scholarly journals The Influence of Titanium as a Desferoidizing Element on the Stability of Production of Magnesium Cast Irons with Compacted Graphite

2021 ◽  
Vol 43 (4) ◽  
pp. 654-666
Author(s):  
V. Aulin ◽  
V. Kropivny ◽  
O. Kuzyk ◽  
O. Lyashuk ◽  
M. Bosyi ◽  
...  
Keyword(s):  
Cast Irons ◽  
Compacted Graphite ◽  
The Stability

Relationship between dynamic and static toughness of flake and compacted graphite cast irons

2000 ◽  
Vol 282 (1-2) ◽  
pp. 115-122 ◽  
Author(s):  
Cheng-Hsun Hsu ◽  
Shen-Chih Lee ◽  
Yih-Hsun Shy ◽  
Wei-Tang Chiou
Keyword(s):  
Cast Irons ◽  
Compacted Graphite

Thermal analysis of compacted graphite cast irons containing various levels of Mg and S

1999 ◽  
Vol 11 (5) ◽  
pp. 381-386 ◽  
Author(s):  
S. Rodríguez ◽  
M. Castro ◽  
M. Herrera ◽  
J. Méndez ◽  
M. Méndez ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Cast Irons ◽  
Compacted Graphite

Properties of austempered, low-manganese compacted-graphite cast irons

Cast Metals ◽  
1994 ◽  
Vol 7 (3) ◽  
pp. 143-151 ◽  
Author(s):  
A. L. Rimmer ◽  
R. Elliott
Keyword(s):  
Cast Irons ◽  
Compacted Graphite

Digital Image Correlation Techniques for Analysing the Deformation Behaviour of Compacted Graphite Cast Irons on a Microstructural Level

2011 ◽  
Vol 70 ◽  
pp. 171-176 ◽  
Author(s):  
Torsten Sjögren ◽  
Fredrik Wilberfors ◽  
Monika Alander
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Strain Field ◽  
Deformation Behaviour ◽  
Image Correlation ◽  
Cast Irons ◽  
Graphite Phase ◽  
Compacted Graphite ◽  
Graphite Particles ◽  
Correlation Techniques

Digital image correlation techniques (DIC) have been used in this study to reveal how different phases (graphite, ferrite and pearlite) of compacted graphite cast irons (CGI) accommodate strains at loading. A DIC-software was used to analyse sets of successively acquired images. The images were acquired with a light optical microscope revealing the microstructure of polished and etched CGI materials at different load levels. Five CGI materials, having percentages of pearlite in the range 35 to 90 area%, were included in the study. Apart from the different matrix constituents (ferrite and pearlite) the nodularity was altered and varied from 5% to 65%. It is concluded from this study that the different phases in CGI are affected by the global strain and load to a greater or less extent. The graphite phase appears to accommodate high strains but, due to fracture of the graphite particles at relatively low strains, the resulting high strain values show the opening up of graphite cavities. The ferrite phase is subjected to a strain concentrating effect of the graphite phase and with a low nodularity, i.e., with graphite particles that are stretched out and interconnected, the effect becomes more pronounced resulting in high strains. The pearlitic phase is the strongest of the constituents within the microstructure and the lowest local strains are observed in this phase. The study shows that DIC strain-field images reveal the microstructural strain level distribution for the CGI materials. The future outlook is to use these sets of strain-field images for verification of micro mechanical finite element analysis on a microstructural scale of CGI materials.

The Strange Case of Compacted Graphite Iron: A Remarkable Option with Unique Material Properties or an Unusable Alloy?

2017 ◽  
Vol 754 ◽  
pp. 67-70
Author(s):  
Slobodna Mitrovic ◽  
Emanuele Savini ◽  
Dragan Dzunic
Keyword(s):  
Material Properties ◽  
Compacted Graphite Iron ◽  
Cast Irons ◽  
Practical Applications ◽  
Compacted Graphite ◽  
Wide Range ◽  
Unique Material ◽  
Material Choice ◽  
Strength And Stiffness ◽  
Grey Iron

The Compacted Graphite Iron (CGI) represents an example of material with remarkable and unexplored properties, especially in terms of resistance and machinability. With better strength and stiffness than several cast irons, as Grey Iron, and better castability, machinability and thermal conductivity than others, as Ductile Irons, this alloy would be, at least theoretically, the perfect material choice for a wide range of practical applications. Nevertheless, discovered more than 50 years ago, it has failed to establish itself in a definitive way. This review intends to highlight benefits and limits in choosing CGI in casting.

scholarly journals High Temperature Strength of Cast Irons for Cylinder Heads

2018 ◽  
Vol 925 ◽  
pp. 385-392 ◽  
Author(s):  
Wilson Luiz Guesser ◽  
Carlos S. Cabezas ◽  
Luis Carlos Guedes ◽  
André M. Zanatta
Keyword(s):  
High Performance ◽  
Tensile Tests ◽  
Gray Iron ◽  
Fracture Mechanisms ◽  
High Temperature Strength ◽  
Strength Increase ◽  
Cast Irons ◽  
Compacted Graphite ◽  
Graphite Structure ◽  
Iron Grade

Hot strength and fracture mechanisms in high quality cast irons were studied, comparing the standard gray iron Grade 300, alloyed with Mo, typically used for cylinder heads in high power engines, with other two materials: one gray iron Grade 300, obtained through graphite refinement and one compacted graphite iron, Grade 450. In these last two materials, the strength increase was obtained by changing the graphite structure, not by hardening the matrix. The experimental results with tensile tests carried out up to 500 °C show that the different strengthening mechanisms, use of Mo or modification of the graphite structure, are both efficient for increasing the strength at room temperature as well as at high temperatures. The CGI has a lower strength reduction with temperature than the gray irons, which shows the significant impact of the compacted graphite shape in reducing the notch effect. These results show the enormous potential of CGI in cylinder heads for high-performance engines.

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