Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 3
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

In the context of climate change, it is important to minimize the changes that are introduced in the territory adjacent to the object of human economic activity. In some cases, this can be done with the help of drainage-screened modules – an anti-filtration screen that redistributes the zone of influence of the drain placed near it. As a result, the drain regulates to a greater extent the zone of human economic activity (drainage system, tailing dump, populated area, etc.) and to a lesser extent lowers the level of groundwater in the adjacent territory. The use of drainage-screened modules in tailing farms, for the organized storage of mineral waste of enterprises makes it possible to increase the filtration stability of dike, ensuringthe uniform operation of the tailing dams, as well as reliable removal of intercepted groundwater. This is achieved because in the tailing farm the dikes are intensified by drainage-screened modules. Water, filtered through the body of the dike and under it, is intercepted by a drain. A part of the filtration flow, which is not intercepted by the drain, is stopped by the anti-filtration screen.

Go to article

Authors and Affiliations

Serhii Klimov
Oleg Pinchuk
Serhii Kunytskiy
Anastasiia Klimova
Download PDF Download RIS Download Bibtex

Abstract

The influence of rapid solidification from the liquid state on the structure of Al71Ni24Fe5 alloy was studied. The samples were prepared by induction melting (ingots) and high pressure die casting into a copper mold (plates). The structure was examined by X-ray diffraction (XRD), light microscopy and high resolution transmission electron microscopy (HRTEM). The mechanism of crystallization was described on the basis of differential scanning calorimetry (DSC) heating and cooling curves, XRD patterns, isothermal section of Al-Ni-Fe alloys at 850°C and binary phase diagram of Al-Ni alloys. The fragmentation of the structure was observed for rapidly solidified alloy in a form of plates. Additionally, the presence of decagonal quasicrystalline phase D-Al70.83Fe9.83Ni19.34 was confirmed by phase analysis of XRD patterns, Fast Fourier Transform (FFT) and Inverse Fast Fourier Transform (IFFT) of transmission electron microscopy images. The metastable character of D-Al70.83Fe9.83Ni19.34 phase was observed because of the lack of thermal effects on the DSC curves. The article indicates the differences with other research works and bring up to date the knowledge about Al71Ni24Fe5 alloys produced by two different cooling rates.
Go to article

