Strain localization behavior in low-carbon martensitic steel during tensile deformation

The microscopic strain distribution of lath martensitic steel during tensile deformation up to a strain of 10% has been measured in situ. Strain localization, which indicates grain interaction, is clearly observed in the vicinity of subblock boundaries, and it affects the inhomogeneous crystal rotation behavior within the block (or subblock), and hence the resultant rapid grain subdivision of the lath martensitic steel during elongation.