Affiliations: Nuclear Physics Institute, 250 68 Řež near Prague, Czech Republic | Department of Materials Science, Ibaraki University, 4-12-1 Nakanarusawa-cho, Hitachi, Ibaraki, Japan
Note: [] Corresponding author.
Abstract: The strengthening mechanism of heavily cold-drawn pearlitic steel wires was studied using the high-resolution neutron diffraction experiment performed in situ upon tensile deformation. Microstructural parameters of lattice strain, microstrain and coherent block size, the evolution of which evidences the deformation mechanism of this ultrahigh strength steel, were extracted from the position, width and shape of the in situ recorded neutron diffraction profiles, respectively, using a newly proposed method of profile shape analysis. It was found that the deformation mechanism of cold-drawn pearlitic steel wires resembles the behavior of nanocrystalline materials.
Keywords: In situ high resolution neutron diffraction, Profile analysis, Pearlitic steel, Tensile deformation
