Warianty tytułu
Języki publikacji
Abstrakty
Purpose: In this work, it is pretended to make a comparison of different pearlite contents in pieces with similar shape and dimensions and to analyze the variation of mechanical properties as pearlite content increases. The three pieces used had form of stair made of ductile cast iron. Design/methodology/approach: The present study was based on an adequate balance of alloying elements. None heat treatment was used to obtain different pearlite contents in the microstructures. Many specimens taken from the cast were mechanized to be polished and swabbed with nital to analyze the microstructure. To study the mechanical properties these casts present many tests were done such as Charpy impact test, done at different temperatures. Fracture toughness and tensile strength tests were done, as well. Findings: This study gave evidences that heat treatments are not necessary to obtain different pearlite content in the microstructure. Good mechanical properties are obtained by an appropriate balance of alloying elements. Research limitations/implications: They are that of natural sources. Besides, high and precision technology must be applied to get the present results better. Practical implications: Cast iron productions are focussed straight on machine building and automotive industries and constructions. The low cost production of ductile cast iron, its mechanical properties and low cost transformations are the tempting for application. Originality/value: The whole experimental work and the appropriate results obtained as consequences of the analysis carried out are novel, although applied methods are well known. Values presented in tables are given as new results of our experiments. This work is of great importance for the development of new economical methods for ductile iron production. This study is directed to researchers and metallurgy centres.
Rocznik
Tom
Strony
150-158
Opis fizyczny
Bibliogr. 30 poz., rys., tabl.
Twórcy
autor
autor
autor
autor
- Department of Rural Engineering and Projects, Public University of Navarre, 31005 Pamplona, Navarre, Spain, ra.gonzaga@unavarra.es
Bibliografia
- [1] H. Fredriksson, J. Stjerndahl, J. Tinoco, On the solidification of the nodular cast iron and its relation to the expansion and contractions, Materials Science and Engineering 413 (2005) 363-372.
- [2] J. Piaskowski, J. Tybulczyk, A. Kowalski, Ductile iron-the greatest achievement in foundry materials of the latest fifty years, Proceedings of the 8th Scientific International Conference “Achievements in Mechanical and Materials Engineering” AMME’99, Gliwice - Rydzyna - Pawlowice - Rokosowa, 1999, 473-476.
- [3] A. Almansour, M. Kazuhiro, T. Hatayama, O. Yanagisawa, Simulating solidification of spheroidal graphite cast iron of Fe-C-Si systems, Materials Transaction JIM 36/12 (1995) 1487-1495.
- [4] A. Pytel, K. Sekowski, Microstructure and mechanical properties of vermicular low-alloy cast iron, Proceedings of the 7th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME’98, Gliwice - Zakopane, 1998, 435-438 (in Polish).
- [5] J. Szajnar, T. Wróbel, Influence of magnetic field and inoculation on columnar structure, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 209-212.
- [6] L. Cižek, M. Greger, L. A. Dobrzański, I. Juricka, R. Kocich, L. Pawlica, T. Tański, Mechanical properties of magnesium alloy AZ91 at elevated temperatures, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 203-206.
- [7] H. Leda, T. Tomczak, Influence of solidification conditions and strontium content on microstructure of cast Al-Si-Mg alloys, Proceedings of the 9th Scientific International Conference „Achievements in Mechanical and Materials Engineering” AMME’2000, Gliwice - Sopot - Gdańsk, 2000, 349-352.
- [8] G. Marquis, R. Rabb, L. Siivonen, Endurance Limit Design of Spheroidal Graphite Cast Iron Components Based on Natural Defects, in: Fatigue Crack Growth Thresholds, Endurance Limits, and Design, ASTM, 2000, 411-426.
- [9] ASTM, Standard test method for plane-strain fracture toughness of metallic materials E 399-90, Annual Book of ASTM Standards, 1992.
- [10] W. L. Bradley, M. N. Srinivasan, Fracture and fracture toughness of cast irons, International Materials Reviews 35 (1990) 129-161.
- [11] M. Hafiz, Mechanical Properties of SG-Iron with Different Matrix Structure, Journal of Materials Science 36 (2001) 1293-1300.
