The role of second-type distortions in the densification processes accompanying compacting and recrystallization during the sintering of refractory metals

Autor:	F. N. Alekseeva, V. S. Rakovskii, R. S. Matyushenko, A. F. Silaev
Rok vydání:	1965
Předmět:	Materials science Metallurgy Metals and Alloys Niobium Refractory metals Sintering chemistry.chemical_element Recrystallization (metallurgy) Tungsten Condensed Matter Physics Grain size Chromium chemistry Mechanics of Materials Molybdenum Materials Chemistry Ceramics and Composites
Zdroj:	Soviet Powder Metallurgy and Metal Ceramics. 3:355-359
ISSN:	1573-9066 0038-5735
DOI:	10.1007/bf00774232
Popis:	1. The densification process of tungsten, molybdenum, niobium, and chromium powders during compacting is characterized by the same regularities. 2. With increasing compacting pressure, microdistortions build up, their magnitude attaining a maximum at a pressure of 4000–6000 daN/cm2. Upon further increase of compacting pressure, the growth of microdistortions ceases. 3. The character of variation of the elastic expansion of tungsten, molybdenum, niobium, and chromium powders is similar to that of their second-type microstresses. 4. Second-type microstresses exert a substantial influence on the size of recrystallized grains. With increasing values of second-type microstresses, recrystallized grains grow intensively up to the stage corresponding to saturation with microstresses. Subsequently, grain size becomes stabilized and is practically independent of the magnitude of second-type microstresses.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bd3b96ccd50637bdc37413d6e7c5fdfa https://doi.org/10.1007/bf00774232 Zobrazit plný text záznamu Full text from SpringerLink