Fracture toughness master-curve analysis of the tempered martensitic steel Eurofer97

Mueller, P.; Spätig, P.; Bonadé, R.; Odette, G.R.; Gragg, D.

doi:10.1016/j.jnucmat.2008.12.122

Cited by 31 publications

(20 citation statements)

References 16 publications

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“…Clearly T 0 is still significantly dependent on M for values around M = 30, where a strong T o increase is observed with M. For M greater than about 135, T 0 oscillates around T 0 ≈ -75 ºC which is in good agreement with T 0 = -78 ºC that we reported in [9]. The standard requires a minimum of 6 valid data points, namely points lying below K Jc_limit .…”

Section: T 0 Dependence With M Limitsupporting

confidence: 88%

“…For M>270 this criterion is not fulfilled (Figure 6), which explains the increase in the amplitude of the T 0 oscillations. In [9], the A value of Eq. (1) was fitted with the method of the maximum likelihood according to [21,22] in order to adjust the athermal part of the Master Curve to the data tested at low temperature (T<-100ºC).…”

Section: T 0 Dependence With M Limitmentioning

confidence: 99%

“…While some doubts were cast about the applicability of the master-curve to tempered martensitic steels [7], the master-curve approach was shown to yield a reasonable description of the toughness behavior in the transition region provided that specimen size effect on measured toughness are properly accounted for [8,9]. Indeed, it is well known that measured fracture toughness depends on a variety of parameters, including in particular specimen size and geometry [2].…”

Section: Introductionmentioning

confidence: 99%

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3D finite element and experimental study of the size requirements for measuring toughness on tempered martensitic steels

Mueller¹,

Spätig²

2009

Journal of Nuclear Materials

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The fracture properties of the tempered martensitic steel Eurofer97, which is among the main candidates for fusion power plant structural applications, were studied with two sizes of pre-cracked compact specimens (0.35T C(T) and 0.87T C(T)). The fracture toughness behavior was characterized within the temperature range -80 to -40 ºC. The ductile-to-brittle transition reference temperature, as defined in the ASTM standard E1921, was around T 0 ≈ -75 ºC. At -60 °C, it was found that two sets of toughness data obtained with 0.35T and 0.87T C(T) specimens are not consistent with the size adjustments recommended in the ASTM standard. It was then shown that the underlying reason of this inconsistency is an inappropriate specimen size limit of the ASTM standard for this type of steel. From published fracture toughness data on the tempered martensitic steel F82H steel, similar results were also highlighted. 3D finite elements simulations of the compact specimens were performed to compare the stresses and deformations at the onset of fracture. A local approach model based on the attainment of a critical stress and a critical volume was used to study the constraint loss phenomenon. Within the framework of this model, the strong toughness increase by reducing the specimen size could be satisfactorily explained.2

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Section: T 0 Dependence With M Limitsupporting

confidence: 88%

Section: T 0 Dependence With M Limitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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3D finite element and experimental study of the size requirements for measuring toughness on tempered martensitic steels

Mueller¹,

Spätig²

2009

Journal of Nuclear Materials

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“…Many researchers such as Petti and Dodds [14], Landes and McCabe [16] Mueller et al [17] including Wallin et al [18] has discovered various correction methods to resolve the problem due to constraint loss. In order to resolve the problem of non-SSY condition in small samples, numerical approaches need a model to simulate cleavage phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Determination of reference transition temperature of In-RAFMS in ductile brittle transition regime using numerically corrected Master Curve approach

Tiwari

Avinash

et al. 2015

Engineering Fracture Mechanics

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“…This result led to the concept of a universal shape in the median toughness-temperature curve for all 'ferritic steels'. In ASTM E1921-09c, the tempered martensitic steels are considered as a class of 'ferritic steels' for which the master curve concept is applicable [14,15]. However, there are some doubts about the universal shape in the ASTM master curve for the tempered martensitic steels, such as Eurofer97 [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Master curve characterization of the fracture toughness behavior in SA508 Gr.4N low alloy steels

Lee

Kim

Lee

et al. 2010

Journal of Nuclear Materials

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Fracture toughness master-curve analysis of the tempered martensitic steel Eurofer97

Cited by 31 publications

References 16 publications

3D finite element and experimental study of the size requirements for measuring toughness on tempered martensitic steels

3D finite element and experimental study of the size requirements for measuring toughness on tempered martensitic steels

Determination of reference transition temperature of In-RAFMS in ductile brittle transition regime using numerically corrected Master Curve approach

Master curve characterization of the fracture toughness behavior in SA508 Gr.4N low alloy steels

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