Effects of Sintering Conditions on Structures and Properties of Sintered Tungsten Heavy Alloy
release_4g6vegc24fbc7owtmgthka6beq
by
Lenka Kunčická, Radim Kocich, Zuzana Klečková
Abstract
Probably the most advantageous fabrication technology of tungsten heavy alloys enabling the achievement of required performance combines methods of powder metallurgy and processing by intensive plastic deformation. Since the selected processing conditions applied for each individual processing step affect the final structures and properties of the alloys, their optimization is of the utmost importance. This study deals with thorough investigations of the effects of sintering temperature, sintering time, and subsequent quenching in water on the structures and mechanical properties of a 93W6Ni1Co tungsten heavy alloy. The results showed that sintering at temperatures of or above 1525 °C leads to formation of structures featuring W agglomerates surrounded by the NiCo matrix. The sintering time has non-negligible effects on the microhardness of the sintered samples as it affects the diffusion and structure softening phenomena. Implementation of quenching to the processing technology results in excellent plasticity of the green sintered and quenched pieces of almost 20%, while maintaining the strength of more than 1000 MPa.
In application/xml+jats
format
Archived Files and Locations
application/pdf 5.0 MB
file_4b6hpgns7zh2ti4mbpjrowh6xu
|
res.mdpi.com (publisher) web.archive.org (webarchive) |
Web Captures
https://www.mdpi.com/1996-1944/13/10/2338/htm
2022-05-02 07:46:33 | 53 resources webcapture_q7sqn3cwznhunkow7bm6664mci
|
web.archive.org (webarchive) |
Open Access Publication
In DOAJ
In ISSN ROAD
In Keepers Registry
ISSN-L:
1996-1944
access all versions, variants, and formats of this works (eg, pre-prints)
Crossref Metadata (via API)
Worldcat
SHERPA/RoMEO (journal policies)
wikidata.org
CORE.ac.uk
Semantic Scholar
Google Scholar