An effect of loading during uniaxial tension at different rates ranging from 10^{-4} to 10^{-2} s^{-1} on the phase transformation "austenite-martensite" in the surface layer of hardened 0.36%C-14%Ni steel type with an unbalanced (α+γ)-structure has been determined by an X-ray structure analysis. The mechanisms of (γ-α)-transformation through the depth of steel surface layer and character of this transformation propagation along the specimen length depending on external stress value and tension rate have been defined.
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