This project is to investigate mechanical properties and microstructure of white cast iron using sand casting. There are three objectives for this project which are firstly to study the processing method of gray cast iron to produce white cast iron. Secondly, to investigate the microstructure and hardness of white cast iron compared to gray cast

5094, 1994. white cast iron, Wear, 166, pp. 197-201, 1993. of Materials Science Letters, 12, pp. 615, 1993. balls, Journal of Materials 

There are also differences in composition—cast iron contains 2–4% carbon and other alloys, and 1–3% of silicon, which improves the casting performance of the 

2.As-cast microstructure design. The organization is dependent only on the chemical composition and cooling rate and is assured by the following major technical measures. Increasing carbon content can increase the volume of carbides in the microstructure on the one hand. On the other hand, it can avoid the low carbon martensite matrix left

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Figure 1: High chromium iron microstructures in the as-cast; (a) with austenitic matrix mi crostructure, (b) With austenitic- martensitic matrix microstructure. Both at 500 X [ 19 ].

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 of white CI contains massive cementite (white) and pearlite. White cast iron derives its name from the white, crystalline crack surface observed when a casting fractures. Most white cast irons contain less than 4.3% carbon, with low silicon contents to inhibit the precipitation of carbon as graphite.

Other articles where white iron is discussed: cast iron: either so-called gray iron or white iron, the colours shown by fracture. Gray iron contains more silicon and is less hard and more machinable than is white iron. Both are brittle, but a malleable cast iron produced by a prolonged heat treatment was developed in France in the 18th century,

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; 

Microstructure of White cast Iron A typical microstructure of White cast iron with composition in Hypo-eutectic region is shown below; 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.