NUMERICAL MODELING OF COLD SWAGING OF SINTERED W-BASED ALLOY

1 DOHNALÍK Daniel
Co-authors:
1 BAGHIROVA Banovsha 2 HAJÍČEK Michal 3 FUSEK Martin 3 KUBÍN Tomáš
Institutions:
1 Faculty of Metallurgy and Materials Engineering, VŠB – Technical Uinversity Ostrava, 17. listopadu 15, 70833 Ostrava- Poruba, CZ, EU
2 UJP PRAHA a.s., Nad Kamínkou 1345, 15600, Praha, CZ, EU
3 Faculty of Mechanical Engineering, VŠB-TU Ostrava, 17. listopadu 15, 70833 Ostrava-Poruba, CZ, EU
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
1329-1334
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
79 views / 21 downloads
Abstract

This paper numerically and experimentally describes the influence of cold rotary swaging on a pre-sintered tungsten alloy. The finite element method was applied to describe infeed swaging of 30 mm diameter circular bar with 30% reduction of cross-sectional area. The numerically studied results were distribution of strain, distribution of temperature, effective strain rate and material flow during a single pass. To validate the predicted results, experimental swaging of pre-sintered W-Ni-Co tungsten alloy was realized. The results of strain distribution were compared with results from microstructure analysis and distribution of microhardness along the cross section of the swaged sample. Results of mechanical testing showed higher microhardness in regions near the swaged surface. This fact corresponds to the distribution of strain predicted by numerical modeling

Keywords: Numerical modeling, cold swaging, tungsten alloy

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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