Correlations between Charpy V-notch impact energy and fracture toughness of nuclear reactor pressure vessel (RPV) steels

Yu, Meifang; Luo, Zhen; Chao, Yuh J.

doi:10.1016/j.engfracmech.2015.08.008

Cited by 36 publications

(21 citation statements)

References 20 publications

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“…The yield strength data of 16MnDR and the rest three materials [26] are fitted and shown in Eqs. (21)(22)(23)(24) respectively:…”

Section: Stress-strain Relations Of the Materialsmentioning

confidence: 99%

“…The Charpy transition curves for 16MnDR and the rest three materials [26] where E CVN is the Charpy impact energy in J and T is in °C. The Charpy transition curves will be used to estimate the reference temperature in the following research.…”

Section: Charpy Impact Data Of the Materialsmentioning

confidence: 99%

“…In this paper, the deviations (expressed in ΔT 0 and equal to estimated According to the relevant literature [24], the tested T 0 of 16MnDR obtained by the fracture toughness test is − 102 °C. Reference temperatures of China A508-3 and USA A533B are considered as − 63 °C and − 58 °C [26] respectively. Reference temperature of Euro 20MnMoNi55 is between − 120 and − 130 °C [26] and the median value − 125 °C is used for calculation and comparison in this paper.…”

Section: Estimations Of Reference Temperature By Directly Use Of T 28mentioning

confidence: 99%

“…Reference temperatures of China A508-3 and USA A533B are considered as − 63 °C and − 58 °C [26] respectively. Reference temperature of Euro 20MnMoNi55 is between − 120 and − 130 °C [26] and the median value − 125 °C is used for calculation and comparison in this paper.…”

Section: Estimations Of Reference Temperature By Directly Use Of T 28mentioning

confidence: 99%

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Reliability research of reference temperature estimation of RPV materials using Charpy impact energy

Yin

Jin

2019

SN Appl. Sci.

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The standard fracture toughness test is usually limited in practical engineering projects due to the expensive and sophisticated experimental procedure or limited specimens. The traditional method to evaluate the structural integrity is to estimate the ductile-brittle transition region by Charpy tests. However, this fuzzy estimation is sometimes too conservative and cannot obtain quantitative fracture toughness data. In recent years, many achievements have been made in the study of the relations between Charpy impact test and fracture toughness test. Although acceptable, the errors caused by these formulas are rarely compared in detail formulas with stable deviation will be more suitable for research or engineering application. Therefore, this paper compares the data of four different ferritic steels to test the error stability of each formula, so as to provide reference for experimental research and engineering facilities. The reliability of each correlation is checked from the view of accuracy or appropriate conservatism. In this research, We found that the T 28J-T 0 correlations, the empirical formula proposed by Rolfe, Novak and Barsom (abbreviated as RNB) and the Mean-4 Procedure obtained by IGC-parameter give the reference temperatures more accurately or appropriately conservatively. These formulas should be preferred in practical application.

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“…The yield strength data of 16MnDR and the rest three materials [26] are fitted and shown in Eqs. (21)(22)(23)(24) respectively:…”

Section: Stress-strain Relations Of the Materialsmentioning

confidence: 99%

Section: Charpy Impact Data Of the Materialsmentioning

confidence: 99%

Section: Estimations Of Reference Temperature By Directly Use Of T 28mentioning

confidence: 99%

Section: Estimations Of Reference Temperature By Directly Use Of T 28mentioning

confidence: 99%

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Reliability research of reference temperature estimation of RPV materials using Charpy impact energy

Yin

Jin

2019

SN Appl. Sci.

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“…Thus, it is important to correlate the fracture parameters from Charpy impact test with those from quasi static test. There are a lot of studies to link the fracture toughness K Ic using different methods [10,11]. Moreover, in the DBTT range, the impact properties of RPV materials are very sensitive to temperature changes.…”

Section: Introductionmentioning

confidence: 99%

Irradiation effect on impact fracture behavior of A508-3 steel in ductile-to-brittle transition range

Zhou

Tong

Qian

et al. 2019

Engineering Failure Analysis

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The mechanical performance of reactor pressure vessel (RPV) materials is an important factor in determining the safety and economics of the operation of a nuclear power plant. The ductile-tobrittle transition temperature (DBTT) tested by Charpy impact test is an important parameter for evaluating the RPV embrittlement. In this paper, the Charpy impact test of RPV steel prior and after irradiation was carried out at different temperatures. The fracture morphology was observed by scanning electron microscopy. The irradiation effect on the impact fracture behavior was analyzed in the DBTT temperature zone. Results show that in the DBTT range, the crack initiation and propagation energy are obviously reduced for the irradiated material. After irradiation, the dimple area on the fracture surface is significantly reduced, and the distance from the crack initiation source to the gap is decreased. For the RPV steel with low Cu steel content, matrix damage becomes the main factor on material irradiation embrittlement.

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Determination of the Temperature Dependences of the Fracture Energy Components of Specimens of Various Types in Impact Bending Tests

et al. 2017

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Correlations between Charpy V-notch impact energy and fracture toughness of nuclear reactor pressure vessel (RPV) steels

Cited by 36 publications

References 20 publications

Reliability research of reference temperature estimation of RPV materials using Charpy impact energy

Reliability research of reference temperature estimation of RPV materials using Charpy impact energy

Irradiation effect on impact fracture behavior of A508-3 steel in ductile-to-brittle transition range

Determination of the Temperature Dependences of the Fracture Energy Components of Specimens of Various Types in Impact Bending Tests

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