Comparison of Microstructure, Yield Strength, Tensile Strength, and Modulus of Elasticity between Gray Cast Iron and Nodular Cast Iron

Darmawan, Agung Setyo; Anggono, Agus Dwi; Yulianto, Agus; Febriantoko, Bambang Waluyo; Masyrukan,; Hamid, Abdul

doi:10.4028/p-2094w8

Cited by 3 publications

(3 citation statements)

References 32 publications

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“…Nodular cast iron, also known as ductile cast iron, contains graphite in the form of nodules [6][7][8]. The spherical shape of graphite does not cause high-stress concentrations like flake graphite.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shielded Metal Arc Welding on Microstructure, Hardness, and Tensile Strength of Nodular Cast Iron

Darmawan,

Anggono,

Yulianto

et al. 2024

Advances in Science and Technology

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Welding plays an important role in the component joining process. This study aimed to determine the effect of shielded metal arc welding on the microstructure, hardness and tensile strength of nodular cast iron. Shielded metal arc welding was performed using AWS A5.15 Eni-CL electrodes. Scanning Electron Microscope is used for metallographic observation. Hardness testing was carried out on base metal, heat-affected zone, and weld metal. This hardness test uses the Vickers technique. Tensile testing was carried out to determine the effect of welding on tensile strength. The results of the metallographic investigation showed the disappearance of the ferrite phase and the appearance of the ledeburite phase in the heat-affected zone and weld metal. The area with the highest hardness occurs in the heat-affected zone while the lowest hardness occurs in the weld metal. There is a decrease in the tensile strength of nodular cast iron due to the welding process.

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Section: Introductionmentioning

confidence: 99%

Effect of Shielded Metal Arc Welding on Microstructure, Hardness, and Tensile Strength of Nodular Cast Iron

Darmawan,

Anggono,

Yulianto

et al. 2024

Advances in Science and Technology

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“…Although it offers many advantages, there are several disadvantages, namely its mechanical properties are not as high as steel [3]. The properties of gray cast iron depend on its composition which is influenced by two normal elements present in ordinary iron such as carbon, silicon, phosphorus, sulfur, and manganese [4][5][6][7]. This is due to the lower cost of gray cast iron (20%-40% cheaper than steel) and a wide range of desired mechanical properties, the ability to be cast in complex shapes, easy to form by machining processes, and good wear resistance in several applications [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Gray Cast Iron with the Addition of 3 Wt.% FeMn in the Casting Process with Metal Molds and Sand Molds

Yulianto,

Darmawan,

Mustika

et al. 2024

Advances in Science and Technology

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This study aims to determine how the effect of inoculation of manganese (FeMn) on the hardness value, the results of microstructure photos, and the results of the Scanning Electron Microscopy Energy Dispersive X-ray Spectroscopy, test on gray cast iron material with the addition of 3% FeMn. In this casting process using an induction smelting furnace with a temperature of 1300 – 1400 C the material used for smelting is iron (Fe), melted and then mixed with 3%. FeMn after mixed poured into metal molds and prepared sand. The results of the hardness test showed that the hardness values vary in the upper, lower, and intermediate metal molds. The results of microstructure testing of metal molds, transitional molds, and sand molds at the bottom are the hardest because the graphite is neatly arranged and clearly visible. The results of the Scanning Electron Microscopy Energy Dispersive X-ray Spectroscopy test of the Mn element in the metal mold was detected at 3.45% and in the sand mold at 0.00%, the Mn sand mold was actually detected on the graph but did not appear in the data table because it was covered by Fe, C, and Si elements.

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“…Changing the shape of sharp flake graphite into spherical graphite will reduce the stress concentration so that the cast iron becomes stronger and harder. This can be accomplished by adding magnesium or cerium alloying elements [22][23][24]. Magnesium is the most used nodular forming element, and it is usually used in alloys with other components, such as FeSiMg alloys, where the other elements act to minimize the violent reaction between magnesium and the base iron, as well as to control matrix composition and minimize the effect of damaging elements on graphite morphology.…”

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURE EVOLUTION AND HARDNESS IMPROVEMENT OF GRAY CAST IRON BY ADDITION OF FeSiMg FOLLOWED BY FLAME HARDENING PROCESS

Darmawan,

Anggono,

Yulianto

et al. 2023

Acta Metall Slovaca

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The addition of magnesium alloy elements followed by a flame-hardening process will change the phase configuration in gray cast iron. This study aims to investigate changes in microstructure and hardness due to these two processes. The addition of magnesium is conducted by adding FeSiMg as a carrier for magnesium. Metallographic examination to observe changes in microstructure was carried out using a Scanning Electron Microscope (SEM) and Energy-Dispersive X-ray Spectroscopy (EDS). The formed phase is examined by X-Ray Diffraction testing. The hardness test was carried out using the Vickers technique on the surface of the gray cast iron, the nodular cast iron, and the flame-hardened nodular cast iron. Whilst for flame-hardened nodular cast iron, the Vickers technique was also conducted on a cross-section. The addition of the FeSiMg compound changed flake graphite into spherical graphite with increased hardness from 130 VHN to 313.22 VHN. The flame-hardening process in nodular cast iron results in the formation of a martensite phase and the disappearance of graphite on the surface of the material. The hardness on the surface of the material due to the flame-hardening process increased by 82.4% compared to the substrate.

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Comparison of Microstructure, Yield Strength, Tensile Strength, and Modulus of Elasticity between Gray Cast Iron and Nodular Cast Iron

Cited by 3 publications

References 32 publications

Effect of Shielded Metal Arc Welding on Microstructure, Hardness, and Tensile Strength of Nodular Cast Iron

Effect of Shielded Metal Arc Welding on Microstructure, Hardness, and Tensile Strength of Nodular Cast Iron

Characterization of Gray Cast Iron with the Addition of 3 Wt.% FeMn in the Casting Process with Metal Molds and Sand Molds

MICROSTRUCTURE EVOLUTION AND HARDNESS IMPROVEMENT OF GRAY CAST IRON BY ADDITION OF FeSiMg FOLLOWED BY FLAME HARDENING PROCESS

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