Development of a New Route for Fe-C-Al Cast Iron Production

Shaha, S.K.; Dyuti, S.; Haque, Md. Mohafizul; Maleque, Md. Abdul

doi:10.3923/jas.2010.1196.1199

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…First, pig iron and mild steel were charged together in the furnace and heated up to about 1,350°C. The chemical composition of both Fe‐C‐Al and Fe‐C‐Si grades cast iron is shown is Table I details on the moulding and casting of Fe‐C‐Al cast iron (CI) can be found elsewhere (Shaha et al , 2010a, b). After casting, the metallographic samples were prepared following standard metallographic technique and the microstructural study was performed using field emission scanning electron microscope (FESEM).…”

Section: Methodsmentioning

confidence: 99%

“…The conventional grade Fe‐C‐Si cast iron has a complicated and multiphase structures whose property depends not only on the shape and size of the graphite flakes, but also on the morphology of the matrices. The mechanical and chemical properties of cast iron can be widely changed by alloy element addition, heat treatment or controlling the solidification of the alloy (Rivera et al , 2004; Bartocha et al , 2005; Xing et al , 2007; Shaha et al , 2010a, b). The wear property of gray cast iron mainly depends on the properties of the matrix and hence, by modifying the matrices of the gray cast iron it is possible to change the wear behaviour of the cast iron (Terheci et al , 1995; Xia et al , 2007; Buni et al , 2007).…”

Section: Introductionmentioning

confidence: 99%

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The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

Maleque

Sugrib

2013

Industrial Lubrication and Tribology

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PurposeThe aim of this paper is to study the tribological behaviour of Fe‐C‐Al cast iron at different temperatures using universal pin‐on‐disk machine.Design/methodology/approachThe cold set resin bonded sand mould casting process was employed to develop Fe‐C‐Al cast iron and Fe‐C‐Si cast iron. The microstructures of materials were studied using field emission scanning electron microscope. The wear and friction tests were conducted using universal pin‐on‐disk machine at 25°C, 100°C, 200°C and 300°C temperature. The worn surface was characterized using scanning electron microscopy.FindingsThe lower wear rate was found for Fe‐C‐Al cast iron compared to Fe‐C‐Si cast iron and delamination type wear morphology was observed in both types of cast iron materials. The results also showed that the friction coefficient value of Fe‐C‐Al cast iron was lower than that of Fe‐C‐Si cast iron at different temperatures. It can be concluded that the overall tribological behaviour of Fe‐C‐Al cast iron at higher temperatures was better than conventional Fe‐C‐Si cast iron.Originality/valueThe information on the development and tribological properties of the Fe‐C‐Al cast iron at different temperatures is scarce in the literature. The special type of cold set resin bonded sand mould was used for casting this Fe‐C‐Al cast iron material. Therefore, the current study is quite new and it is hoped that it will provide a high value to the automotive and other engineering researchers for the application of this material.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

Maleque

Sugrib

2013

Industrial Lubrication and Tribology

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“…Aluminium is found as a good replacement of silicon in ductile cast irons, with real benefits such as higher strength and hardness, as well as better wear and oxidation resistance [26,27], but its anti-nodularising effect in Mg-treated cast irons must be considered. A high sensitivity must also be expected to cause graphite degeneration in the casting surface layer.…”

Section: Structure Characteristics In the Casting Surface Layermentioning

confidence: 99%

Control of the Mg-Treated Iron Casting Skin Formation by S-Diffusion Blocking at the Metal–Mould Interface

et al. 2020

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Having established that sulphur presence in the mould materials appears to have an important contribution in graphite degeneration at least in the casting surface layer, a research program is undertaken to explore the possible beneficial effect of sulphur diffusion blocking at the metal–mould interface. Test samples, with and without a thin steel sheet (up to 3 mm thickness) application on the inner surface of the mould cavity, before iron melt pouring, are considered for structure analysis. A higher nodulizing potential (0.048% Mgres, 0.015% Ceres, and 0.006% Lares) decreases the occurrence of surface graphite degeneration in castings obtained in rigid chemically bonded resin sand moulds, using P-toluol sulfonic acid (PTSA) hardener (S-including), but it is not enough to avoid this phenomenon (200–400 μm skin in present experimental conditions). The casting skin appears to have different values, depending on the evaluation technique (un- and Nital-etching direct measurement, or graphite parameters variation on the casting section). In the presence of a thin steel sheet at the metal–mould interface, the casting skin thickness decreases or is just excluded. It is supposed that it acts as a barrier, blocking S-diffusion from the mould media into the iron melt. Without this S-diffusion, the graphite degeneration in the casting surface layer could be avoided, or at least diminished. For industrial application, the increasing of residual content of nodulizing elements is a limited solution, and it is recommended to use barriers to block S transfer on the mould/metal surface, such as dense coatings or coatings with desulphurization capacity.

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“…This suggests that the composition containing 3.74 wt.% Al may not be so suitable for applications requiring a good combination of strength and toughness compared with the composition containing 2.29 and 3.02 wt.% Al. It can be argued that the generally enhanced nodules count facilitated by the aluminium addition, help serve as crack arrester, which increases the ductile iron resistance to crack propagation thereby leading to an improvement in the toughness [33].…”

Section: Mechanical Properties Of the Al-ductile Cast Iron Producedmentioning

confidence: 99%

Structural characterization and mechanical properties of rotary melting furnace processed aluminium alloyed ductile irons

Adebayo

Alaneme

Oyetunji

2018

Journal of Taibah University for Science

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The microstructural characteristics and mechanical properties of rotary melting furnace processed aluminium alloyed ductile irons were investigated in this study. This was aimed at developing high performance -low material and processing cost ductile irons, suitable for the production of automobile components. Different compositions of the alloys were processed containing 1-4 wt.% aluminium. X-ray diffractometry, optical, scanning electron microscopy and mechanical properties measurements, were used to characterize the alloys. The results show that the ductile irons consists essentially, nodular and vermicular graphite-type distributed in a predominantly pearlite -ferrite matrix structures which attest to the viability of rotary furnace melt processing for ductile iron production. The nodule count were observed to increase with increase in Al wt.% but nodule sizes and degree of sphericity decreased with increase in Al wt.%. The mechanical properties of the ductile irons increased with increase in Al wt.%, except the ductility which decreased slightly with increase in Al wt.%.

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Development of a New Route for Fe-C-Al Cast Iron Production

Cited by 12 publications

References 3 publications

The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

The tribological behaviour of Fe‐C‐Al cast iron – effect of temperature

Control of the Mg-Treated Iron Casting Skin Formation by S-Diffusion Blocking at the Metal–Mould Interface

Structural characterization and mechanical properties of rotary melting furnace processed aluminium alloyed ductile irons

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