Compressibility of compacts from hard-alloy powder mixtures in hydrostatic working View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1977-09

AUTHORS

G. P. Mikhailenko, Yu. F. Chernyi

ABSTRACT

ConclusionsIt has been established that the HSW of compacts produced by pressing in dies is characterized by a pronounced anisotropy of densification, manifesting itself in preferential diametral densification, i.e. densification in the transverse direction, which brings about an equalization of density within the compacts.It has been found that the densification of compacts from hard-alloy powder mixtures in the HSW pressure range investigated (1–20 tons/cm2) is linked with deformation of particles of the powder composites. The process involves the second pressing stage, but occurs in two distinct phases: In the first phase (at p < 9.5–12 tons/cm2) densification proceeds rapidly and is accomplished mainly through deformation of the binder metal — cobalt, while in the second phase densification slows down, largely due to deformation of a “carbide skeleton.”It is shown that the compressibility in each of the two phases is described by a logarithmic equation. The maximum attainable compact density decreases with increase in the amount of the carbide component in the mixture. More... »

PAGES

672-676

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00791465

DOI

http://dx.doi.org/10.1007/bf00791465

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1085726926


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