Microstructure White Cast Iron It is difficult to cool thick castings fast enough to solidify the melt as white cast iron all the way through. However, rapid 

White cast iron displays white fractured surface due to the presence of cementite. With a lower silicon content (graphitizing agent) and faster cooling rate 

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

Typical microstructure of class I type A nickel- chromium white cast iron. Page 19. ❖. The optimum condition of a nickel-chromium white iron alloy depends 

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

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

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.

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

The experimental results indicate that the cast irons comprise a dendritic matrix and interdendritic eutectic borides M2B and M′0.9Cr1.1B0.9 

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

The chemical composition of the cast iron is Fe-3.52C-2.51Si-0.49Mn-0.15Mo-0.31Cu wt%. All samples are etched using 2% nital. Colour micrographs are produced by 

The as-cast microstructure of Fe-Cr-C-V white irons consists of M7C3 and vanadium rich M6C5 carbides in austenitic matrix.

The microstructure of white cast iron contains cementite (white) and pearlite. It contains interdendritic cementite (white) which sometimes has a Widmanstiitten (‘spiky’) appearance.

8] FILIPOVIC, M., KAMBEROVIC, K., KORAC, M., et al., “Microstructure and mechanical properties of. Fe–Cr–C–Nb white cast irons”, Materials and Design, v. 47, 

chromium cast iron. They found that tungsten can effectively improve the hardness of the matrix and wear resistance of the high chromium cast iron. CHUNG, et al[3], investigated the effect of alloying titanium addition on the microstructure and wear resistance of hypereutectic high chromium white cast iron. The results showed that a fine

Modi Mechanical Engineering Tutorials

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

Cementite is hard and brittle and dominates the microstructure of white cast iron. Thus, white cast iron is hard and brittle and has a white 

Abstract： Under the actual production condition of the traditional technique, it is easy that high chrome white cast iron grinding media forms more internal stress, which is lead to disabled main reason in production and employ condition.The importance of grinding ball cast microstructure is known by analysis hot working whole process, that is, required cast the microstructure can meet the

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

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

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

21/03/  · This microstructure is of white cast iron with 3-3.5 wt% C. In this microstructure, we clearly see two phases appearing in the microstructure. While you perform etching of material,

26/03/  · White Cast Iron Microstructure Development. For a general microstructure development in high carbon ferrous material and to understand the effect of equilibrium

Apr 24, - White Cast iron is used in wear resistant applications like Cusher and ginding mill liners. Chromium and nickel iron are alloying types of 

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 

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

The term cast iron refers to iron-carbon-silicon alloys that contain 2.5-4 % carbon and usually 1-3 % silicon. In grey irons, the carbon is present as graphite; in white cast iron it is present in the form of iron carbide and alloy carbides. Cast iron has good castability and machinability, as well as moderate mechanical properties.

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

The solidification behavior of Fe-Cr-C white cast iron under pressure control mechanism of eutectic structure and carbide is established. The KmTBCr26 (GB/T8263- ) cast iron was prepared by liquid die forging at the pressure of atmosphere to 160 MPa. Effect of titanium on the as-cast microstructure of hypereutectic high chromium cast