Results 151 to 160 of about 4,183 (192)

Occurrence and effect of casting skin in compacted graphite iron

International Journal of Cast Metals Research, 2016
Most iron castings retain their as cast surfaces because of their geometric complexity and to minimise the machining costs. However, the mechanical properties that are documented in standards (i.e. ASTM) are tested on fully machined test bars. Therefore, the effect of the as cast surface and subsurface features (commonly referred as ‘casting skin’) on ...
Sarum Boonmee, Doru M. Stefanescu
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Mechanism of bainitic transformation in compacted graphite cast irons

Metallurgical Transactions A, 1990
Samples of unalloyed compacted graphite cast iron (CGI) have been thermally treated to obtain a bainitic structure. Heat treatments consisting of various holding times at two different austenitizing temperatures and two different austempering temperatures have been carried out followed by metallographic observations of the resultant structures by ...
J.M. Guilemany, Núria Llorca-Isern
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Interaction of boron suboxide with compacted graphite cast iron

Ceramics International, 2011
Abstract The chemical interaction of boron suboxide (B 6 O) with compacted graphite cast iron (CGI) was investigated using static interaction diffusion couples between B 6 O and CGI at 700 °C, 900 °C and 1100 °C for 1 h. This interaction offers the possibility to evaluate the potential of B 6 O as a cutting tool.
Iakovos Sigalas, C.S. Freemantle, O.T. Johnson, Mathias Herrmann   +3 more
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Trace Elements in Nodular and Compacted Graphite in Cast Iron

Cast Metals, 1989
AbstractSecondary Ion Mass Spectrometry (SIMS) was used to qualitatively analyse the distribution of trace solutes in nodules, compacted graphite (CG) particles, and the surrounding matrix in Mg-treated cast iron. In both nodular- and compacted-graphite cast iron, Mg was clearly observed to be present in the graphite particles.
F. Weinberg, R. Boeri, G. Torga
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Metallographic structure of bainitic compacted graphite cast irons

Materials Characterization, 1991
Abstract The microstructural characteristics of austempered unalloyed compacted graphite cast irons have been studied. The material was subjected to a variety of bainitic treatments based on four different combinations of austenitizing and austempering temperatures, plus various periods of time at the temper temperature.
Núria Llorca-Isern, J.M. Guilemany
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Compacted graphite iron: Cast iron makes a comeback

JOM, 1994
Although compacted graphite iron has been known for more than four decades, the absence of a reliable mass-production technique has resulted in relatively little effort to exploit its operational benefits. However, a proven on-line process control technology developed by SinterCast allows for series production of complex components in high-quality CGI.
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Comparison of austempering transformation in spheroidal graphite and compacted graphite cast irons

International Journal of Cast Metals Research, 2006
AbstractMicrostructure observations and measurements of retained austenite content are reported as a function of austempering time at temperatures of 440, 370, and 300°C after austenitising at 900°C. The results of the experimental investigation indicate that at early stages of austempering (less than ∼8 min), compacted graphite irons usually show ...
R. Abdel-Karim, Mohamed Ramadan, I. Elmahalawi, Adel Nofal   +3 more
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High strength high toughness compacted graphite cast iron

Materials Science and Technology, 1995
AbstractIn the present paper, heat treatments were used to obtain upper and lower bainitic compacted graphite cast irons. The effects of the percentage of compacted graphite, the matrix structure, and the specimen thickness on the mechanical properties, fracture toughness, and fatigue crack growth rate of the irons were evaluated.
S.-C. Lee, Cheng-Hsun Hsu
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Fracture mechanics behaviour of austenitic compacted graphite cast iron

Journal of Materials Science, 1996
The fracture mechanics behaviour of high-nickel austenitic compacted graphite cast iron was studied and the effects of graphite morphology, alloying elements and specimen thickness on the mechanical properties, plane stress fracture toughness, and fatigue crack growth rate were evaluated. It was found that the graphite morphology, i.e.
Chih Kuang Hu, Cheng-Hsun Hsu, Shen Chih Lee   +2 more
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The Use of Compacted-graphite Cast Iron Returns containing Titanium and Aluminium in Production of Nodular- and Compacted-graphite Irons—Is it a Problem?

Cast Metals, 1989
As production of compacted-graphite irons (CG irons) has continued to rise, the use of denodularising (antispheroidising) elements (Ti, Al, Sb, Sn, etc) has led to the build-up of these deleterious...
M. Chisamera, L. Sofroni, I. Riposan
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