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Mohd Noor - One of the best experts on this subject based on the ideXlab platform.
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Investigation of thin wall Ductile Iron parameter
2009Co-Authors: Mohd Khairi, Mohd NoorAbstract:This thesis deals with thin wall Ductile Iron parameter.There are two main objectives of this research,firstly, to investigate the processing parameter of thin wall Ductile Iron by using Sandwich method and to investigate the process design parameter for thin wall Ductile Iron.The cast Iron has graphite in a matrix called pearlitic. The graphite shape is flake which is has lower strength. The study of graphite changes from flake form to nodular form by adding magnesium ferrosilicon as inoculation agent is under consideration. The Ductile Iron form is enhanced in strength and other mechanical properties. However, the thickness of thin wall is related to the composition of the magnesium adding.Green sand casting is one of the method for converting cast Iron to Ductile Iron.The thesis describes the method of green sand casting by using Sandwich technique to get the thin wall Ductile Iron sample.From the sample,the hardness test and composition of element is checked to determine the effect and mechanical properties of different thickness of thin wall Ductile Iron.
W. O. Soboyejo - One of the best experts on this subject based on the ideXlab platform.
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Sliding Wear Characteristics of Pack Cyanided Ductile Iron
Journal of Materials Engineering and Performance, 2019Co-Authors: E. K. Ampaw, S. O. O. Olusunle, A. R. Adetunji, E. K. Arthur, A. Y. Badmos, J. D. Obayemi, O. O. Adewoye, W. O. SoboyejoAbstract:In this paper, Ductile Iron was produced using a rotary furnace. The microstructures of the Ductile Iron (with and without cyanided coatings) were then characterized using optical microscopy and scanning electron microscopy (SEM). The surfaces of the Ductile Iron were subjected to high temperature carbo-nitriding using a pack cementation process in which carbon and nitrogen were diffused into the Ductile Iron from powder mixtures consisting of ground cassava leaves and barium carbonate (BaCO_3) energizers. The wear behavior of the coated and uncoated Ductile Iron was studied using the pin-on-disk method. The wear mechanisms are also elucidated using SEM and nano-wear experiments. The resulting wear rates are then compared with those from micron-scale wear tracks obtained from pin-on-disk experiments. The implications of the results are discussed for the design of wear-resistant Ductile Irons.
Marcin Górny - One of the best experts on this subject based on the ideXlab platform.
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Thin Wall Ductile Iron Castings: Technological Aspects
Archives of Foundry Engineering, 2013Co-Authors: Edward Fraś, Marcin Górny, W. KapturkiewiczAbstract:Abstract The paper discusses the reasons for the current trend of substituting Ductile Iron castings by aluminum alloys castings. However, it has been shown that Ductile Iron is superior to aluminum alloys in many applications. In particular it has been demonstrated that is possible to produce thin wall wheel rim made of Ductile Iron without the development of chills, cold laps or misruns. In addition it has been shown that thin wall wheel rim made of Ductile Iron can have the same weight, and better mechanical properties, than their substitutes made of aluminum alloys.
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Thin Wall Austempered Ductile Iron (TWADI)
Archives of Foundry Engineering, 2009Co-Authors: Edward Fraś, Marcin GórnyAbstract:In this paper the analysis of thin walled castings made of Ductile Iron is considered. It is shown that thin wall austempered Ductile Iron can be obtained by means of short-term heat treatment of thin wall castings without addition of alloying elements. Metallographic examinations of 2 mm thin walled castings along with casting with thicker wall thickness (20x28 mm) after different austempring conditions are presented. It has been proved that short-term heat treatment amounted 20 minutes of austenitizing at 880 o C followed by holding at 400 o C for 5 minutes causes ausferrite matrix in 2 mm wall thickness castings, while casting with thicker wall thickness remain untransformed and martensite is still present in a matrix. Finally there are shown that thin wall Ductile Iron is an excellent base material for austempering heat treatments. As a result high mechanical properties received in thin wall plates made of austempered Ductile Iron.
Edward Fraś - One of the best experts on this subject based on the ideXlab platform.
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Thin Wall Ductile Iron Castings: Technological Aspects
Archives of Foundry Engineering, 2013Co-Authors: Edward Fraś, Marcin Górny, W. KapturkiewiczAbstract:Abstract The paper discusses the reasons for the current trend of substituting Ductile Iron castings by aluminum alloys castings. However, it has been shown that Ductile Iron is superior to aluminum alloys in many applications. In particular it has been demonstrated that is possible to produce thin wall wheel rim made of Ductile Iron without the development of chills, cold laps or misruns. In addition it has been shown that thin wall wheel rim made of Ductile Iron can have the same weight, and better mechanical properties, than their substitutes made of aluminum alloys.
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Thin Wall Austempered Ductile Iron (TWADI)
Archives of Foundry Engineering, 2009Co-Authors: Edward Fraś, Marcin GórnyAbstract:In this paper the analysis of thin walled castings made of Ductile Iron is considered. It is shown that thin wall austempered Ductile Iron can be obtained by means of short-term heat treatment of thin wall castings without addition of alloying elements. Metallographic examinations of 2 mm thin walled castings along with casting with thicker wall thickness (20x28 mm) after different austempring conditions are presented. It has been proved that short-term heat treatment amounted 20 minutes of austenitizing at 880 o C followed by holding at 400 o C for 5 minutes causes ausferrite matrix in 2 mm wall thickness castings, while casting with thicker wall thickness remain untransformed and martensite is still present in a matrix. Finally there are shown that thin wall Ductile Iron is an excellent base material for austempering heat treatments. As a result high mechanical properties received in thin wall plates made of austempered Ductile Iron.
Li Ling-fang - One of the best experts on this subject based on the ideXlab platform.
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Microstructure Analysis of Low Carbon Ductile Iron
Materials for Mechanical Engineering, 2005Co-Authors: Li Ling-fangAbstract:The microstructure of low carbon Ductile Iron inoculated by Sx inocula was studied. Both matrix and graphite were analyzed by TEM and SEM.The as-cast low carbon Ductile Iron was made up from graphite and pearlite.The graphite was polycrystal.There was orientation relationship between ferrite and cemenite in pearlite matrix.
