caa a22 4500 465799310 CHVBK 20180323112048.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF00793538 doi (NATIONALLICENCE)springer-10.1007/BF00793538 Formation of properties and interparticular concrescence of hotformed powder materials. I. Influence of the method of obtaining powder materials on the concrescence of particles and on mechanical properties [Elektronische Daten] [B. Dorofeev, V. Dorofeev, Yu. Ivashchenko, A. Malyshenko, Yu. Podrezov, S. Firstov] Conclusions: The quality of concrescence is a factor determining the properties of powder material. High-quality concrescence of particles is promoted by shear strains, both at the stage of SCP and of HF. The highest indicates K1C are encountered in sintered and hotforged materials from reduced powder PZh2M3 with ramified shape of the particles. Segregation of impurity elements on the surface of open and closed pores of a porous compact upon sintering in vacuum leads to the stabilization of the interparticular boundaries. In the process of subsequent HF an anisotropic substructure therefore forms, the influence of interparticular segregation increases, and the indices Kic decrease. If the qualitY of concrescence in the sintered compacts is satisfactory, then the annealing of hot-forged specimens promotes the migration of the former interparticular boundary, its detachment from the impurity surface layer and inclusions of the second phase, and consequently it improves concrescence and crack resistance. Plenum Publishing Corporation, 1991 Dorofeev B. Scientific and Production Association of the Bearing Industry, USSR aut Dorofeev V. Scientific and Production Association of the Bearing Industry, USSR aut Ivashchenko Yu Scientific and Production Association of the Bearing Industry, USSR aut Malyshenko A. Scientific and Production Association of the Bearing Industry, USSR aut Podrezov Yu Scientific and Production Association of the Bearing Industry, USSR aut Firstov S. Scientific and Production Association of the Bearing Industry, USSR aut Soviet Powder Metallurgy and Metal Ceramics Kluwer Academic Publishers-Plenum Publishers 29/10(1990-10-01), 789-794 0038-5735 29:10<789 1990 29 11106 https://doi.org/10.1007/BF00793538 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00793538 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dorofeev B. Scientific and Production Association of the Bearing Industry, USSR aut NATIONALLICENCE 700 1- Dorofeev V. Scientific and Production Association of the Bearing Industry, USSR aut NATIONALLICENCE 700 1- Ivashchenko Yu Scientific and Production Association of the Bearing Industry, USSR aut NATIONALLICENCE 700 1- Malyshenko A. Scientific and Production Association of the Bearing Industry, USSR aut NATIONALLICENCE 700 1- Podrezov Yu Scientific and Production Association of the Bearing Industry, USSR aut NATIONALLICENCE 700 1- Firstov S. Scientific and Production Association of the Bearing Industry, USSR aut NATIONALLICENCE 773 0- Soviet Powder Metallurgy and Metal Ceramics Kluwer Academic Publishers-Plenum Publishers 29/10(1990-10-01), 789-794 0038-5735 29:10<789 1990 29 11106 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465799310 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer