white cast iron microstructure

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

The microstructure of an as-cast 28 wt.% Cr-2.6 wt.% C iron with 0-10 wt.% W addition was studied by Imurai et al. [5], and it was observed that W promoted the formation of W-rich M 7 C 3, M 6 C and M 23 C 6 carbides. Mousavi et al. [6] performed a wear test on a (27-28) wt.% Cr-3 wt.% C- (0-2.5) wt.% W high chromium white cast iron.

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

Most cast irons have a chemical composition of 2.5-4.0% carbon, 1-3% silicon, and the remainder is iron. Grey cast iron has less tensilestrength and shock resistance than steel, but its compressive strength is comparable to low and medium carbon steel. White cast iron displays white fractured surface due to the presence of cementite.

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

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

The microstructure of hypoeutectic white cast irons containing between 15% and 30% Cr is mainly composed of eutectic carbides in an austenite matrix, 

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

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, 

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

Melting Point of White Cast Iron – Ni-Cr-HC Martensitic White Cast Iron. Melting point of martensitic white cast iron (ASTM A532 Class 1 Type A) steel is around 1260°C. In general, melting is a phase change of a substance from the solid to the liquid phase. The melting point of a substance is the temperature at which this phase change occurs

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

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,

For white and Gray, cast iron combines at 2075 F and 2230 F respectively. It is not an alloy or a simple metal but it is a collection of compounds mix together chemically and mechanically.

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

Cast irons typically contain 2-4 wt% of carbon with a high silicon concentrations and a greater concentration of impurities than steels. The carbon equivalent (CE) of a cast iron helps to distinguish the grey irons which cool into a microstructure containing graphite and and the white irons where the carbon is present mainly as cementite.

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

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

When it's annealed, it becomes malleable cast iron. THE MICRISTRUCTURE OF WHITE CAST IRON • A fracture surface of these alloy has a white appearance and it is 

A white cast iron with nano-eutectic microstructure was prepared by an aluminothermic reaction casting. Microstructures of the cast iron were investigated by optical microscope (OM), electron probe micro-analyzer (EPMA), scanning electron microscope (SEM) and X-ray diffraction (XRD). Mechanical properties of the cast iron were tested.

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

Request PDF | Effect of Casting Pressure on Microstructure and Anti-abrasion Property of KmTBCr26 White Cast Iron | The use of liquid die forging technology for alloy casting can optimize the

As seen in Fig: 2, the microstructure of white cast iron is completely different from gray cast iron. In this microstructure, there are no graphite flakes present. The bigger, dark gray, rounded

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

The metallographic specimen preparation process formicrostructural investigations of cast iron specimens usually consists of five stages: sampling, cold or hot mounting, grinding, polishing, and etching with a suitable etchant to reveal the microstructure. Each stage presents particular problems in the case of cast iron.

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 the high boron white cast iron comprises a dendritic matrix and interdendritic eutectic boride M 2 B in as-cast condition, where M represents Cr, Fe, or Mn. The boride morphology is much like that of carbide in high chromium white cast iron, but its microhardness is higher than carbide.

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 

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.

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