No CrossRef data available.
Article contents
Dynamic Compacting of Powders of Some Amorphous Alloys
Published online by Cambridge University Press: 26 February 2011
Abstract
At present amorphous metallic alloys have the broad expansion in various fields of science&engineering as a result of their unique properties. In particular, soft magnetic amorphous alloys are extensively used in electrical engineering. However the production of considerable-size nonporous wares based on the powders (or tapes) of these alloys is heavy problem owing to high hardness of the particles. Therefore shock wave’s compacting or Dynamic Compacting (DC) method is promising one to produce the wares on the base of powders of amorphous alloys because it can provides high strength and near zero porosity of the wares. The experimental D-U diagrams of soft magnetic amorphous alloys were obtained to realize this method of compacting. The calculations of the amplitude and duration of shock wave were carried out. The several versions of explosive devices using shock plane wave generator to produce circular magnetic conductors were developed and were tested. These magnetic conductors are based on amorphous alloys of 5BDSR, GM414, 10NSR trademarks (Fe with Cu, Nb, Si, B additives). XRD analysis proved that amorphous state of the alloys remains the same up to 20 GPa shock wave’s pressures. The mechanical, structural, electrical and magnetic properties both initial amorphous alloys and compacted one were obtained and compared as a result of the implemented works. It was stated that DC leads to increase of magnetic conductivity by factor ∼15 with respect to initial amorphous alloys powder. Besides the specific losses decrease in ∼4 times.
- Type
- Research Article
- Information
- Copyright
- Copyright © Materials Research Society 2006
References
1 Amorphous metallic alloys. Edited by Lyuborsky, F.E., translated from English. M.: Metallurgiya, 1987.Google Scholar
2
Nesterenko, V.F. Capabilities of shock-wave techniques for producing and compacting rapidly hardened materials. – FGV. № 6, 1985, p.85.Google Scholar
3
Roman, O.V., Bogdanov, A.P., Voloshin, Yu.N., Gorobtsov, V.G., Pikus, I.M. The structure and properties of amorphous powder materials upon explosive loading. –Metallovedeniye i termicheskaya obrabotka metallov, 1983, № 10, p.57.Google Scholar
4
Takagi, M., Kawamura, Y., Araki, M
et al. Preparation of bulk amorphous alloys by explosive consolidation and properties of the amorphous bulk. - Mater. Sci. and Eng., 1988 98, p.p. 457–460.Google Scholar
5
Voloshin, M.N., Novakova, A.A., Markov, A.I., et al. The dynamic compaction effect on the microstructure of Fe-B-Si-C amorphous alloy. – Fizika i khimiya obrabotki materialov, 1990, № 5, p.p. 118–124.Google Scholar
6
Jinyuan, L., Baoron, A., Tongxia, L.
et al.
M80S20 metallic powders and their explosive consolidation. - J.Mater.Sci, 1989, 24, #5, p.1753–1756.Google Scholar
7
Hare, Alan W., Murr, Lawrence E., Carlson, Paul F.. Implosive consolidation of a particle mass including amorphous material. US patent № 4490329 (B22F 1/00; B22F 1/02) Dec. 25, 1984.Google Scholar
8
Cline, Carl F.. Fabrication of metallic glass structures. US patent № 4612161 (B22F 3/08). Sep. 16 1986.Google Scholar
9
Starodubtsev, Yu.N., Bezozyorov, V.Ya. “Magnetic properties of amorphous and nano-crystalline alloys” (Russian), 2002, Ekaterinburg, UrGU publishing house.Google Scholar
11 RF patent № 2038576, published in BI № 18, 27.06.95.Google Scholar