The Effect of the Substitution of Silicon by Aluminum on the Properties of Lamellar Graphite Iron

Aguado, Edurne; Ferrer, M.; Larrañaga, P.; Stefanescu, Doru M.; Súarez, Ramón

doi:10.1007/s40962-018-00303-y

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…A comparison of the hardness and calculated density at room temperature of the developed cast irons with related works in the field [18,20,21,25] is given in Figure 6. As can be seen, the 0-Al cast iron showed a density of 7.22 g/cm 3 and a hardness value of 235 ± 14 HV 10, which is in accordance with the typical range between 186-247 HV of the EN-GJL-HB195 grade cast iron.…”

Section: Hardness Of the Samplesmentioning

confidence: 99%

“…The complexity of the metallurgy of lightweight cast irons is not only due to the addition of Al, but also to other secondary elements such as Si. For example, Si is well known as an important influencing factor in the solidification of ductile cast irons [21]. As the addition of Al promotes the graphitization of the alloy, Si is employed to avoid metastable iron carbide solidification in gray cast iron [21].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Si is well known as an important influencing factor in the solidification of ductile cast irons [21]. As the addition of Al promotes the graphitization of the alloy, Si is employed to avoid metastable iron carbide solidification in gray cast iron [21]. In addition, Kasvayee et al [22] showed that graphite content, graphite nodule count and ferrite fraction were increased by increasing the Si content, resulting in an increase in yield strength.…”

Section: Introductionmentioning

confidence: 99%

“…In another work [20], the Fe-3.7C-0.5Al-1.0Si, Fe-3.4C-4.9Al-1.2Si and Fe-3.2C-6.2Al-1.2Si cast irons were studied, obtaining higher hardness values as a function of increasing Al content, 305 HV, 377 HV and 411 HV respectively. Aguado et al [21] improved the standard properties of Fe-C-Si grey cast irons, obtaining a strength of 466 MPa and hardness up to 260 HV for an iron with 3.08 wt. % C, 3.15% Al and 0.16 wt.…”

Section: Introductionmentioning

confidence: 99%

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Microstructural Evolution as a Function of Increasing Aluminum Content in Novel Lightweight Cast Irons

Obregon

Sánchez

Eguizabal

et al. 2021

Metals

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In the context of the development of new lightweight materials, Al-alloyed cast irons have a great potential for reducing the weight of the different part of the vehicles in the transport industry. The correlation of the amount of Al and its effect in the microstructure of cast irons is not completely well established as it is affected by many factors such as chemical composition, cooling rate, etc. In this work, four novel lightweight cast irons were developed with different amounts of Al (from 0 wt. % to 15 wt. %). The alloys were manufactured by an easily scalable and affordable gravity casting process in an induction furnace, and casted in a resin-bonded sand mold. The microstructural evolution as a function of increasing Al content by different microstructural characterization techniques was studied. The hardness of the cast irons was measured by the Vickers indentation test and correlated with the previously characterized microstructures. In general, the microstructural evolution shows that the perlite content decrease with the increment of wt. % of Al. The opposite occurs with the ferrite content. In the case of graphite, a slight increment occurs with 2 wt. % of Al, but a great decrease occurs until 15 wt. % of Al. The addition of Al promotes the stabilization of ferrite in the studied alloys. The hardness obtained varied from 235 HV and 363 HV in function of the Al content. The addition of Al increases the hardness of the studied cast irons, but not gradually. The alloy with the highest hardness is the alloy containing 7 wt. % Al, which is correlated with the formation of kappa-carbides and finer perlite.

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Section: Hardness Of the Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructural Evolution as a Function of Increasing Aluminum Content in Novel Lightweight Cast Irons

Obregon

Sánchez

Eguizabal

et al. 2021

Metals

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“…High carbon ratios in cast irons lead to higher brittleness values. In practical applications, cast irons are known as Fe-C-Si (iron, carbon, and silicon) alloys that contain up to 3.5 silicon and up to 4.4% carbon [10][11][12]. In addition to these elements, manganese and lower ratios of sulfur and phosphorus can also be encountered [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the microstructure, hardness, and compressive properties of TaC-reinforced lamellar graphite cast irons

Yakut

ÇİFTÇİ²

2023

European Mechanical Science

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Tantalum Carbide (TaC) reinforcement was made to lamellar graphite (gray) cast irons that were produced in the physical conditions of a foundry at reinforcement ratios of 0%, 0.025%, 0.155%, and 0.285%. Samples complying with standards were prepared using the TaC-reinforced lamellar graphite (gray) cast iron alloys that were produced, and Brinell hardness tests, compressive strength tests, and microstructural analyses were conducted. According to the test results, the highest average Brinell hardness value was found as 231 HB in sample A which was reinforced at a ratio of 0.025%. In general, as the reinforcement ratio increased, there was an increase in the hardness test measurement results. The highest average compressive strength value was found as 949 MPa in sample C which was reinforced at a ratio of 0.285%. In general, as the reinforcement ratio increased, there was an increase in the compressive strength values. The results of the microstructural analyses showed that the reinforcement material was dispersed into the matrix.

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High-Temperature Oxidation Behavior of Spheroidal Graphite Cast Irons Containing up to 7.5 wt% Aluminum at 750 °C in Static Air

Khalvan

Divandari

2022

Oxid Met

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The Effect of the Substitution of Silicon by Aluminum on the Properties of Lamellar Graphite Iron

Cited by 8 publications

References 3 publications

Microstructural Evolution as a Function of Increasing Aluminum Content in Novel Lightweight Cast Irons

Microstructural Evolution as a Function of Increasing Aluminum Content in Novel Lightweight Cast Irons

Investigation of the microstructure, hardness, and compressive properties of TaC-reinforced lamellar graphite cast irons

High-Temperature Oxidation Behavior of Spheroidal Graphite Cast Irons Containing up to 7.5 wt% Aluminum at 750 °C in Static Air

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