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M Kawalec - One of the best experts on this subject based on the ideXlab platform.

  • role of titanium in thin wall vermicular graphite iron castings production
    Archives of Foundry Engineering, 2013
    Co-Authors: M Gorny, M Kawalec
    Abstract:

    In this paper the effects of titanium addition in an amount up to 0.13 wt.% have been investigated to determine their effect on the microstructure and mechanical properties of Thin Wall Vermicular Graphite Iron Castings (TWVGI). The study was performed for thinwalled iron castings with 3-5 mm wall thickness and for the reference casting with 13 mm. Microstructural changes were evaluated by analyzing quantitative data sets obtained by Image Analyzer and also using scanning electron microscope (SEM). Metallographic examinations show that in thin-walled castings there is a significant impact of titanium addition to vermicular graphite formation. Thinwalled castings with vermicular graphite have a homogeneous structure, free of chills, and good mechanical properties. It may predispose them as a potential use as substitutes for aluminum alloy castings in diverse applications.

  • effects of titanium addition on microstructure and mechanical properties of thin walled compacted graphite iron castings
    Journal of Materials Engineering and Performance, 2013
    Co-Authors: M Gorny, M Kawalec
    Abstract:

    This research studies the effects of titanium added in an amount up to 0.13 wt.% on the microstructure and mechanical properties. The research was conducted for thin-walled iron castings with 3-5 mm wall thickness and for the reference casting with 13 mm wall thickness to achieve various cooling rates. Microstructural changes were evaluated by analyzing quantitative data sets obtained by Image Analyzer and also using scanning electron microscope. Metallographic examination revealed in thin-walled castings a significant effect of the addition of Ti to compacted graphite, much stronger in comparison with castings with thicker sections. Moreover, thin-walled castings with high degrees of inoculation and which have been solidified under high cooling rates have a homogeneous structure, free of chills, and good mechanical properties, which may predispose them for potential use as substitutes for aluminum alloy castings in diverse applications.

Jiandong Xing - One of the best experts on this subject based on the ideXlab platform.

  • effect of niobium on the as cast microstructure of hypereutectic high chromium cast iron
    Materials Letters, 2008
    Co-Authors: Xiaohui Zhi, Jiandong Xing, Bing Xiao
    Abstract:

    Abstract The effect of niobium element on the as-cast microstructure of the hypereutectic high chromium cast irons containing 4.0 wt.% C and 20.0 wt.% Cr was studied by means of the optical microscopy, the scanning electron microscopy, the X-ray diffraction, the energy dispersive X-ray spectrometry, the electron probe microAnalyzer and the Leica Image Analyzer. With the addition of Nb, NbC carbides are formed in the hypereutectic high chromium cast irons, the carbides are refined and the shape of the primary M7C3 carbides becomes isotropic. The addition of niobium reduces the carbon content of the liquid due to the formation of the first precipitated NbC, thus reduces the volume fraction and size of the primary M7C3 carbides.

  • effect of titanium on the morphology of primary m7c3 carbides in hypereutectic high chromium white iron
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007
    Co-Authors: Xiaojun Wu, Jiandong Xing, Hanguang Fu
    Abstract:

    This paper studies the effect of titanium concentration on the morphology of primary M7C3 carbides in hypereutectic high chromium white cast iron by means of the optical microscopy (OM), the scanning electron microscopy (SEM), the X-ray diffraction (XRD), the energy dispersive X-ray spectrometry (EDS) and Leica Image Analyzer. Theoretical calculation shows that solute Ti atoms can react with carbon and form TiC particles under certain conditions in the melt of hypereutectic high chromium cast iron. The experimental results show that the morphology of primary M7C3 carbides can be improved by adding a suitable amount of Ti. This improvement correlated with the emergence of TiC particles. These particles can act as the substrates for heterogeneous nucleation of primary M7C3 carbides, which results in significant refinement of the final grain size.

