caa a22 4500 477059481 CHVBK 20180405111355.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF02067642 doi (NATIONALLICENCE)springer-10.1007/BF02067642 Mechanisms of plastic deformation, hardening, and fracture in single crystals of nitrogen-containing austenitic stainless steels [Elektronische Daten] [Yu. Chumlyakov, I. Kireeva, A. Korotaev, E. Litvinova, Yu. Zuev] We have carried out a systematic investigation of the mechanisms for solid-solution hardening by nitrogen atoms and dispersion hardening by nitride particles in single crystals of austenitic stainless steels with different stacking fault (SF) energies γSF=0.02-0.2 J/m2. We show that alloying with nitrogen CN=0-0.7 mass % and precipitation of dispersed particles leads to the appearance of an orientation dependence of the critical shearing stresses τcr, asymmetry phenomena, an orientation dependence of the slip and twinning deformation mechanisms, superelasticity, and transition from ductile fracture to brittle fracture. We develop dislocation models for solid-solution hardening by interstitial atoms, the orientation dependence and the asymmetry of τcr, based on taking into account the effect of the external stress field on the splitting of a/2〈110〉 dislocations into partial Schockley a/6〈211〉 dislocations and the change in the position of the interstitial atoms from octahedral interstitial sites to tetrahedral sites with a shift of the twinning a/6〈211〉 dislocations by a Burgers vector. We establish the role of strain localization, splitting of gliding dislocations, twinning, and a high stress level in creation of strain hardening, plastic flow instabilities, and the conditions for the "brittle-ductile" transition. Plenum Publishing Corporation, 1996 Chumlyakov Yu V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut Kireeva I. V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut Korotaev A. V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut Litvinova E. V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut Zuev Yu V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut Russian Physics Journal Kluwer Academic Publishers-Plenum Publishers 39/3(1996-03-01), 189-210 1064-8887 39:3<189 1996 39 11182 https://doi.org/10.1007/BF02067642 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02067642 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chumlyakov Yu V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut NATIONALLICENCE 700 1- Kireeva I. V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut NATIONALLICENCE 700 1- Korotaev A. V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut NATIONALLICENCE 700 1- Litvinova E. V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut NATIONALLICENCE 700 1- Zuev Yu V. D. Kuznetsov Siberian Physicotechnical Institute at Tomsk State University, USSR aut NATIONALLICENCE 773 0- Russian Physics Journal Kluwer Academic Publishers-Plenum Publishers 39/3(1996-03-01), 189-210 1064-8887 39:3<189 1996 39 11182 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer