Hot rolling of intermetallics FeAl phase based alloys

• Autorzy: Niewielski G. , Kuc D. , Schindler I. , Bednarczyk I.
• Języki publikacji: PL

Abstrakty

EN

Purpose: The one of major problem restricting universal employment of intermetallic phase base alloy is their low plasticity which leads to hampering their development as construction materials. The following work concentrates on possibilities to form through rolling process the alloys with various aluminium content. Design/methodology/approach: After casting and annealing, alloy specimens were subjected to axialsymmetric compression at temperatures ranging from 900 to 1200°C at 10 s-1 strain rates. In order to analyse the processes which take place during deformation, the specimens after deformation were intensely cooled with water. Structural examination was carried out using light microscopy. The process was conducted on the K -350 quarto rolling mill used for hot rolling of flat products. The process was conducted in some stages in at temperatures ranging from 1200-900°C: Findings: The research carried out enabled the understanding of the phenomena taking place during hot rolling of the investigated alloy. An alloy with 38%at. aluminium concentration can be plastically formed at a temperature of up to 900°C, which has been also confirmed in plastometric studies conducted in the form of hot compression tests. Research limitations/implications: Practical implications: The obtained sheets can be used as constructional elements working in complex stress fields, at a high temperature and corrosive environments Originality/value: The tests have shown that it is possible to form the investigated alloys through rolling processing only where shields are applied. Rolling of the alloys without shields led to the occurrence of a grid of cracks.

Słowa kluczowe

PL

obróbka plastyczna; aluminidek żelaza; gorące walcowanie; mikrostruktura

EN

plastic forming; iron aluminides; hot rolling; microstructure

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2008
• Tom: Vol. 29, nr 2
• Strony: 117--120
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Niewielski G.

autor

Kuc D.

autor

Schindler I.

autor

Bednarczyk I.

• Faculty of Materials Science and Metallurgy, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

• [1] N.S. Stoloff, Iron aluminides: present status and future, Materials Science and Engineering A 258 (1998) 1-14.
• [2] D.G. Morris, M.A. Mu?oz-Morris, J. Chao, Developmentof high strength, high ductility and high creep resistant iron aluminide, Intermetallics 12 (2004) 821-826.
• [3] U. Messerschmidt, M. Bartsch, Ch. Dietzsch, The flow stress anomaly in Fe–43at%Al single crystals, Intermetallics 14 (2006) 607-619.
• [4] D. Huang, W. Y. Yang, Z. Q. Sun, L. Froyen, Preparation and mechanical properties of large-ingot Fe3Al, Journal of Materials Processing Technology 146 (2004) 175-180.
• [5] A. Saigal, W. Yang, Analysis of milling of iron aluminides, Journal of Materials Processing Technology 132 (2003) 149-156.
• [6] S.P. Chakraborty, I.G. Sharma, A.K. Suri, D.K. Bose Studies on preparation, characterisation and evaluation of properties of Fe3Al-based intermetallic alloy of composition Fe–16Al–5.44Cr–1Nb–0.5C, Journal of Materials Processing Technology (2001) 413-422.
• [7] D. Kuc, G. Niewielski, M. Jabłońska, I. Bednarczyk, Deformability and Recrystallization of Fe-Al Intermetallic Phase - Base Alloy, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 107-110.
• [8] J. Cebulski, S. Lalik, Changes in the structure of alloy on the matrix of FeAl intermetallic phase after primary crystallization and homogenizing treatment, Proceedings of the 13th International Scientific Conference „Achievements in Mechanical and Materials Engineering” AMME’2005, Gliwice–Wisła, 2005, 59-62
• [9] P. Chakraborty, I.G. Sharma, A.K. Suri, D.K. Bose, Studies on preparation,characterisation and evaluation of properties of Fe3Al-based intermetallic alloy of composition Fe–16Al–5.44Cr–1Nb–0.5C Journal of Materials Processing Technology 115 (2001) 413-422.
• [10] B.S.J. Kang, R. Cisloiu, Evaluation of fracture behavior of iron aluminides Theoretical and Applied Fracture Mechanics 45 (2006) 25-40.
• [11] D. Kuc, I. Bednarczyk, G. Niewielki The influence of deformation on the plasticity and structure of Fe3Al - 5Cr alloy, Journal of Achievements in Materials and Manufacturing Engineering 22 (2007) 27-30.
• [12] G. Niewielski, D. Kuc, Structure and properties of highalloy steels, In: Hadasik E., editor, Plasticity of Metallic Materials, Publisher of Silesian University of Technology, Gliwice (2004) 199-221.
• [13] E. Hadasik, Determination of plasticity characteristics in hot torsion test, In: E. Hadasik editor, Plasticity of Metallic Materials, Publisher of Silesian University of Technology, Gliwice, (2004) 39-64.
• [14] D. Kuc, G. Niewielski, K. Radawa!ski, The structure and plasticity changes in stainless steels after hot-deformation processes, Proceedings of the 11th International Scientific Conference Contemporary Achievements in Mechanics, Manufacturing and Materials Science, CAM3S’2005, Gliwice–Zakopane (2005) 215-231.
• [15] I. Schindler, L. Cizek, L.A. Dobrzanski, P. Kozelsky, S. Rusz, T. Kubina, P. Suchanek, M. Marek, J. Boruta, L.Cerny, V. Svinc, Deformation behaviour and microstructure development of a high-carbon steel during its hot and cold processing, International Journal of Microstructure and Materials Properties 2 (2007) 224-237.