Assessment of service loads and material influence on the lifetime of thick-walled nodular cast iron components

Bleicher, Ch.; Kaufmann, Heinz; Melz, Tobias

doi:10.1016/j.ijfatigue.2021.106171

Cited by 11 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metallurgical investigations 21 showed a nodularity of 85.3 and a fraction of ferrite/pearlite/graphite of 82.2/4.6/13.3. Additional information is given in another publication 20 …”

Section: Fatigue Testsmentioning

confidence: 99%

“…In cast iron, process‐related material defects often cannot be avoided. The influence of those defects on fatigue strength of nodular cast iron is investigated 14–20 . In this paper, the focus of the investigations is to determine the influence of the transient material behavior on the calculated damage sum.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of those defects on fatigue strength of nodular cast iron is investigated. [14][15][16][17][18][19][20] In this paper, the focus of the investigations is to determine the influence of the transient material behavior on the calculated damage sum. The influence of defects on fatigue properties was not investigated in this work; therefore, specimens containing major discontinuities were not considered in the evaluation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Consideration of the transient material behavior under variable amplitude loading in the fatigue assessment of nodular cast iron using the strain‐life approach

Hesseler

Baumgartner

Bleicher

2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The consideration of realistic load assumptions is important for the fatigue design of highly stressed nodular cast iron components for wind energy application. Especially in case of overloads causing elastic–plastic deformation, residual stresses may have a strong impact on fatigue life. In strain‐controlled fatigue tests with constant and variable amplitudes, the influence of overloads on lifetime was investigated. During fatigue testing, the transient material behavior, cyclic hardening, cyclic relaxation of the residual stresses, and quasi‐static creep effects of the EN‐GJS‐400‐18‐LT was recorded and evaluated. To quantify the influence of the transient material behavior on the calculated lifetime, fatigue analyses are carried out with the strain‐life approach, both with and without consideration of the transient material behavior. The results show that conservative damage sums are derived if the transient material behavior, especially the relaxation of tensile residual stresses, is neglected.

show abstract

“…Metallurgical investigations 21 showed a nodularity of 85.3 and a fraction of ferrite/pearlite/graphite of 82.2/4.6/13.3. Additional information is given in another publication 20 …”

Section: Fatigue Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Consideration of the transient material behavior under variable amplitude loading in the fatigue assessment of nodular cast iron using the strain‐life approach

Hesseler

Baumgartner

Bleicher

2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…In industrial applications, nodular cast iron material is a suitable material to be applied in the manufacture of various products. Nodular cast iron has the ability to be easily formed [1][2][3][4][5][6]. Nodular cast iron is a type of cast iron that contains graphite in the form of nodules.…”

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.

View full text Add to dashboard Cite

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.

show abstract

“…Ductile or nodular cast iron (DCI) is finding increasing applications as a viable alternative to steels 1 . The high castability conferred by its high carbon (C) content allows the fabrication of parts with intricate geometries, such as wind turbine components, railway brake disks, crankshaft, wheels, pumps, gears, valves, and pipes 2,3 .…”

Section: Introductionmentioning

confidence: 99%

Yield and fracture loci for a ductile cast iron EN‐GJS‐600–3 under biaxial stresses

Benedetti

Curtolo

Dallago

et al. 2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Biaxial (axial and torsional loading) static tests were performed for the first time on EN‐GJS‐600–3 ductile cast iron tubular specimens obtained reproducing the solidification conditions typical of thick‐walled castings. The experimental results were elaborated to determine the yield and fracture loci of the material, which exhibited significant deviations from those predicted by the von Mises and Mohr–Coulomb criteria usually adopted for steels and gray cast iron, respectively. For this purpose, several alternative criteria proposed in the technical literature, some of them specifically devised for composite materials, have been calibrated and compared to account for the peculiar mechanical properties of this natural composite material.

show abstract

Assessment of service loads and material influence on the lifetime of thick-walled nodular cast iron components

Cited by 11 publications

References 5 publications

Consideration of the transient material behavior under variable amplitude loading in the fatigue assessment of nodular cast iron using the strain‐life approach

Consideration of the transient material behavior under variable amplitude loading in the fatigue assessment of nodular cast iron using the strain‐life approach

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

Yield and fracture loci for a ductile cast iron EN‐GJS‐600–3 under biaxial stresses

Contact Info

Product

Resources

About