The τ-plot, a multicomponent 1-D pole figure plot, to quantify the heterogeneity of plastic deformation

• An approach is presented that allows multi-scale characterisations of heterogeneous deformation in crystalline materials by employing a range of characterisation techniques including: electron backscatter diffraction, digital image correlation and neutron diffraction powder measurements. The approach will be used to obtain critical information about the variations in parameters that characterise the deformed state in different crystallographic orientation texture components of a sample in a statistically significant way. These parameters include lattice strains, texture evolution, peak broadening, dislocation density, planar faults, phase changes and surface strain. This approach allows verification of models of plastic deformation to provide a more detailed view of plastic deformation heterogeneity at multiple length scales than obtained by other characterisation approaches. The approach demonstrated here is applied to two stainless steel alloys; an alloy that exhibits phase transformation during deformation and an alloy that remains the same phase all through deformation process.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Nyckelord

Diffraction peak profile analysis

Digital image correlation

Electron backscatter diffraction

Neutron diffraction

Planar faults

TRIP steel

Backscattering

Crystallites

Electron diffraction

High strength steel

Image analysis

Plastic deformation

Strain

Strain measurement

Textures

Transformation Induced Plasticity steel

Crystallographic orientations

Deformation heterogeneities

Diffraction peaks

Digital image correlations

Dislocation densities

Electron back scatter diffraction

Heterogeneous deformation

Planar fault

Alloy steel

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)