Cast in situ composites of Ni3Al / MeC type

• Autorzy: Fraś E. , Janas A. , Kolbus A. , Olejnik E.
• Języki publikacji: EN

Abstrakty

EN

In this work a new method SHSB (Self- Propagating High-Temperature Synthesis in Bath) has been used to produce of five new composites i.e.Ni3Al / TiC, Ni3Al / WC, Ni3Al / Zr, Ni3Al / NbC and Ni3Al /TaC (in the amount of carbides of 5% volume fraction.) The composites fabricated by the 'in situ' process, with the Ni3Al compound used as a matrix material and the reinforcement composed of Ti, W, Zr, Nb or Ta carbide particles were made. Fabrication of composites was carried out in Balzers vacuum furnace and conducted the process in the atmosphere of argon at a negative gas pressure of 0,5 MPa. After melting down of aluminium and completion of the exothermic reaction between mixing powder of carbon, aluminium, titanium or tungsten, zirconium, niobium and tantalum, boron in the form of Al-B 3% master alloy was introduced to alloy melt. From thus fabricated composites, the specimens were prepared for metallographic examinations, and scanning topographic analysis. It have been shown that the size of TiC and TaC particles was comprised in a range of up to 10 [...]. The NbC and ZrC carbides were characterised by the dimensions of up to 20 [...], while WC carbides were the largest (up to 80 [...].) In all the examined composites, the X-ray microanalysis revealed total absence of reaction products at the matrix reinforcing particle interface. The SHSB process eliminated the fundamental problem - reactivity of the matrix-particle system, observed in the ex situ methods .

Słowa kluczowe

EN

composite in situ; intermetallic phase; SHSB process; exothermic reaction; carbides of TiC; WC; ZrC; NbC; TaC

PL

kompozyt in situ; faza międzymetaliczna; metoda SHSB; reakcja egzotermiczna; węglik; WC; ZrC; NbC; TaC

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 2
• Strony: 81--86
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Fraś E.

autor

Janas A.

autor

Kolbus A.

autor

Olejnik E.

• Chair of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, ul Reymonta 23, 30-059 Kraków, Poland,

Bibliografia

• [1] 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, 2006, 6, 18, 297-304 (in Polish).
• [2] E. Fraś, A. Janas, A. Kolbus, H. Lopez, Synthesis of Composites in situ Al/ TiC by SHSB method, IV Scientific Conference. PMTK- Composites 2000, Jaszowiec 2000, 201-207 (in Polish).
• [3] A. Janas, Doctor's Thesis, AGH, Cracow,1998 (in Polish).
• [4] L. Froyen, In situ processing of metal matrix composites, Proccedings of the International Conference on Light Alloys and Composites, Zakopane,1999, 15-29.
• [5] A. Ibrahim, F. Mohamed, E. Lavernia, Particulate reinforced metal-matrix composites- a review, Journal of Materials Science 26, 1997, 1137-1156.
• [6] S. C. Huang, A. I. Taub, K. M. Chang, Acta Metallurgica 1984, 32, 1703.
• [7] S. C. Deevi, V. K. Sikka, Procesing and Aplications Intermetalics, 1996, 4, 357.
• [8] E. Fraś, A. Janas, A. Kolbus, E. Olejnik, Cast Ni3Al / MeC (Me-W,Zr) composites in situ, Archives of Foundry,2006, 6, 18, 317-324 (in Polish).
• [9] S. Stolarz, High-melting Compounds and Phases, WŚ, Katowice, 1978 (in Polish).
• [10] A. Zuhair Munir, U. Anselmi-Tamburini, Self-propagating exothermic reactions, The synthesis of high-temperature materials by combustion in materials, Materials Science Reports, 1989, 3, 277.