caa a22 4500 467982325 CHVBK 20180323112522.0 cr unu---uuuuu 170328e19900401xx s 000 0 eng 10.1007/BF00729868 doi (NATIONALLICENCE)springer-10.1007/BF00729868 Effect of zirconium on the properties of steel 09G2 after controlled rolling [Elektronische Daten] [L. Popova, A. Nasibov] Conclusions: 1. When up to 0.1% of Zr is introduced to steel 09G2, its mechanical properties (σu, σy, δ and ψ) virtually do not improve after controlled rolling; in this case, however, the impact strength is increased by 20-50% at temperatures of −40°C and lower, and the work of crack development also increases over the entire temperature interval investigated. 2. The impact strength of the steel with zirconium increases as a result of an increase in the work of crack propagation. Its maximum value is reached at 0.1% Zr; when its content is increased to 0.18%, the resistance to fracture development is reduced, but it is, nevertheless, higher than that of the zirconium-free steel. 3. The improvement in the steel's ability to resist fracture development when zirconium is introduced is governed by grain-size reduction and also by the shape and arrangement of the nonmetallic inclusions. Plenum Publishing Corporation, 1990 Popova L. aut Nasibov A. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/4(1990-04-01), 267-269 0026-0673 32:4<267 1990 32 11041 https://doi.org/10.1007/BF00729868 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00729868 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Popova L. aut NATIONALLICENCE 700 1- Nasibov A. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/4(1990-04-01), 267-269 0026-0673 32:4<267 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer