Processing Techniques and Productions of Ductile Iron: A Review J.O. Cast irons are alloys of iron, carbon and silicon (may have over 2% carbon and 1-3% silicon), and may include specific amounts of other elements to achieve definite characteristics.
This results in a major improvement in toughness and strength. The bainite is obtained by isothermal transformation of the austenite at temperatures below that at which pearlite forms. Lower content of Mg or Ce 3. Metals and alloys. (ductile cast iron) 2 Ductile cast iron as a material In contrast to grey cast iron, where the free graphite is present in lamellar form, the free graphite in ductile (malleable) cast iron is spherical in shape (sphe-roidal graphite). High carbon steel is very hard wearing, but less ductile or malleable. 14 Chapter 11 -27 Types of Cast Iron Compacted graphite iron (CGI) 1. Cast iron is hard and easily cast into shapes, but brittle. items made from each of these metals? Malleable iron – the result of annealing white iron castings, 800º-900º C – cementite→graphite precipitates, clusters or rosettes – more ductile. two. Non-ferrous properties. Malleable Cast Iron Ppt Manufacturers, Factory, Suppliers From China,
Oluwasegun Abstract—Ductile cast irons are materials having strength, impact toughness and ductility comparable to those of many grades of steel while exceeding by far those of standard gray irons.
EF420 Lecture 9 Overview of cast iron Iron with 1.7 to 4.5% carbon and 0.5 to 3% silicon Lower melting point and more fluid than steel (better castability) Low cost material usually produced by sand casting A wide range of properties, depending on composition & cooling rate (a) Grey cast iron, (b) White cast iron, (c) Ductile cast iron (d) Malleable cast iron, (e) Nodular cast iron, (f) Meehanite cast iron, (g) Alloy cast iron and The chemical composition, extraction, properties and general applications of these types of cast iron are discussed as under. Non-ferrous metals don’t contain iron. This form of graphite favours the elasticity of the cast iron and increases its inherent strength.
The latest breakthrough in cast irons is where the matrix of spheroidal graphite cast iron is not pearlite, but bainite. Welding-cast-iron deals with classes known as Gray, Malleable and Nodular (or Ductile) according to typical appearance of their microstructure, which affects their properties. Suggest . Cast irons. Unit 3Materials and their working properties . C: 3.1-4.0%, Si: 1.7-3.0% 2.