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Analysis of the structure of castings made from chromium white cast iron resistant to abrasive wear

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Języki publikacji
EN
Abstrakty
EN
It has been proved that an addition of boron carbide and disintegrated steel scrap introduced as an inoculant to the chromium white cast iron changes the structure of castings. The said operation increases the number of crystallization nuclei for dendrites of the primary austenite. In this case, the iron particles act as substrates for the nucleation of primary austenite due to a similar crystallographic lattice. The more numerous are the dendrites of primary austenite and the structure more refined and the mechanical properties higher. Castings after B4C inoculation revealed a different structure of fine grained fracture. Primary precipitates of chromium carbide also appeared, reducing the mechanical properties of as-cast parts. Properly established heat treatment regime makes chromium iron castings regain their, originally high, mechanical properties.
Rocznik
Strony
109--112
Opis fizyczny
Bibliogr. 8 poz., rys., tab., wykr.
Twórcy
  • AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland, djk@uci.agh.edu.pl
Bibliografia
  • [1] Cz. Podrzucki: Cast Iron. The Structure, Propriety, Application. T.1 and T.2, Wyd. ZG STOP, Kraków 1991 (in Polish).
  • [2] E. Guzik: Mechanical properties of high-chromium cast iron with the oriented structure. Papers of Commission Metallurgy and Foundry, Metallurgy No 34, 1986, 73-89 (in Polish).
  • [3] W. Sakwa, S. Jura, J. Sakwa: Wear resistance cast iron. Part I. Cast iron. Wyd. ZG STOP, Kraków 1980 (in Polish).
  • [4] S. Pietrowski, B. Pisarek: Estimation of chromium cast iron structure by DTA method. Krzepnięcie Metali i Stopów, PAN-Katowice, Nr 16, 1992, s. 179-190 (in Polish).
  • [5] A. Studnicki: Influence of selected modifiers on crystallization curve of chromium cast iron. Archives of Foundry Engineering, PAN-Katowice, vol. 9, 2009, 181-188.
  • [6] A. Bedolla-Jacuinde, R. Correa, J. G. Quezada, C. Maldonado: Effect of titanium on the as-cast microstructure of a 16% chromium white iron. Materials Science and Engineering A 398, 2005, 297-308.
  • [7] X. Zhi, J. Xing, Y. Gao, H. Fu, I. Peng, B. Xiao: Effect of heat treatment on microstructure and mechanical properties of a Ti-bearing hypereutectic high chromium white cast iron. Materials Science and Engineering A 487, 2008, 171-179.
  • [8] D. Kopyciński, E. Guzik: Effective inoculation of low-sulphur cast iron. Archives of Foundry Engineering 2008, vol. 8, 78-81.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ1-0072-0020
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