Bibliography

[1] Tsai, A.P., Inoue, A. & Masumoto, T. (1989). New decagonal Al–Ni–Fe and Al–Ni–Co alloys prepared by liquid quenching. Materials Transactions, JIM. 30(2), 150-154. DOI: 10.2320/matertrans1989.30.150.
[2] Lin, Y., Mao, S., Yan, Z., Zhang, Y. & Wang, L. (2017). The enhanced microhardness in a rapidly solidified Al alloy. Material Science and Engneering: A. 692, 182-191. DOI: 10.1016/j.msea.2017.03.052.
[3] Kula, A., Blaz, L. & Lobry, P. (2016) Structure and properties studies of rapidly solidified Al-Mn alloys. Key Engineering Materials. 682, 199-204. DOI: 10.4028/www.scientific.net/KEM.682.199.
[4] Lavernia, E.J. & Srivatsan, T.S. (2010). The rapid solidification processing of materials: Science, principles, technology, advances, and applications. Journal of Materials Science. 45, 287-325. DOI: 10.1007/s10853-009-3995-5.
[5] Sukhova, O.V., Polonskyy, V.A. & Ustinovа, K.V. (2017). Structure formation and corrosion behaviour of quasicrystalline Al-Ni-Fe alloys. Physics and Chemistry of Solidstate. 18(2), 222-227. DOI: 10.15330/pcss.18.2.222-227.
[6] Kridli, G.T., Friedman, P.A. & Boileau, J.M. (2010). Manufacturing processes for light alloys. In P.K. Mallick (Eds.), Materials, Design and Manufacturing for Lightweight Vehicles (pp. 235-274). Woodhead Publishing.
[7] Bonollo, F., Gramegna, N. & Timelli, G. (2015). High-pressure die-casting: Contradictions and challenges. JOM: The Journal of the Minerals, Metals & Materials Society. 67, 901-908. DOI: 10.1007/s11837-015-1333-8.
[8] Naglič, I., Samardžija, Z., Delijić, K., Kobe, S., Dubois, J.M., Leskovar, B. & Markoli, B. (2017). Metastable quasicrystals in Al–Mn alloys containing copper, magnesium and silicon. Journal of Material Science. 52, 13657-13668. DOI: 10.1007/s10853-017-1477-8.
[9] He, Z., Ma, H., Li, H., Li, X. & Ma, X. (2016). New type of Al-based decagonal quasicrystal in Al60Cr20Fe10Si10 alloy. Scientific Reports. 6, 22337. DOI: 10.1038/srep22337.
[10] Kühn, U., Eckert, J., Mattern, N. & Schultz, L. As-cast quasicrystalline phase in a Zr-based multicomponent bulk alloy. Applied Physics Letter. 77, 3176-3178. DOI: 10.1063/1.1326036.
[11] Avar, B., Gogebakan, M., Yilmaz, F. (2008). Characterization of the icosahedral quasicrystalline phase in rapidly solidified Al-Cu-Fe alloys. Zeitschrift Für Kristallographie- Crystalline Materials. 223, 731-734. DOI: 10.1524/zkri.2008.1077.
[12] Surowiec, M.R. (2017). Quasicrystals. Warsaw: Polish Scientific Publishers PWN. (in Polish) [13] Ishimasa, T. (2016). Mysteries of icosahedral quasicrystals: How are the atoms arranged? IUCrJ. 3, 230-231. DOI: 10.1107/S2052252516009842.
[14] Pedrazzini, S., Galano, M., Audebert, F., Siegkas, P., Gerlach, R., Tagarielli, V.L. & Smith, G.D.W. (2019). High strain rate behaviour of nano-quasicrystalline Al93Fe3Cr2Ti2 alloy and composites. Materials Science and Engineering: A. 764, 138201. DOI: 10.1016/j.msea.2019.138201.
[15] Shadangi, Y., Shivam, V., Singh, M.K., Chattopadhyay, K., Basu, J. & Mukhopadhyay, N.K. (2019). Synthesis and characterization of Sn reinforced Al-Cu-Fe quasicrystalline matrix nanocomposite by mechanical milling. Journal of Alloys and Compounds. 797, 1280-1287. DOI: 10.1016/j.jallcom.2019.05.128.
