on the solidification of compacted and spheroidal graphite irons

Iron Types (page 1), Gray Ductile Irons

Flake Graphite Types Gray cast iron is by far the most common of the cast irons. Next to steel, it is the most widely used engineering alloy. In the 1st century of the of the automobile industry, it was the material of choice for cylinder blocks, heads and many other

Compacted Graphite Iron: Part One :: Total Materia Article

Compacted graphite iron (CGI) along with lamellar graphite iron and spheroidal graphite iron define the three main classes of cast iron according to morphology. CGI displays very useful properties for a range of engineering applications with the tensile strength and elastic modulus being considerably higher than grey cast irons (75% and 35% respectively).

Effect of Antimony and Cerium on the Formation of

Thermal analysis is applied to the study of the formation of chunky graphite (CHG) in heavy-section castings of spheroidal graphite cast irons. To that aim, near-eutectic melts prepared in one single cast house were poured into molds containing up to four large cubic blocks 30 cm in size. Four melts have been prepared and cast that had a cerium content varying in relation with the

Microstructure Formation During Solidification and Solid

Compacted graphite iron (CGI) is rapidly becoming an attractive alternative material for engine components in the automotive industry, replacing lamellar graphite iron (LGI) in applications where h 2010 (English) In: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 23, no 2, p. 97-110 Article in journal (Refereed) Published

What is spheroidal graphite cast iron?

Spheroidal graphite cast iron is a fancy way of saying "ductile iron." For a full description of this material, you can visit our "What is ductile iron" page. These castings are also known as S.G. iron castings or just S.G. iron. The fancy name "spheroidal graphite cast

Revisiting Thermal Analysis of Hypereutectic Spheroidal

This study deals with early solidification of hypereutectic cast irons at varying carbon content and roughly constant alloying additions. Thermal analysis of such alloys shows that the start of the eutectic reaction occurs at a nearly constant temperature for mildly hypereutectic compositions. A similar trend is observed with more hypereutectic compositions but at a higher starting temperature

Effects of impurities on graphite shape during solidification of spheroidal graphite

to suggest a mechanism for spheroidal graphite degeneracy appearing during solidification. It was thought of interest to first consider the various standard forms of graphite in lamellar, spheroidal and compacted graphite cast irons, including works on synthetic Fe-C-

Effect of Antimony and Cerium on the Formation of

Effect of Antimony and Cerium on the Formation of Chunky Graphite during Solidification of Heavy-Section Castings of Near-Eutectic Spheroidal Graphite Irons. (2009) Metallurgical and Materials Transactions A, 40 (3). 654-661. ISSN 1073-5623

Study of the solidification structure of compacted

Abstract This investigation focuses on the study of the solidification mechanism of compacted graphite cast iron (CGI). The solidification macrostructure was revealed in cast samples using a special technique known as direct austempering after solidification (DAAS).

Influence of Section Thickness on the Thermal Conductivity of Compacted Graphite

graphite and consequently it is a critical factor in defining the thermal conductivity. The existence of spheroidal graphite within compacted graphite in the thinnest section should be considered especially in thermally loaded applications. Keywords:

A Study on the Tensile Behavior of Spheroidal and

A Study on the Tensile Behavior of Spheroidal and Compacted Graphite Cast Irons Based on Microstructural Analysis By N. Radović, A. Morri and C. Fragassa Abstract Spheroidal graphite cast iron (SGI) is mainly used in the transportation industry for

INVESTIGATION OF IMPACT OF AMOUNT AND TYPE

The solidification step has an important impact on products internal structure and thereby on the mechanical properties in giving form by casting methods. Because of its excellent mechanical properties, the microstructure consisted of homogeneous fine-grained graphite is a desired product microstructure.

The metallurgy and tensile mechanical properties of

2016/11/29(2003). The metallurgy and tensile mechanical properties of thin wall spheroidal graphite irons. International Journal of Cast Metals Research: Vol. 16, Proceedings of the Seventh International Symposium on the Science and Processing of Cast Iron, pp. 319-324.

