I. V. Kireeva

Effect of nitrogen and stacking-fault energy on twinning in [\( \bar 1 \)11] single crystals of austenitic stainless steels

AbstractThe dependence of critical shear stresses for twinning τcrtw on the stacking-fault energy γ0, the nitrogen concentration CN (wt %), and the test temperature has been studied for [

The influence of hydrogen on the mechanical and functional properties of TiNi and TiNiFe single crystals

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Pseudoelasticity in High Strengthening Fcc Single Crystals

11] single crystals of austenitic stainless steels upon tensile deformation. It is shown that τcrtw ∼ γ0/b1 in nitrogen-free steels, while it exhibits a nonmonotonic dependence on the nitrogen concentration CN in nitrogen-alloyed steels. An increase in τcrtw at CN = 0.3 wt % and its decrease at CN ≥ 0.5–0.7 wt % are determined by the competition of two contributions to τcrtw, namely, a decrease in γ0 and a solid-solution hardening with increasing nitrogen concentration.

The Effect of Twinning and Slip on the Bauschinger Effect of Hadfield Steel Single Crystals

AbstractThe development of the γ-α’ martensitic transformation (MT) upon tensile deformation of single crystals of austenitic stainless steels of compositions (wt %) Fe-17% Cr-12% Ni-2% Mn-0.75% Si (I) and Fe-18% Cr-12% Ni-2% Mo-0.015% C (II) has been studied as a function of the crystal-axis orientation and test temperature by X-ray diffraction and electron microscopy. It has been established that the orientation dependence of the slip deformation preceding the γ-α’ MT is determined by two factors, namely, the orientation dependence of slip deformation preceding the γ-ɛ MT and the orientation dependence of the work U necessary for the formation of the α’-martensite crystals. The orientation dependence of slip deformation preceding the γ-ɛ MT leads to the γ-α’ MT in the [n

Deformation twinning in difficult-to-work alloys during severe plastic deformation

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Shape memory effect and high-temperature superelasticity in high-strength single crystals

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