The ability to measure small deformations or strains is useful for understanding many aspects of materials. Here, a new analysis speckle diffraction peaks presented in which the systematic shifts speckles are analyzed allowing strain (or flow) patterns be inferred. This tracking technique measures with accuracy similar x-ray single crystal measurements but amorphous highly disordered

Using insitu digital image correlation to obtain full-field measurements, we study the intermartensitic transformations in single crystal NiFeGa. Full-field strain measurements identify the coexistence of modulated martensite phases during the first plateau of the multistage stress-strain curve at room temperature. At a higher temperature, the measurements indicate the bypassing of one of the m...

We identify the role of deformation twinning and twin–twin intersections on the strain hardening behavior of Hadfield steel single crystals using strain field measurements. In situ and ex situ strain field measurements resolved at micrometer length scales are obtained using digital image correlation. Ex situ measurements reveal that macroscopic twin-bands, which are composed of a mixture of fin...