[16] Audebert, F., Prima, F., Galano, M., Tomut, M., Warren, P.J., Stone, I.C. & Cantor, B. (2002). Structural characterisation and mechanical properties of nanocomposite Al-based alloys. Materials Transactions. 43, 2017-2025. DOI: 10.2320/matertrans.43.2017.
[17] Inoue, A. & Kimura, H. (2000). High-strength aluminum alloys containing nanoquasicrystalline particles. Materials Science and Engineering: A. 286, 1-10. DOI: 10.1016/S0921-5093(00)00656-0.
[18] Li, F.C., Liu, T., Zhang, J.Y., Shuang, S., Wang, Q., Wang, A.D., Wang, J.G. & Yang, Y. (2019). Amorphous–nanocrystalline alloys: fabrication, properties, and applications. Materials Today Advances. 4, 100027. DOI: 10.1016/j.mtadv.2019.100027.
[19] Qiang, J., Wang, D., Bao, C., Wang, Y., Xu, W. & Song, M. (2001). Formation rule for Al-based ternary quasi-crystals : Example of Al–Ni– Fe decagonal phase. Journal of Materials Reserach. 16(9) 2653-2660. DOI: 10.1557/JMR.2001.0364.
[20] Audebert, F. (2005). Amorphous and nanostructured Al-Fe and Al-Ni based alloys. In Idzikowski B., Švec P., Miglierini M. (Eds.) Properties and Applications of Nanocrystalline Alloys from Amorphous Precursors. NATO Science Series (Series II: Mathematics, Physics and Chemistry). Dordrecht: Springer.
[21] Milman, Y.V., Sirko, A.I., Iefimov, M.O., Niekov, O.D., Sharovsky, A.O. & Zacharova, N.P. (2006). High strength aluminum alloys reinforced by nanosize quasicrystalline particles for elevated temperature application. High Temperature Materials and Processes. 25(1-2), 19-29. DOI: 10.1515/HTMP.2006.25.1-2.19.
[22] Yadav, T.P., Mukhopadhyay, N.K., Tiwari, R.S. & Srivastava, O.N. (2007). Studies on Al-Ni-Fe decagonal quasicrystalline alloy prepared by mechanical alloying, Philosophical Magazine. 87(18-21), 3117-3125. DOI: 10.1080/14786430701355208.
[23] Babilas, R., Młynarek, K., Łoński, W., Lis, M., Łukowiec, D., Kądziołka-Gaweł, M., Warski, T., Radoń, A. (2021). Analysis of thermodynamic parameters for designing quasicrystalline Al-Ni-Fe alloys with enhanced corrosion resistance. Journal of Alloys and Compounds. 868, 159241. DOI: 10.1016/j.jallcom.2021.159241.
[24] Grushko, B., Lemmerz, U., Fischer, K. & Freiburg, C. (1996). The low-temperature instability of the decagonal phase in Al-Ni-Fe. Physica Status Solidi (a). 155, 17-30. DOI: 10.1002/pssa.2211550103.
[25] Raghavan, V. (2009). Al-Fe-Ni (Aluminum-Iron-Nickel). Journal of Phase Equilibria and Diffusion. 30(4), 85-88. DOI: 10.1007/s11669-008-9452-3.
[26] Konieczny, M., Mola, R., Thomas, P. & Kopcial, M. (2011). Processing, microstructure and properties of laminated Ni-intermetallic composites synthesised using Ni sheets and Al foils. Archives of Metallurgy and Materials. 56(3), 693-702. DOI: 10.2478/v10172-011-0076-y.
[27] Čelko, L., Klakurková, L. & Švejcar, J. (2010). Diffusion in Al-Ni and Al-NiCr interfaces at moderate temperatures. Defect and Diffusion Forum. 297-301, 771-777. DOI: 10.4028/www.scientific.net/DDF.297-301.771.
[28] Titran, R.H., Vedula, K.M. & Anderson, G.G. (1984). High temperature properties of equialomic FeAl with ternary additions. MRS Proceedings. 39(309), 1471-1478. DOI: 10.1557/PROC-39-309.
Go to article

