Large scale testing and statistical analysis of dynamic fracture toughness of ductile cast iron

Baer, Wolfram; Wossidlo, Peter; Abbasi, Behboud; Cassau, Matthias; Häcker, Ralf; Kossert, Reimund

doi:10.1016/j.engfracmech.2009.01.005

Cited by 13 publications

(7 citation statements)

References 4 publications

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“…Detailed overviews about fracture mechanics properties of different types of NCI are given in [10,14,97]. In addition, numerous fracture tests under increased rates of loading were performed with several techniques [7,9,97,114,126]. Such tests are relevant for engineering applications but impose the severe practical problem especially the determination of the current crack length.…”

Section: Monotonic Loadingmentioning

confidence: 99%

Micromechanisms of fracture in nodular cast iron: From experimental findings towards modeling strategies – A review

Hütter

Zybell

Kuna

2015

Engineering Fracture Mechanics

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Section: Monotonic Loadingmentioning

confidence: 99%

Micromechanisms of fracture in nodular cast iron: From experimental findings towards modeling strategies – A review

Hütter

Zybell

Kuna

2015

Engineering Fracture Mechanics

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“…The special focus of this paper is on the materials response in terms of deformation, damage and fracture behavior when the temperature, type and rate of loading as well as the pearlite contents are varied within practically relevant limits. A comprehensive compilation of investigations and results concerning mechanical properties, fracture mechanics test methods and material data can be found for instance in [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Performance of Modern DCI Materials – Investigation of Microstructural, Temperature and Loading Rate Effects on Mechanical and Fracture Mechanical Properties

Baer¹

2014

MSF

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Design and safety assessment of advanced ductile cast iron (DCI) components like windturbines or transport and storage casks for radioactive materials require appropriate material data interms of strength and fracture toughness. Therefore, it is of vital importance to characterize andunderstand the deformation, damage and fracture behaviour of DCI which may substantially changefrom ductile to brittle by increasing loading rate, decreasing temperature and/or increasing stresstriaxiality. This paper reports on recent BAM investigations on different qualities of the widely usedDCI grade EN-GJS-400 with varying pearlite shares (none and 18 % respectively). The focus wason the influences of microstructure, temperature (ambient and -40 °C) and loading rate (quasi-staticto crash) on strength (YS, UTS, flow curve) and fracture mechanical properties (R-curve, crackinitiation toughness, fracture toughness). Systematic metallographical and fractographical analyseswere performed accompanying the whole test program and a systematics of specific damagebehaviour and fracture mechanisms was derived from the results.

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“…Karsay and E. Campomanes [4][5][6][7][8][9] studied the influence of silicon content on ductile iron, and found that lower silicon content can reduce the performance of chunky graphite iron, especially in its capacity to demonstrate good impact performance at low temperatures. The proper content of silicon can increase the nodularity and improve the mechanical properties of heavy section ductile iron, and inhibit graphite floatation and chunky graphite formation [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Effects of Silicon on Mechanical Properties and Fracture Toughness of Heavy-Section Ductile Cast Iron

Song

Guo

Wang

et al. 2015

Metals

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Abstract:The effects of silicon (Si) on the mechanical properties and fracture toughness of heavy-section ductile cast iron were investigated to develop material for spent-nuclear-fuel containers. Two castings with different Si contents of 1.78 wt.% and 2.74 wt.% were prepared. Four positions in the castings from the edge to the center, with different solidification cooling rates, were chosen for microstructure observation and mechanical properties' testing. Results show that the tensile strength, elongation, impact toughness and fracture toughness at different positions of the two castings decrease with the decrease in cooling rate. With an increase in Si content, the graphite morphology and the mechanical properties at the same position deteriorate. Decreasing cooling rate changes the impact fracture morphology from a mixed ductile-brittle fracture to a brittle fracture. The fracture morphology of fracture toughness is changed from ductile to brittle fracture. When the Si content exceeds 1.78 wt.%, the impact and fracture toughness fracture morphology transforms from ductile to brittle fracture. The in-situ scanning electronic microscope (SEM) tensile experiments were first used to observe the dynamic tensile process. The influence of the vermicular and temper graphite on fracture formation of heavy section ductile iron was investigated. OPEN ACCESSMetals 2015, 5 151

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Large scale testing and statistical analysis of dynamic fracture toughness of ductile cast iron

Cited by 13 publications

References 4 publications

Micromechanisms of fracture in nodular cast iron: From experimental findings towards modeling strategies – A review

Micromechanisms of fracture in nodular cast iron: From experimental findings towards modeling strategies – A review

Performance of Modern DCI Materials – Investigation of Microstructural, Temperature and Loading Rate Effects on Mechanical and Fracture Mechanical Properties

Effects of Silicon on Mechanical Properties and Fracture Toughness of Heavy-Section Ductile Cast Iron

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