Fracture and tensile behavior of neutron-irradiated A533-B pressure vessel steel

Hunter, C.W.; Williams, J.A.

doi:10.1016/0029-5493(71)90045-8

Cited by 21 publications

(6 citation statements)

References 3 publications

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“…A comparison with the results obtained by other investigators [3] who tested also a similar steel irradiated in similar conditions shows that the increase in yield strength measured in our material is lower ( N 100 MPa) compared with = 250 MPa in Ref. [3]. This might be related to the different levels of impurity contents in these materials.…”

Section: Tensile Propertiescontrasting

confidence: 71%

“…The analysis of the stress-strain curves showed that, except for the increase in tensile properties, the irradiation treatment did not significantly change the work hardening properties, especially the work hardening coefficient N . A comparison with the results obtained by other investigators [3] who tested also a similar steel irradiated in similar conditions shows that the increase in yield strength measured in our material is lower ( N 100 MPa) compared with = 250 MPa in Ref. [3].…”

Section: Tensile Propertiescontrasting

confidence: 49%

“…2 corresponding to irradiated material are extrapolated below room temperature by assuming that the increase in yield strength measured above 20°C is maintained constant at lower temperatures. This assumption is well verified in the experimental work by Hunter and Williams [3] who tested below room temperature both irradiated and unirradiated material.…”

Section: Tensile Propertiesmentioning

confidence: 64%

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Irradiation Embrittlement of a Low Alloy Steel Interpreted in Terms of a Local Approach of Cleavage Fracture

Mundheri

Soulat

Pineau

1989

Fatigue Fract Eng Mat Struct

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One heat of A 508 steel is investigated in both the unirradiated and the irradiated condition to determine the variation of the fracture toughness with temperature and specimen thickness. C T type specimens with three thicknesses B (12.5, 25 and 50mm) are used. Two fluence levels (3.1019 and 8. 1019 n/cm')(E > I MeV) are investigated. It is shown that the fracture toughness is a decreasing function of both specimen thickness and temperature. A model developed previously by Beremin is used to interpret the results. Axisymmetric notched specimens are tested to determine the factors used in the statistical approach of cleavage fracture. It is confirmed that the Beremin model is able to account for the large scatter in fracture toughness observed at a given temperature on the unirradiated material. The specimen thickness effect is also reasonably well interpreted by the model. The irradiation embrittlement can be explained by assuming that the cleavage fracture resistance is not modified by irradiation and by taking into account only the variations of yield strength with irradiation and test temperature. NOMENCLATURE G, = yield strength eR = stress at failure calculated from equation (1) G~ = cleavage stress (iW = Weibull stress calculated from equation (8) K =stress intensity factor m = Weibull modulus [see equation (7)] V, = characteristic volume f = fracture strain calculated from equation (2) B = specimen thickness N = work hardening exponent K , , and K,, = fracture toughness

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Section: Tensile Propertiescontrasting

confidence: 71%

Section: Tensile Propertiescontrasting

confidence: 49%

Section: Tensile Propertiesmentioning

confidence: 64%

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Irradiation Embrittlement of a Low Alloy Steel Interpreted in Terms of a Local Approach of Cleavage Fracture

Mundheri

Soulat

Pineau

1989

Fatigue Fract Eng Mat Struct

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“…This relies on the fact that the microstructures produced by both matrix-and age-hardening provide only long-range barriers to dislocation motion whereas the temperature dependence of the flow properties is controlled by the lattice spacing so that the thermal part of the yield stress should be weakly affected by irradiation. However experimental data published in the literature show a slight modification of the yield stress temperature dependence with irradiation especially at low temperatures [21,54,55]. Using these experimental data the yield stress can be expressed as a function of the temperature and of the fluence as…”

Section: Effect Of Irradiation On the Temperature Dependence Of The Ymentioning

confidence: 99%

Local approach to fracture based prediction of the ΔT56J and shifts due to irradiation for an A508 pressure vessel steel

Tanguy¹,

Bouchet²,

Bugat³

et al. 2006

Engineering Fracture Mechanics

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“…The neutron irradiation causes increase of the yield strength of steels. Figure 12 shows an experimental result on the deterioration due to the irradiation 28 and its prediction according to Eq. (7).…”

Section: Deterioration Of the Toughness Due To Irradiationmentioning

confidence: 99%

Mezzo-scopic Analysis of Fracture Toughness in Steels

Miyata

Tagawa

2002

Mat. Res.

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The cleavage fracture toughness of steels was mezzo-scopically analyzed on the basis of the statistical local fracture criterion approach. The statistical stress criterion at the crack tip region suggests that the cleavage fracture toughness in steels can be described as a function of the yield stress, the cleavage fracture stress, and other mechanical properties of the materials. Formulation of the cleavage fracture toughness was first examined through an investigation on correlation between the cleavage toughness and the cleavage fracture stress obtained in notched round bar specimens in accordance with the theoretical prediction. Then, the scatter of the toughness, specimen thickness effect on the toughness, deterioration of the toughness due to cold working and irradiation, and improvement of the toughness caused by the Ni addition, were analyzed through the formulation of the toughness.

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Fracture and tensile behavior of neutron-irradiated A533-B pressure vessel steel

Cited by 21 publications

References 3 publications

Irradiation Embrittlement of a Low Alloy Steel Interpreted in Terms of a Local Approach of Cleavage Fracture

Irradiation Embrittlement of a Low Alloy Steel Interpreted in Terms of a Local Approach of Cleavage Fracture

Local approach to fracture based prediction of the ΔT56J and shifts due to irradiation for an A508 pressure vessel steel

Mezzo-scopic Analysis of Fracture Toughness in Steels

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