Abstract

The influence of interphase boundaries (IBs) on mechanical properties of two phase austenitic-ferritic steel has been studied. It was assumed that the mechanical behaviour of the material depends on the IB reaction to the internal stresses created during loading. This reaction can be interpreted as a mechanical property of the boundary. In order to determine the microscopic mechanism of such reactions the in situ TEM straining experiments have been performed. It was shown, that the macroscopic mechanical behaviour of the steel depends on the mechanical properties of the IBs.

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