- [12] J. Ratto, F. Ansaldi, E. Fierro, R. Aguera, Low Temperature Impact Tests in Austempered Ductile Iron and Other Spheroidal Graphite Cast Iron Structures, ISIJ International 41 (2001) 372-380.
- [13] Ductile Iron Society, Ductile Iron Data for Design Engineers, Proceedings of the Ductile Iron Production Seminar, 2002, 1-19.
- [14] T. Kobahyashi, Toughness problems in advanced materials, International Journal of Materials and Technology 14 (1999) 127-146.
- [15] S. Harada, Y. Kuroshima, The effect of nodule counts on the low-cycle fatigue properties of ferritic Ductile Cast Iron, Fatigue Crack Growth, Environmental Effects, Modeling Studies, ASTM 36 (1995) 247-252.
- [16] B. Formanek, S. Jónwiak, B. Szczucka-Lasota, A. Dolata- Grosz, Z. Bojar, Intermetallic Alloys with Oxide Particles and Technological Concept for High Loaded Materials, Proceedings of the 13th International Scientific Conference “Achievements in Mechanical and Materials Engineering” AMME’ 2005, Gliwice - Wisła, 2005, 235-242.
- [17] J. M. Borrajo, R. A. Martinez, R. E. Boeri, J. A. Sikora, Shape and Count of Free Graphite Particules in Thin Wall Ductile Iron Castings, ISIJ International 42/3 (2002) 257-263.
- [18] A. Alejandro, P. Ipina, E. Juan, In Situ Fracture Toughness Measurement Using Scanning Electron Microscopy, Journal of Testing and Evaluation 31 (2003) 413-422.
- [19] S. Pietrowski, G. Gumienny, Crystallisation of Ductile Cast Iron with Mo, Cr, Cu and Ni, Archives of Foundry 6/22 (2006) 406-415 (in Polish).
- [20] K. Edalati, F. Akhlaghi, M. Nili-Ahmadabadi, Influence of SiC and FeSi addition on the characteristics of gray cast iron Meles poured in different temperatures, Journal of Materials Processing Technology 160 (2005) 183-187.
- [21] M. Hafiz,Tensile properties and Fracture of Ferritic SG-Iron Having Different Graphite-Shell Structure, Journal of Materials Research 92/11 (2001) 1258-1261.
- [22] M. Hecht, F. Condet,Graphite Shape and Usual Tensile Properties of SG Cast Iron, Fonderie Fondeur d’ Aujourdhui 212/1 (2002) 14-28.
- [23] L. A. Dobrzański, T. Tański, L. Cižek, Mechanical roperties and wear resistance of magnesium casting alloys, Journal of Achievements in Materials and Manufacturing Engineering 27/1 (2008) 83-90.
- [24] N. Marinis, T. Pacifico, C. Pappalettere, Mechanical Characterization of Plastic Materials and Models Obtained with Rotational Molding, Proceedings of the International Conference “Advances in Materials and Processing Technology“ AMPT 2003, Dublin, 2003, 1501-1504.
- [25] H. Lin, T. Lui, C. Li, Efect of Silicon Content on Intergranular Embrittlement of Ferritic Spheroidal Graphite Cast Iron Suffered from Cyclic Heating, Materials Transactions 44 (2003) 173-180.
- [26] F. Morel, T. Polin, A non-local theory applied to high cycle multiaxial fatigue, Fatigue and Fracture of Engineering Materials and Structures 25 (2002) 649-665.
- [27] N. Kazumasa, N. Norikazu, K. Mitsu,Effect of the Nodule Count on Bound Toughness, Welding Research Abroad 46 (2000) 24-26.
- [28] F. Nabil, et al, Microstructure and Mechanical Properties of SGI, Journal of Materials Research 89 (1998) 507-513.
- [29] A. Rossoll, C. Berdin, C. Prioul, Determination of the Fracture Toughness of a Low Alloy Steelby the instrumented Charpy impact test, International Journal of Fracture (in press).
- [30] M. Rothwell, I. Graham, The Measurement of Fracture Toughness Using Constraint Enhanced Sub-sized Specimens, Proceedings of the International Conference “Advances in Materials and Processing Technology” AMPT’2003, Dublin, 2003, 1392-1395.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BOS2-0020-0023