Laser-induction welding of nodular grey cast iron using oscillating beam guidance-microstructural and mechanical characterization

Sommer, Niklas; Böhm, Stefan

doi:10.1016/j.jajp.2021.100078

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Following the removal of the extra penetrant, a developer is used to pull the penetrant from any surface flaws. Depending on the type of fault being found and the lighting in the testing area, visible or fluorescent dyes can be used for dye penetrant testing (46). While fluorescent dyes require the use of UV light to identify the signal of the defect, visible dyes are employed in well-lit areas.…”

Section: Dye Penetrant Testingmentioning

confidence: 99%

Investigating the causes and remedies for porosity defects in the casting process: A review

Sahoo¹,

Goswami²

2023

BIJE

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The casting process is a crucial manufacturing method utilized in numerous sectors to create intricate components and forms. However, there are a number of underlying causes of casting flaws that can result in subpar quality, higher costs, and decreased productivity. This review seeks to give a general overview of casting process flaws, their causes, and possible fixes. The evaluation will go over the various possible flaws, including porosity, shrinkage, and surface abnormalities, as well as their underlying causes, which include design, material, and process characteristics. Furthermore, the review will focus on various remedial measures that can be taken to overcome these defects and improve casting quality, such as changes in design, material selection, and process optimization. This review will be useful for researchers and practitioners in the casting industry who are interested in improving their understanding of casting defects and developing effective remedial measures to enhance product quality and efficiency.

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Section: Dye Penetrant Testingmentioning

confidence: 99%

Investigating the causes and remedies for porosity defects in the casting process: A review

Sahoo¹,

Goswami²

2023

BIJE

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“…Nodules in nodular cast iron provide higher toughness, strength, fatigue resistance, stiffness, and vibration resistance than gray cast iron which contains graphite in the form of flakes. The excellent properties of nodular cast iron are due to its microstructure consisting of nodular graphite surrounded by ferrite and pearlite [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Austempering Holding Time Variations of 30, 60, and 90 Minutes at 300 °C on The Microstructure and Toughness of Nodular Cast Iron

Darmawan,

Anggono,

Yulianto

et al. 2024

J. Phys.: Conf. Ser.

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The phases of the nodular cast iron matrix are similar to those of steel. Therefore, heat treatment of steel can be applied to nodular cast iron. A potential heat treatment for nodular cast iron is austempering. This study aimed to determine the effect of austempering holding time at 300 °C on the microstructure and toughness of nodular cast iron. The austempering process begins with austenitizing at a temperature of 850 °C for 60 minutes, then the quenching process is carried out in a salt bath until a temperature of 300 °C is held with variations of 30, 60, and 90 minutes, then cooled to room temperature. Metallographic testing was conducted to determine the phase change before and after the austempering process using a Scanning Electron Microscope (SEM). Meanwhile, impact testing was carried out to determine changes in toughness before and after the austempering process. At a holding time of 30 minutes, metallographic testing on the raw material produced a gray coarse pearlite phase, black nodular graphite surrounded by white ferrite. After the austempering process, gray fine pearlite and black nodular graphite appeared. At the holding time of 60 and 90 minutes, the graphite sizes were bigger. Austempering withholding times of 30, 60, and 90 minutes resulted in impact energy of 4.2, 10, and 11 Joule. From the results of the study, it was concluded that an increase in holding time would increase the size of the graphite and the toughness of nodular cast iron.

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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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Laser-induction welding of nodular grey cast iron using oscillating beam guidance-microstructural and mechanical characterization

Cited by 5 publications

References 8 publications

Investigating the causes and remedies for porosity defects in the casting process: A review

Investigating the causes and remedies for porosity defects in the casting process: A review

Effect of Austempering Holding Time Variations of 30, 60, and 90 Minutes at 300 °C on The Microstructure and Toughness of Nodular Cast Iron

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

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