caa a22 4500 467982368 CHVBK 20180323112522.0 cr unu---uuuuu 170328e19900401xx s 000 0 eng 10.1007/BF00729876 doi (NATIONALLICENCE)springer-10.1007/BF00729876 Influence of annealing on the rate and mechanism of crack propagation in weld joints of 12KhGDAF steel [Elektronische Daten] [V. Goritskii, V. Evdokimov] Conclusions: 1. Annealing of weld joints of 12KhGDAF steel with retarded cooling (110°C/h) leads to a significant increase in the stable fatigue crack growth rate both in the base metal and in the zone near the joint and the weld joint. With Δ<1140 N/mm3/2 the highest crack propagation rate is characteristic of the joint metal. 2. Despite the significant refinement of the effective ferritic grain size in the weld joint in annealing, as the result of this treatment the grain boundaries are weakened, which causes stable fatigue crack propagation primarily according to the mechanism of brittle intergranular fracture. 3. Annealing of weld joints does not influence the amount of jump of fatigue crack in the stage of either stable or unstable growth. 4. For the purpose of suppressing reversible temper brittleness developing in retarded cooling of weld joints of 12KhGDAF steel it is desirable to cool them at a rate of more than 110°C/h in the 600-350°C range. Plenum Publishing Corporation, 1990 Goritskii V. aut Evdokimov V. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/4(1990-04-01), 294-298 0026-0673 32:4<294 1990 32 11041 https://doi.org/10.1007/BF00729876 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00729876 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Goritskii V. aut NATIONALLICENCE 700 1- Evdokimov V. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/4(1990-04-01), 294-298 0026-0673 32:4<294 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer