/S11837-012-0494-Y
关键词: Microbeam 、 Crystallography 、 Diffraction 、 Composite material 、 Martensite 、 Synchrotron 、 Deformation (engineering) 、 Microscopy 、 Materials science 、 Ferrite (iron) 、 Ultimate tensile strength
摘要: 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 microscopy technique was used resolve strain variations as function of depth up 100 μm deep from sample surface. highly inhomogeneous distributions lattice strain, which is associated with elastic and stresses inside grains, determined by means monochromatic energy diffraction, whereas insights plastic revealed polychromatic diffraction.
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