Development of Ductile Cast Iron for Spent Fuel Cask Applications Using Fracture Mechanics Principles

Ray, K. K.; Tiwari, Siddhartha; Kumari, Hemlata; Kumari, Mamta; Kumar, Hemant; Albert, Shaju K.; Bhaduri, A.K.

doi:10.1007/s12666-015-0825-0

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…Ferritic ductile iron (FDI) is one of the ductile iron (DI), which has good ductility, low-temperature impact properties, and low production cost. FDI has been used to replace low-carbon steel, widely used in exhaust manifolds, spent fuel casks, and hollow rotor shafts of wind turbines and other components [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Study of fractography of ferritic ductile iron at different temperatures and loading conditions

Wang,

Sun

et al. 2024

Mater. Res. Express

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This study characterizes the fractography of ferritic ductile iron under various loads, including tensile, fatigue and bending, and impact conditions. The results indicate that ductile fracture is the primary mechanism observed during tensile testing at room temperature. The fractography resulting from fatigue testing exhibits characteristics similar to cleavage fracture, and explains the formation of fatigue striations caused by the joint effects of dislocation slip and oxidation under crack tip stress. Under impact testing, the main fracture mechanism transitions from ductile to brittle with decreasing temperature. At high temperatures, fractography is mainly characterized by elliptical dimples with graphite nodules at the center that deform along the stress direction. In the ductile-brittle transition temperature range, a mixed fracture mechanism involving both dimples and cleavage patterns is observed. At low temperatures, the fracture mechanism is cleavage fracture, cleavage fracture is mainly caused by the deformation twin, inducing crack nucleation. These findings further validate D.O.Frenandino's quantitative analysis method for determining the main crack propagation direction of ductile fracture and brittle fracture. By employing larger statistical datasets, it is shown that this method yields high accuracy in determining the main crack propagation direction of ferritic ductile iron, thereby promoting its application as a general method for impact fractography anlysis.

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Section: Introductionmentioning

confidence: 99%

Study of fractography of ferritic ductile iron at different temperatures and loading conditions

Wang,

Sun

et al. 2024

Mater. Res. Express

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“…In countries that rely on nuclear power for electricity generation, there is an urgent need to produce large tons of spent fuel transportation casks that meet the safety requirements [1,2]. The safe transportation of spent fuel requires specialized casks that can use effectively and safely under a wide range of environmental conditions, including temperatures ranging from −40 °C to room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…For medium and high strength steels(689 ∼ 1378 MPa), Barsom [10] proposed an empirical relationship of K IC -KV in the transition-temperature region, which is shown in equation (1). It should be noted that the loading rate and notch sensitivity of the pre-cracking SE(B) specimens used in fracture toughness testing, which are subjected to slow loading conditions, and the CVN impact specimens used in Charpy V-notch impact testing, are fundamentally different from each other.…”

Section: Introductionmentioning

confidence: 99%

Correlation between charpy-V notch impact energy and K_JIC of ferrite ductile iron in the transition-temperature region

Wang,

Sun

et al. 2023

Eng. Res. Express

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Fracture toughness is an important index for the structural integrity assessment of ductile iron spent fuel transportation casks. Fracture toughness tests require a long test period, high cost, and difficult operation. Therefore, the Charpy V-notch impact energy value (KV) is considered to predict fracture toughness (KJIC).In this study, Charpy V-notch impact tests(-80°C, -60°C, -40°C, -20 C, 0° °C, 20°C, 40°C, 60°C, 80°C) and fracture toughness tests(-60°C, -40°C, -20°C, 0°C, 20°C) of ferrite ductile iron(FDI) were carried out.A KJIC-KV model for FDI in the transition temperature region was proposed, taking into consideration the influence of test temperature T) and yield strength(σ( YS), then the proposed model was compared to the KIC-KV empirical equations of steel in the transition-temperature region, using the test data of FDI. The results indicate that the KJIC-KV model proposed in this work is more accurate and applicable for predicting fracture toughness values in the transition-temperature region than others, the residual between the estimated value of the KJIC-KV correlation model (KJIC-E) and the experimental value of KJIC(KJIC-T) was less than 4.1MPa·m0.5, and the error was less than 5%.

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The effect of Si-contents on the impact properties and dynamic graphite growth for cast iron QT400-18L

Lipeng¹,

Qu²,

Li³

2018

Mater. Res. Express

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Development of Ductile Cast Iron for Spent Fuel Cask Applications Using Fracture Mechanics Principles

Cited by 3 publications

References 9 publications

Study of fractography of ferritic ductile iron at different temperatures and loading conditions

Study of fractography of ferritic ductile iron at different temperatures and loading conditions

Correlation between charpy-V notch impact energy and K_JIC of ferrite ductile iron in the transition-temperature region

The effect of Si-contents on the impact properties and dynamic graphite growth for cast iron QT400-18L

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Development of Ductile Cast Iron for Spent Fuel Cask Applications Using Fracture Mechanics Principles

Cited by 3 publications

References 9 publications

Study of fractography of ferritic ductile iron at different temperatures and loading conditions

Study of fractography of ferritic ductile iron at different temperatures and loading conditions

Correlation between charpy-V notch impact energy and KJIC of ferrite ductile iron in the transition-temperature region

The effect of Si-contents on the impact properties and dynamic graphite growth for cast iron QT400-18L

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Correlation between charpy-V notch impact energy and K_JIC of ferrite ductile iron in the transition-temperature region