Composite zones produced in situ in the Ni₃Al phase

• Autorzy: Olejnik E. , Janas A. , Sikora G. , Tokarski T. , Nowak J.
• Języki publikacji: EN

Abstrakty

EN

The study presents the results of research on the development of composite zones in castings based on the intermetallic phase of Ni₃Al. Composite zones were obtained by placing packets with substrates for the reaction of titanium carbide in a foundry mould. To provide a variable carbides content in the composite zone, two compositions of the packets were prepared. The first packet contained only substrates for the reaction of TiC synthesis; the second one also contained a filler. The resulting composite zones in castings were examined for the filler effect on changes in the volume fraction, size and morphology of carbides in the zone. In addition, the effect of filler on the mechanical properties of the zone was verified, observing changes of Vickers hardness in this area. It was found that the presence of filler in the composition of the packet for synthesis reduced the content of carbides, as well as their size and morphology. Lower surface content of carbides reduced hardness of the zone, which enabled smooth control of the mechanical properties. At the same time, the use of the selected filler did not disturb the course of the TiC carbide synthesis.

Słowa kluczowe

EN

composite layer; Ni3Al; cast intermetallic; in situ; synthesis TiC carbides

PL

warstwa kompozytowa; Ni3Al; in situ; węglik TiC

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2013
• Tom: Vol. 13, iss. 1
• Strony: 107--112
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Olejnik E.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta St. 23, 30-059 Krakow, Poland

autor

Janas A.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta St. 23, 30-059 Krakow, Poland

autor

Sikora G.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta St. 23, 30-059 Krakow, Poland

autor

Tokarski T.

• AGH University of Science and Technology, Faculty of Non -Ferrous Metals, Mickiewicza Av. 30 30-059 Krakow, Poland

autor

Nowak J.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta St. 23, 30-059 Krakow, Poland

Bibliografia

• [1] S. C. Deevi, V. Sikka, Nickel and iron aluminides: an overview on properties, processing and applications, Intermetallics, 4 (1996) 357-375.
• [2] V. K. Sikka, M. L. Santella, J. E. Orth, Processing and operating experience of Ni3Al-base intermetallic alloy IC-221M. Materials Science and Engineering, A 239-240 (1997) 564-569.
• [3] E. Olejnik, A. Janas, B. Grabowska, M. Kawalec, Effect of carbon addition on functional and mechanical properties of the Ni3Al phase, Metalurgija, vol. 51, No 4 (2012) 445-448.
• [4] E. Fraś, A. Janas, P. Kurtyka, S. Wierzbiński, Structure and properties of cast Ni3Al/TiC and Ni3Al/TiB composites. Pt. 1, SHSB method applied in fabrication of composites based on intermetallic phase Ni3Al reinforced with particles of TiC and TiB, Archives of Metallurgy and Materials, vol. 48, No 4 (2003) 383–408.
• [5] E. Fraś, A. Janas, A. Kolbus, E. Olejnik, Matrix - particle interphase boundaries of the selected in situ and ex situ composites MMCs, Archives of Foundry, vol. 18, No 6 (2006), 297-304 (in Polish).
• [6] A. Janas, A. Kolbus, E. Olejnik, Synthesis of Ni3Al composites reinforced by TiC, WC, ZrC, NbC, TaC – carbide particles, Composites Theory and Practice, 2 (2011) 114-119 (in Polish).
• [7] E. Olejnik, A. Janas, A. Kolbus, B. Grabowska, Composite layers fabricated by in situ technique in iron castings, Composites Theory and Practice, 2 (2011) 120-124 (in Polish).
• [8] S. C. Deevi, V. K. Sikka, Exo-Melt Process for melting casting intermetallics, Intermetallics, 5 (1997) 17-27.
• [9] A.E. Karantzalis, A. Lekatou, E. Georgatis, Z. Arni, V. Dracopoulos, Solidification observations of vacuum arc melting processed Fe-Al-TiC composites: TiC precipitation mechanisms, Materials Characterization, 62 (2011) 1196-1204.