caa a22 4500 467980926 CHVBK 20180323112518.0 cr unu---uuuuu 170328e19900101xx s 000 0 eng 10.1007/BF00780419 doi (NATIONALLICENCE)springer-10.1007/BF00780419 Effect of high heat treatment on the mechanical properties and the crack resistance of steel 38KhN3MFA [Elektronische Daten] [M. Kramarov, A. Kondrat'ev] Conclusions: 1. Raising the temperature of preliminary homogenization of blanks produced by electroslag remelting of steel 38KhN3MFA from 1100 to 1180°C and extending it from 5 to 20 h causes, after double austenizing with tempering, an increase of impact toughness and crack resistance. The maximal values of a1 and at are attained after homogenization at 1800°C 20 h, and values close to them are attained with 1180°C 5 h. 2. To refine the austenitic grain in castings of ESR steel 38KhN3MFA, which had grown in high-temperature treatment, it is necessary and sufficient to apply double austenizing at 880-950 and 860-880°C. 3. Preliminary high-temperature treatment has a greater effect on the subcritical characteristics (maximal ductility, energy of crack nucleation) than on the supercritical ones (energy of crack propagation, stress intensity factor). Such treatment has practically no effect on the parameters of fatigue crack resistance. 4. The increase of ductility and energy content of fracture of steel under preliminary high-temperature treatment is accompanied by a substantial reduction of the proportion of intergranular fracture. The change in the nature of fracture is connected with the change of the morphology of the highly disperse sulfide phase, in particular with its coagulation in the process of holding at a high temperature. Plenum Publishing Corporation, 1990 Kramarov M. aut Kondrat'ev A. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/1(1990-01-01), 19-25 0026-0673 32:1<19 1990 32 11041 https://doi.org/10.1007/BF00780419 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00780419 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kramarov M. aut NATIONALLICENCE 700 1- Kondrat'ev A. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/1(1990-01-01), 19-25 0026-0673 32:1<19 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer