Arrangement of internal stresses in deformed austenitic steel is studied. The internal stresses are determined using parameters of bending extinction contours observing on electron microscope images of steel.

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The transmission electron microscopy (TEM) has been used to indicate the contribution of stress tensorcomponents to internal stresses in deformed polycrystalline austenitic steel. TEM images of steel deformation demonstrate bend extinction contours the parameters of which allow detecting the stress tensor components (bending and torsional stresses of a crystal lattice). The diagrams are constructed for the contribution of stress tensor components to internal stresses in grains having different types of bending. The regularities are obtained for the stress distribution due to bending-torsion of a crystal latticein the deformed face centered cubic crystal system. The experiment shows that the contribution of bending and torsion stress components to the internal stresses is different during the increase of deformation. The torsion stress component always grows with the increase of deformation, while the bending stress component either grows or lowers. The growth in the torsion stress component is typical for grains with compound bending

Arrangement of Internal Stresses in Deformed Austenitic Steel is Studied. the Internal Stresses are Determined Using Parameters of Bending Extinction Contours Observing on Electron Microscope Images of the Steel. at the Deformation Degree ε = 14% the Average Internal Stress Values inside Separate Grains with Complex Bending is much Greater than <σ> in a Grain with Simple Bending. the Difference of <σ> at the Deformation Degree ε = 25% in Grains with Simple and Complex Bending is Small. this is Explained by Considerable Relaxation of the Internal Stresses in the Deformed Steel Caused by Appearance at ε > 20% of a Great Number of Microtwin Packages

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