Bing Xiao - One of the best experts on this subject based on the ideXlab platform.

  • effect of niobium on the as cast microstructure of hypereutectic high chromium cast iron
    Materials Letters, 2008
    Co-Authors: Xiaohui Zhi, Jiandong Xing, Bing Xiao
    Abstract:

    Abstract The effect of niobium element on the as-cast microstructure of the hypereutectic high chromium cast irons containing 4.0 wt.% C and 20.0 wt.% Cr was studied by means of the optical microscopy, the scanning electron microscopy, the X-ray diffraction, the energy dispersive X-ray spectrometry, the electron probe microAnalyzer and the Leica Image Analyzer. With the addition of Nb, NbC carbides are formed in the hypereutectic high chromium cast irons, the carbides are refined and the shape of the primary M7C3 carbides becomes isotropic. The addition of niobium reduces the carbon content of the liquid due to the formation of the first precipitated NbC, thus reduces the volume fraction and size of the primary M7C3 carbides.

Hanguang Fu - One of the best experts on this subject based on the ideXlab platform.

  • effect of titanium on the morphology of primary m7c3 carbides in hypereutectic high chromium white iron
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007
    Co-Authors: Xiaojun Wu, Jiandong Xing, Hanguang Fu
    Abstract:

    This paper studies the effect of titanium concentration on the morphology of primary M7C3 carbides in hypereutectic high chromium white cast iron by means of the optical microscopy (OM), the scanning electron microscopy (SEM), the X-ray diffraction (XRD), the energy dispersive X-ray spectrometry (EDS) and Leica Image Analyzer. Theoretical calculation shows that solute Ti atoms can react with carbon and form TiC particles under certain conditions in the melt of hypereutectic high chromium cast iron. The experimental results show that the morphology of primary M7C3 carbides can be improved by adding a suitable amount of Ti. This improvement correlated with the emergence of TiC particles. These particles can act as the substrates for heterogeneous nucleation of primary M7C3 carbides, which results in significant refinement of the final grain size.

M Gorny - One of the best experts on this subject based on the ideXlab platform.

  • role of titanium in thin wall vermicular graphite iron castings production
    Archives of Foundry Engineering, 2013
    Co-Authors: M Gorny, M Kawalec
    Abstract:

    In this paper the effects of titanium addition in an amount up to 0.13 wt.% have been investigated to determine their effect on the microstructure and mechanical properties of Thin Wall Vermicular Graphite Iron Castings (TWVGI). The study was performed for thinwalled iron castings with 3-5 mm wall thickness and for the reference casting with 13 mm. Microstructural changes were evaluated by analyzing quantitative data sets obtained by Image Analyzer and also using scanning electron microscope (SEM). Metallographic examinations show that in thin-walled castings there is a significant impact of titanium addition to vermicular graphite formation. Thinwalled castings with vermicular graphite have a homogeneous structure, free of chills, and good mechanical properties. It may predispose them as a potential use as substitutes for aluminum alloy castings in diverse applications.

  • effects of titanium addition on microstructure and mechanical properties of thin walled compacted graphite iron castings
    Journal of Materials Engineering and Performance, 2013
    Co-Authors: M Gorny, M Kawalec
    Abstract:

    This research studies the effects of titanium added in an amount up to 0.13 wt.% on the microstructure and mechanical properties. The research was conducted for thin-walled iron castings with 3-5 mm wall thickness and for the reference casting with 13 mm wall thickness to achieve various cooling rates. Microstructural changes were evaluated by analyzing quantitative data sets obtained by Image Analyzer and also using scanning electron microscope. Metallographic examination revealed in thin-walled castings a significant effect of the addition of Ti to compacted graphite, much stronger in comparison with castings with thicker sections. Moreover, thin-walled castings with high degrees of inoculation and which have been solidified under high cooling rates have a homogeneous structure, free of chills, and good mechanical properties, which may predispose them for potential use as substitutes for aluminum alloy castings in diverse applications.