Authors and Affiliations

K. Młynarek
1
T. Czeppe
2
R. Babilas
1

  1. Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland
  2. Institute of Metallurgy and Materials Science of Polish Academy of Sciences, 25 Reymonta 5 St., 30-059 Kraków, Poland
Download PDF Download RIS Download Bibtex

Abstract

In many application fields, thin-walled ductile iron castings can compete with castings made from aluminium alloys thanks as their show superior mechanical properties higher stiffness, vibrations damping as well as properties at higher temperatures. As problematic criterion in thin-walled cast-iron castings can be seen the graphitization ability and high sensitivity of the structure and the mechanical properties to the solidification rate.
The tests were curried on plate castings with wall thicknesses of 3, 5, and 8 mm, using inoculants based on FeSi70 with different contents of nucleation-active elements as aluminium, calcium, zirconium and magnesium. The inoculation was made by the in-mould method. In the experiments structures were achieved, differing by the graphite dispersity, structure and mechanical properties. The experiments have proved particularly a high sensitivity of the structure and the mechanical properties to the cooling rate of the sample castings. The influence of the inoculant type is less important than the influence of solidification rate.
Go to article

Bibliography

[1] Caldera, M., Chapetti, M., Massone, J.M. & Sikora J.A. (2007). Influence of nodule count on fatique properties of ferritic thin wall ductile iron. Materials Science and Engineering. 23(8), 1000-1004. DOI: 10.1179/174328407X185910
[2] Stefanescu, D.M., Dix, :.P., Ruxanda, R.E., Corbitt-Coburn, C. & Piwonka, T.S. (2002). Tensile properties of thin wall ductile iron. AFS Transactions. 02-178, 1149-1162 Schaumburg USA: AFS Society.
[3] Soedarsono, J.W., Suharno, B. & Sulamet-Ariobimo, R.D. (2011). Effect of casting design to microstructure and mechanical properties of 3 mm TWDI plate. Advance Material Researchs. 415-417, 831-837. https://doi.org/10.4028/www.scientific.net/AMR.415-417.831
[4] Labresque, C. (2003). Production and properties of thin-wall ductile iron castings. International Journal of Cast Metals Research. 16(1-3), 313- 317. https://doi.org/10.1080/13640461.2003.11819601
[5] Sulamet-Ariobimo, R.D., Soedersono, J.W. & Soemardi,T.P. (2017). Thin wall ductile iro and n castings. IntechOpen 72117. Advanced Casting Technologies. DOI: 10.5772/intechopen.72117
[6] Vijayan, S., Wilson, P. & Prabhakaran, K. (2017). Ultra low-density mullite foams by reaction sintering of thermo-foamed alumina-silica powder dispersion in molten sucrose. Journal of the European Ceramic Society. 37(4), 1657-1664. https://doi.org/10.1016/j.jeurceramsoc.2016.11.025
[7] Stefanescu, D.M., Alonso, G. & Suarez, R. (2020). Recent devepments in understanding nucleation and crystallization of spheroidal grapfite in iron- carbon-silicon alloys. Metals. 1092), 221, 1-39. DOI: 10.3390/met10020221.
[8] Alonso, G., Larrañaga, P., Stefanescu, D.M., De la Fuente, E., Natxiondo, A. & Suarez, R. (2017). Kinetics of nucleation and growth of graphite at different stages of solidification for spheroidal graphite iron. International Journal of Metalcasting. 11(1), 14- 26. DOI: 10.1007/s40962-016-0094-7
[9] Alonso, G., Stefanescu, D.M., Fuente, E., Larrana, P. & Suarez, R. (2018). The influence of trace elements on the nature of the nuclei of graphite ductile iron. Materials Science Forum. 925,78-85. ISSN 1662-9752
[10] Skaland, T. (2005). Nucleation mechanisms in ductile iron. Proceedings of AFS Cast Iron Inoculation Conference. 29-30 September 2005. Schaumburg. USA (pp. 13-30).
[11] Skaland, T., Grong, O. & Grong, T. (1993). A model for the graphite formation in ductile cast iron. Metal Transaction. 24A, 2321-2345.
[12] Lekakh, S. (2014). Analysis of heterogeneous nucleation in ductile iron. Shape casting. 5th International Symposium. Materials Science, January. 121-128. DOI: 10.1007/978-3-319-48130-2_15
[13] Alonso, G., Stefanescu, D.M., Suarez. R. (2020). Effect of antimony on nucleation process of spheroidal graphite iron. AFS Proceedings of the 124th Metalcasting congress. Paper 2020-04.
[14] Stefanescu, D.M. (2016). On the crystalization of graphite from liquid iron-carbon-silicon melts. Acta Materialia. 107, 102-126. https://doi.org/10.1016/j.actamat.2016.01.047
[15] Stefanescu, D.M. Ruxanda, R. & Dix, L.P. (2003). The metallurgy and tensile mechanical properties of thin wall spheroidal graphite irons. Int. Journal of Cast Metals Research. 16(1-3), 319-324. https://doi.org/10.1080/13640461.2003.11819602
[16] Javaid, A. (2001). In Proceedings of Cast Iron Division, AFS 105th Casting Congress, Dallas, USA.
Go to article

Authors and Affiliations

J. Roučka
1
ORCID: ORCID
V. Kaňa
1
ORCID: ORCID
T. Kryštůfek
1
A. Chýlková
1

  1. Brno University of Technology, Faculty of Mechanical Engineering, Czech Republic

This page uses 'cookies'. Learn more