This article is cited in 12 papers

Effect of hydrogen on orientation dependence of critical shear stress and mechanism of straining in single crystals of stable stainless steel

I. V. Kireeva^a, Yu. I. Chumlyakov^a, A. V. Tverskov^a, H. Maier<sup>b

a</sup> Siberian Physical-Technical Institute of the Tomsk State University
^b University of Paderborn, Lehrstuhl f. Wekstoffkunde, Pohlweg 47–49, 33098, Paderborn, German

Abstract: The effect of hydrogen on the critical shear stress $(\tau_{cr})$, dislocation structure, and mechanisms of straining (slip vs. twinning) in single crystals of Fe–26%Cr–32%Ni–3%Mo wt%) austenite stainless steel has been studied. It is shown for the first time that hydrogenation leads to the appearance of the orientation dependence of $\tau_{cr}$, which is absent in the initial hydrogen-free crystals. This dependence of $\tau_{cr}$ is related to a decrease in the stacking fault energy, which determines a change of the mechanism of straining from slip to twinning.

Received: 12.01.2011

 English version: Technical Physics Letters, 2011, 37:6, 522–525

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