white cast iron microstructure

Fig. Microstructure For Cast Iron. 1) Gray cast iron: These alloys consists carbon in form graphite flakes, which are surrounded by either ferrite or pearlite. Because of presence of graphite, fractured surface of these alloys look grayish, and so is the name for them. White cast iron: When Si content is low (less than 1%) in combination

MICROSTRUCTURAL CHARACTERISTICS OF HIGH CR WHITE CAST IRONS As-cast austenitic and pearlitic microstructures High Cr white cast irons are ferrous alloys containing chromium between 12 and 30%. It is well documented that the microstructure of all hypoeutectic high Cr white iron alloys in the as cast condition consists of a network of M 7 C

The microstructure of the unalloyed iron generally consists of M C carbides (Alp and Wazzan, 2005). Figure 6 (Plates 1-7) shows that the cooling rate of the heat treated specimens have dramatic

high chromium white cast iron alloys, including their classifications, According to the microstructure, cast irons are classified as white, gray, 

This study presents the characterization of the microstructure of two alloys of white cast iron with high chromium containing 3.8 wt.

ABSTRACT THE MICROSTRUCTURE OF CAST IRON: In the experiment, the microstructures of five samples of different cast iron forms were observed and investigated under the optical

1 shows the microstructure of high Cr alloyed white cast iron in the as-cast state. The matrix structures can be pearlite, austenite, and martensite or some 

When the white cast iron is fractured, white coloured cracks are seen throughout because of the presence of carbide impurities. White cast iron is hard but brittle. It has lower silicon content and low melting point. The carbon present in the white cast iron precipitates and forms large particles that increase the hardness of the cast iron.

Structure of White Cast Iron Final microstructure of white cast iron looks like below; This microstructure depicts the Pearlitic matrix with a continuous thick cementite matrix formed in result of the eutectic reaction. The presence of a thick network is the main reason for the brittleness of respective microstructure. White Iron Types

06/07/  · Depending on the carbon content, white cast iron can be divided into eutectic cast iron (4.3 % C), hypoeutectic cast iron (<4.3 % C) and hypereutectic cast iron (>4.3 % C). The microstructure formation and transformation during solidification and cooling of such types of cast iron are explained in more detail below. Eutectic cast iron

3.The realization mechanism of as-cast microstructure (1) to determine the proper carbon content, one can ensure that 20% ~ 40% alloy carbides are obtained while leaving high carbon austenite, and the other can make alloy carbides of a single M 7 C 3 type with the proper amount of chromium.

High-chromium white cast irons are based on the iron–chromium–carbon system. These alloys present an as-cast microstructure composed of a 

White Cast Iron Microstructure. White iron is too brittle for use in many structural components, but with good hardness and abrasion resistance and relatively low cost, it finds use in such applications as the wear surfaces (impeller and volute) of slurry pumps, shell liners and lifter bars in ball mills and autogenous grinding mills, balls and

SCANDIAN C, BOHER C, DE MELLO J D B, et al. Effect of molybdenum and chromium contents in sliding wear of high-chromium white cast iron: The relationship between microstructure and wear[J]. Wear, , 267: 401-408. Article Google Scholar SARE I R, ARNOLD B K.

Most white cast irons contain less than 4.3% carbon, with low silicon contents to inhibit the precipitation Ferritic Malleable Cast Iron Microstructure.

Fig:- White Cast Iron Microstructure. The typical microstructure of white cast iron, consisting of dendrites of transformed austenite. (pearlite) in a white 

01/08/  · Eeffect of Boron addition on the microstructure and mechanical properties of ductile iron, GJS-500-7 grade was studied. Three cast batches with the Boron content of 10, 49 and 131ppm were cast in

white cast iron microstructure (Fig. 4) does not contain free graphite as does gray iron, malleable iron, or ductile iron. The fracture surface of this alloy appears white. In Fig. 4 the dark

The increase in Si and V contents led to significant modifications in the microstructures, being perlite the main phase, with the presence of 

Cast iron is an iron-carbon-silicon alloy used in numerous industrial applications, such as the base structures of manufacturing machines, rollers, valves, pump bodies and mechanical gears, among others. The main families of cast irons are: nodular cast iron, malleable cast iron, grey cast iron and white cast iron (Callister, 2006). Their

In white cast iron, the carbon content is combined chemically as carbide of iron. White cast iron has superior tensile strength and malleability. (most corrosive) element. The composition or microstructure of the iron affects the durability of the object because the rate of corrosion is dependent upon the amount and structure of the

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White cast irons are extremely wear-resistant yet brittle. They exhibit high hardness as a result of their microstructure containing large iron carbide 

For better understanding of cast iron microstructure development, it's better to understand the phase diagram of Fe-Fe 3 C. We mentioned earlier, Cast Iron has carbon percentage in between 2wt% to 6.67 wt%. This region of 4.67 wt% carbon is divided into two sections divided by eutectic reaction line observable at 4.3 wt % carbon.

The microstructure and mechanical properties of high chromium white cast iron with composition: 2,6÷3,4% C; 0,9÷1,1% Si; 0,8÷1,1% Mn; 1,0÷1,3% Mo; 

The microstructure of cast iron ABSTRACT White cast iron produces more cementite than graphite during solidification, it is a hard brittle alloy containing massive amount of fe3c. Alloyed white cast iron is used due to their hardness and wear resistance for abrasive wear. The name was given due to white fractured surface.