Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering
The long rods of tungsten heavy alloy (WHA) which contain W–5Ni–1.5Fe (wt.%) were fabricated by using warm powder extrusion. The elemental powders were first mixed, and then the mixture was prepared for warm back extrusion by adding a proper binder at 5–10 wt.% concentrations. The extrusion temperat...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-04-01
|
| Series: | Journal of Materials Research and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785418307701 |
| _version_ | 1828902170603290624 |
|---|---|
| author | Mai Essam Ayman Elsayed Ahmed Shash Mahmoud Adly |
| author_facet | Mai Essam Ayman Elsayed Ahmed Shash Mahmoud Adly |
| author_sort | Mai Essam |
| collection | DOAJ |
| description | The long rods of tungsten heavy alloy (WHA) which contain W–5Ni–1.5Fe (wt.%) were fabricated by using warm powder extrusion. The elemental powders were first mixed, and then the mixture was prepared for warm back extrusion by adding a proper binder at 5–10 wt.% concentrations. The extrusion temperature was finely adjusted to facilitate the powder extrusion and eliminate cracks based on an extensive pre-study. Thermal debinding was also utilized prior to vacuum sintering. The results showed that the extruded rods with high length-to-diameter ratios could be obtained at the proposed binder content and extrusion temperature. The metallurgical and the mechanical characteristics of the extruded rods were evaluated and discussed with respect to the preparation route. Keywords: Tungsten heavy alloys, Warm extrusion, Thermal debinding, Vacuum sintering |
| first_indexed | 2024-12-13T16:11:32Z |
| format | Article |
| id | doaj.art-e10bf946a8a74a50958ef7b3cae2d8d1 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-13T16:11:32Z |
| publishDate | 2019-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e10bf946a8a74a50958ef7b3cae2d8d12022-12-21T23:38:55ZengElsevierJournal of Materials Research and Technology2238-78542019-04-018222092215Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sinteringMai Essam0Ayman Elsayed1Ahmed Shash2Mahmoud Adly3Central Metallurgical Research and Development Institute, P.O. Box 87, Helwan, Cairo, EgyptCentral Metallurgical Research and Development Institute, P.O. Box 87, Helwan, Cairo, Egypt; Corresponding author.Department of Mechanical Design and Production, Faculty of Engineering, Cairo University, Giza, Egypt; Faculty of Engineering and Materials Science, German University in Cairo, Cairo, EgyptDepartment of Mechanical Design and Production, Faculty of Engineering, Cairo University, Giza, EgyptThe long rods of tungsten heavy alloy (WHA) which contain W–5Ni–1.5Fe (wt.%) were fabricated by using warm powder extrusion. The elemental powders were first mixed, and then the mixture was prepared for warm back extrusion by adding a proper binder at 5–10 wt.% concentrations. The extrusion temperature was finely adjusted to facilitate the powder extrusion and eliminate cracks based on an extensive pre-study. Thermal debinding was also utilized prior to vacuum sintering. The results showed that the extruded rods with high length-to-diameter ratios could be obtained at the proposed binder content and extrusion temperature. The metallurgical and the mechanical characteristics of the extruded rods were evaluated and discussed with respect to the preparation route. Keywords: Tungsten heavy alloys, Warm extrusion, Thermal debinding, Vacuum sinteringhttp://www.sciencedirect.com/science/article/pii/S2238785418307701 |
| spellingShingle | Mai Essam Ayman Elsayed Ahmed Shash Mahmoud Adly Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering Journal of Materials Research and Technology |
| title | Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering |
| title_full | Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering |
| title_fullStr | Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering |
| title_full_unstemmed | Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering |
| title_short | Fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering |
| title_sort | fabrication of tungsten heavy alloy long rods by warm powder extrusion and vacuum sintering |
| url | http://www.sciencedirect.com/science/article/pii/S2238785418307701 |
| work_keys_str_mv | AT maiessam fabricationoftungstenheavyalloylongrodsbywarmpowderextrusionandvacuumsintering AT aymanelsayed fabricationoftungstenheavyalloylongrodsbywarmpowderextrusionandvacuumsintering AT ahmedshash fabricationoftungstenheavyalloylongrodsbywarmpowderextrusionandvacuumsintering AT mahmoudadly fabricationoftungstenheavyalloylongrodsbywarmpowderextrusionandvacuumsintering |