Effect of Cooling Rate on the Eutectoid Transformation in Compacted Graphite

spheroidal graphite irons. Introduction As is the case of other graphitic cast irons, the mechanical properties of compacted graphite irons (CGI) depend on their microstructure, i.e. graphite shape and matrix constituents. As for other irons, graphite shape in is

[PDF] Revisiting Thermal Analysis of Hypereutectic

DOI: 10.1007/s11661-020-06005-7 Corpus ID: 221985793 Revisiting Thermal Analysis of Hypereutectic Spheroidal Graphite Cast Irons article{CastroRomn2020RevisitingTA, title={Revisiting Thermal Analysis of Hypereutectic Spheroidal Graphite Cast Irons

On the Solidification of Compacted and Spheroidal Graphite Irons

On the Solidification of Compacted and Spheroidal Cast Irons v ACKNOWLEDGEMENTS I express my sincere gratitude to: My supervisor Attila Diszegi, for giving me this opportunity and for being a constant source of inspiration, guidance and support. Juan Carlos Hernando, for his friendship and valued advices and discussions.

Cast irons and their Classification – IspatGuru

2016/1/10Cast irons and their Classification satyendra January 10, 2016 0 Comments cast iron, cementite, ductile iron, eutectic, Ferrite, graphite, gray iron, malleable iron, SG iron, white iron, Cast irons and their Classification The term 'cast iron' represents a large family of ferrous alloys.

Solidification Macrostructure of Compacted Graphite

2014/11/13The results were compared with those obtained earlier by Rivera et al on spheroidal and flake graphite cast irons. The results show that, similarly to spheroidal and flake graphite irons, the solidification of compacted graphite iron is dominated by the presence of relatively large grains of austenite that can be observed by the naked eye.

Understanding compacted graphite iron solidification

While the manufacture of compacted graphite (CG) iron castings has seen significant expansion over the recent years, the growth of CG during iron solidification is still not fully understood. In this work, effort was expanded to experimentally reveal the evolution of graphite shape during early solidification and its relationship to the solid fraction.

Revisiting Thermal Analysis of Hypereutectic Spheroidal

This study deals with early solidification of hypereutectic cast irons at varying carbon content and roughly constant alloying additions. Thermal analysis of such alloys shows that the start of the eutectic reaction occurs at a nearly constant temperature for mildly hypereutectic compositions. A similar trend is observed with more hypereutectic compositions but at a higher starting temperature

Cast irons and their Classification – IspatGuru

2016/1/10Cast irons and their Classification satyendra January 10, 2016 0 Comments cast iron, cementite, ductile iron, eutectic, Ferrite, graphite, gray iron, malleable iron, SG iron, white iron, Cast irons and their Classification The term 'cast iron' represents a large family of ferrous alloys.

Solidification Chronology of the Metal Matrix and a Study

An improved understanding of solidification of compacted graphite iron (CGI) is necessary to predict shrinkage related casting defects. Spheroidal graphite is not only found in ductile iron (SGI) but usually also in CGI, but its characteristics and role in this material is less understood.

Effect of Cooling Rate on the Eutectoid Transformation in Compacted Graphite

spheroidal graphite irons. Introduction As is the case of other graphitic cast irons, the mechanical properties of compacted graphite irons (CGI) depend on their microstructure, i.e. graphite shape and matrix constituents. As for other irons, graphite shape in is

Simulation of thermal analysis applied to the description of

2016/11/29This paper reports firstly an experimental study on the solidification of hypereutectic spheroidal graphite cast irons with various amounts of inoculant added. Thermal analyses were performed for each melt preparation and relations between a few characteristics of the cooling curves and the final microstructure were looked for.

Kinetics of graphite expansion during eutectic

The LDA device was used to study the differences in the solidification mechanisms of irons with different graphite morphologies (lamellar, compacted/vermicular and spheroidal) at carbon equivalent in the range of 37–44%. The analysis included the LDA and TA

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