Ductile iron - Wikipedia
Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron [1] and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis. [2]
Spheroidal Graphite Cast Iron - an overview - ScienceDirect
Spheroidal graphite (SG) cast iron has excellent toughness; it has higher elongation and is used widely, for example, in crankshafts. Unlike malleable iron, nodular iron is produced directly from the melt and does not require heat treatment.
SG Iron Casting Grades and Standards - Iron foundry
SG Iron is known as Spheroidal Graphite Iron, and also known as Ductile Cast Iron, Nodular Cast Iron, or Spherulitic Graphite Cast Iron. SG Iron is a type of cast iron that has been treated while molten with an element such as magnesium or cerium to induce the formation of free graphite as nodules or spherulites.
Spheroidal Graphite Cast Iron - an overview - ScienceDirect
Nodular, or spheroidal graphite (SG) cast iron contains graphite spheroids in the as-cast state, by the addition of cerium and/or magnesium to the iron, as illustrated in Fig. 3.30. These SG irons can be made with a pearlite matrix or ferrite with appropriate heat-treatment, or with acicular or austenitic matrix when suitably alloyed, and they ...
Mechanical properties of graphite flakes and spherulites measured …
2009年8月1日 · Spheroidal graphite (SG) iron is a commercially important cast iron, where magnesium is added to facilitate spheroidization of graphite [1]. In a recent work, we have established the mechanisms of formation of spheroidal and flaky forms of graphite during solidification through micro Raman spectroscopy and electron probe microanalysis [2] .
Spheroidal Graphite Cast Iron Grades, Properties, Composition ...
Spheroidal Graphite Cast Iron Grades, Properties, Composition, Microstructure, Density and Castings. Spheroidal graphite cast iron can be short as S.G. cast iron, and also can be called as ductile iron, or nodular graphite iron. Therefore, SG cast iron has completely same grades and all mechanical and chemical properties as ductile iron.
Understanding the Metallurgy of Spheroidal Graphite Cast Iron ...
2024年7月13日 · The spheroidal, or nodular, form of graphite in this iron gives it excellent strength, ductility, and toughness, distinguishing it from traditional gray cast iron. This article delves into the metallurgy of Spheroidal Graphite Cast Iron, focusing on its composition and microstructure analysis.
Chunky Graphite in Ferritic Spheroidal Graphite Cast Iron: …
2019年9月10日 · Ferritic spheroidal graphite cast iron (SGI) materials have a remarkable technical potential and economic impact in modern industry. These features are closely related to the question of how the cast materials can be produced without structural defects and graphite degenerations such as, for example, chunky graphite.
Microstructural Analysis of Spheroidal Graphite Iron
2024年10月12日 · Spheroidal graphite iron (SG iron), also known as ductile iron, is a type of cast iron known for its unique microstructure, which significantly influences its mechanical properties. The microstructure of spheroidal graphite iron is characterized by spherical graphite nodules dispersed in a matrix of ferrite, pearlite, or a combination of both.
Spheroidal Graphite Cast Irons (or Ductile Cast Iron)
2018年8月21日 · A model proposed to describe the grey cast irons is a steel with cavities filled with graphite. If this lamellar graphite is transformed into spheroidal graphite, mechanical properties will improve. This chapter is, for that reason, dedicated to the cast irons with spheroidal graphite, and particularly to the austempered ductile irons (ADI).