Prediction of the fatigue limit defining mechanism of nodular cast iron based on statistical microstructural features

Vaara, Joona; Väntänen, Miikka; Laine, Jarkko; Kemppainen, Jukka; Frondelius, Tero

doi:10.1016/j.engfracmech.2022.109004

Cited by 3 publications

(1 citation statement)

References 47 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

6th International Conference on Advanced Materials Science

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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

6th International Conference on Advanced Materials Science

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Influence of distribution and size of graphite particle on the machinability of nodular cast iron

Yang,

Wang,

Liu

et al. 2024

Engineering Fracture Mechanics

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A Master Curve for Fatigue Design of Notched Nodular Cast Iron Components Based on the Local Averaged Strain Energy Density

Pelizzari,

Campagnolo,

Dengo

et al. 2024

Materials

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The industry of off-highway vehicles is one of the fields of major application of nodular cast irons, which guarantee the manufacture of complex geometries and ensure good mechanical properties. The present investigation deals with the fatigue design of off-highway axles made of EN-GJS-500-7. Typically, off-highway axles are weakened by stress risers which must be assessed against fatigue. In this investigation, laboratory specimens have been extracted from an off-highway axle to take into account the manufacturing process effects. Different specimens’ geometries have been prepared, including plain, bluntly notched and sharply V-notched specimens, and constant amplitude, load-controlled axial fatigue tests were conducted using two nominal load ratios, namely push–pull and pulsating tension loading. As a result, both the notch and the mean stress effects on the fatigue behaviour of EN-GJS-500-7 have been experimentally investigated for the first time. A well-known local approach, which takes the strain energy density (SED) averaged over a properly defined structural volume as a fatigue damage parameter, has been applied both in the linear elastic and elastic plastic formulations. Since the SED correlated the geometrical notch effects of the specimens as well as the mean stress effects, a master curve based on the averaged SED has been defined for the first time, to the best of the authors’ knowledge, for the fatigue design of off-highway axles made of EN-GJS-500-7.

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Prediction of the fatigue limit defining mechanism of nodular cast iron based on statistical microstructural features

Cited by 3 publications

References 47 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

Influence of distribution and size of graphite particle on the machinability of nodular cast iron

A Master Curve for Fatigue Design of Notched Nodular Cast Iron Components Based on the Local Averaged Strain Energy Density

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