PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Characterization of solidification and solid state transformation in duplex cast steel: thermo-calc investigation

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper presents a characteristic of solidification process and changes occurring in the solid state in a duplex cast steel. Theoretical chemical composition of individual phases, its changes during solidification and cooling after solidification and also changes in volume fractions of phases versus temperature have been determined. Theoretical results of Thermo-Calc analysis have been correlated with the microstructure of as-cast cast steel as well as with analysis of chemical composition of individual phases, carried out on a scanning microscope equipped with an EDS attachment. It has been shown that at the carbon content of 0.1% the enrichment of residual liquid phase with carbon results in a peritectic reaction, changing the ferritic solidification model typical for cast steels with low carbon content. In the case of solidification grain boundary areas enrichment with carbon, chromium and molybdenum there is a possibility of carbides precipitation already in the liquid state, what increases propensity for hot cracking and reduces the quality of castings produced. A correlation between theoretical composition of ferrite, austenite and M23C6 carbides, determined based on Thermo-Calc software, and their actual composition determined based on local analyses of chemical composition carried out on a scanning microscope has been shown. The volume fractions of ferrite, austenite and carbides determined using Thermo-Calc software show a strong correlation with actual fractions of those phases in the examined alloy's structure. The chemical composition of ferrite, austenite and carbides determined using Thermo-Calc software does not show any more such strong correlation with the actual chemical composition of those phases determined based on local analyses of chemical composition carried out using a scanning microscope.
Rocznik
Strony
269--272
Opis fizyczny
Bibliogr. 15 poz., rys., tab.
Twórcy
autor
  • Czestochowa University of Technology, Faculty of Materials Processing Technology and Applied Physics, Institute of Materials Engineering, Al. A. Krajowej 19, 42-200 Czestochowa, dyjad@mim.pcz.czest.pl
Bibliografia
  • [1] P. Li, Q. Cai, B. Wei, Failure analysis of the impeller of slurry pump used in zinc hydrometallurgy process, Engineering Failure Analysis, 13 (2006), 876-885.
  • [2] D. Dyja, Z. Stradomski, S. Stachura, Possibilities of microstructure steering in ferritic-austenitic cast steel type GX2CrNiMoCu25-6-3-3, Archives of Foundry, Vol. 6, No. 18 (2006) 459-464 (in Polish).
  • [3] H. Berns, A. Kühl, Reduction in wear of sewage pump through solution nitriding, Wear, 256 (2004), 16-20.
  • [4] G. Lothongkum, P. Wongpanya, S. Morito, T. Furuhara, T. Maki, Effect of nitrogen on corrosion behavior of 28Cr-7Ni duplex and microduplex stainless steels in air-saturated 3.5wt% NaCl solution, Corrosion Science, 48 (2006), 137-153.
  • [5] J.-C. Tissier, D. Balloy, J. Dairon, S. Dorlencourt, J.-J. Ninin, Vacuum decarburization: a solution within reach of small foundries, Fonderie Fondeur d'Aujourd'hui, No. 246 (2005) 28-39.
  • [6] J. Dairon, S. Dorlencourt, J.-C. Tissier, D. Balloy, J.-J. Ninin, Vacuum decarburization: a solution within reach of small foundries, Fonderie Fondeur d'Aujourd'hui, No. 249 (2005), 26-39.
  • [7] Z. Stradomski, S. Stachura, D. Dyja, Ferritic-austenitic cast steel - perspective and problems, Hutnik - Wiadomości hutnicze, No. 6 (2006), 275-279 (in Polish).
  • [8] J. Głownia, Obróbka pozapiecowa staliwa uszlachetnia tworzywo na odlewy pracujące w trudnych warunkach, Przegląd Odlewnictwa, No. 9 (2000), 340-344 (in Polish).
  • [9] W. Hubner, E. Leitel, Peculiarities of erosion-corrosion processes, Tribology International, Vol. 29 (1996), 199-206.
  • [10] Cast materials from KSB, www. ksbgroup.com/ksb /web /COM/en/COM__en__Root.html
  • [11] www.kuhn-edelstahl.com/englisch/index.php?tab=110
  • [12] D. Dyja, Z. Stradomski, S. Stachura, Solidification structure of massive castings from duplex cast steel, Archives of Foundry, Vol. 5 (2005), 79-86.
  • [13] D. Dyja, Z. Stradomski, Solidification model of high alloy Fe-Cr-Ni cast steels, Archives of Foundry, Vol. 6, No 19 (2006), 81-88, (in Polish).
  • [14] Z. Stradomski, S. Stachura, D. Dyja, A. Zyska, Technological problems in elaboration of massive castings from duplex cast steel in aspect of production process optimization, Archives of Foundry, Vol. 5, No. 17 (2005), (in Polish).
  • [15] Z. Stradomski, S. Stachura, D. Dyja, Technological problems in elaboration of massive casting from duplex cast steel, SSW 2005 Conference&Expo, Maastricht, Netherlands (2005), 363-368.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ3-0032-0048
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.