Abstract
In order to study the influence of inclusions on the deformation behavior of matrix, SEM data and EBSD data were collected under various loads by means of an in-situ tensile test. Specifically, the effect of MnS inclusions on the deformation behavior of matrix was studied at various stages. The experimental results show that the influence of different forms of inclusions on the deformation of the substrate differs at normal temperatures. The long-axis direction of inclusions perpendicular to the load direction influences the deformation behavior more than that of the long-axis direction parallel to the load direction and near-spherical inclusions. An analysis of the EBSD data reveals that the morphology and polymorphism of in-situ MnS inclusions coexist, and the deformation behavior of the two during the deformation process is significantly different, as is the influence on the deformation behavior of the matrix. SEM fracture scanning analysis shows that the presence of MnS particles causes the material to exhibit brittle fracture characteristics and promote material failure. In this study, the microscopic topography and the final load-displacement curve of each stage of the experiment are analyzed in detail, and the influence of inclusions on the deformation behavior of the matrix is explained in detail.
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