caa a22 4500 467981493 CHVBK 20180323112520.0 cr unu---uuuuu 170328e19900901xx s 000 0 eng 10.1007/BF00693339 doi (NATIONALLICENCE)springer-10.1007/BF00693339 Fractographic evaluation of the quality of coalescence of carbon steels [Elektronische Daten] [Yu. Dorofeev, Yu. Dybov, S. Egorov, E. Kolokolov] Conclusions: 1. In tension of specimens made from solid-phase welded joints of carbon steels, cracks nucleate in defects of the seam (micropores, nonmetallic inclusions), and also in zones of segregation of secondary phases, viz. "white bands" on the interface between layers. 2. From the ramification of the "network" of discovered intergranular delaminations in the zone of coalescence in mechanical tests, their dimensions and area occupied by them we can estimate the quality of coalescence. 3. The existence of sections of cleavage in the zone of coalescence is characteristic of a structure with small dimensions of the interlayer of the secondary phase. An increased cooling rate after deformation of the specimens causes a reduction of the dimensions of the segregating secondary phase, thereby also affecting the mechanism of failure in mechanical tests. 4. When the quality of coalescence improves, the form of failure changes from intergranular to intragranular. The cause of the appearance of cleavage in the fractures is the presence of oriented interlaminar boundaries in the zone of coalescence, and also chemical inhomogeneity in regard to carbon and oxygen. Plenum Publishing Corporation, 1991 Dorofeev Yu aut Dybov Yu aut Egorov S. aut Kolokolov E. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/9(1990-09-01), 689-693 0026-0673 32:9<689 1990 32 11041 https://doi.org/10.1007/BF00693339 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00693339 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dorofeev Yu aut NATIONALLICENCE 700 1- Dybov Yu aut NATIONALLICENCE 700 1- Egorov S. aut NATIONALLICENCE 700 1- Kolokolov E. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/9(1990-09-01), 689-693 0026-0673 32:9<689 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer