Effect of specimen size on the impact properties of neutron irradiated A533B steel

Schubert, L.E.; Kumar, Arvind S.; Rosinki, Stan T.; Hamilton, M.L.

doi:10.1016/0022-3115(95)00052-6

Cited by 34 publications

(16 citation statements)

References 5 publications

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“…is given by Schubert et al [8], where B is the specimen thickness, b is the length of the remaining ligament at the notch, K is the modified stress concentration factor at the notch and L is the specimen span. Test data from standard and non-standard specimens can be normalized by NF and achieve a specimen geometry independent CVN impact fracture energy value.…”

Section: Thickness Correctionmentioning

confidence: 99%

“…Corrections for sub-sized specimens in CVN testing have been studied extensively, e.g., see [5][6][7][8]. The driving force behind using the sub-sized specimen and the accompanied studies was the limited materials available for the CVN testing, particularly from the irradiated materials of the nuclear reactor vessels.…”

Section: Thickness Correctionmentioning

confidence: 99%

“…It is, however, less than the standard thickness 10 mm specified in the ASTM E-23. There are several methods proposed for correcting the effect from sub-sized CVN specimens [5][6][7][8] so that test data from sub-sized specimens can be extrapolated to corresponding results from a standard specimen. Based on our specimen geometry and test conditions, the compensation for fracture volume (or fracture surface) was applied to correct the raw data from reduced thickness to standard thickness.…”

Section: Introductionmentioning

confidence: 99%

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Charpy impact energy, fracture toughness and ductile–brittle transition temperature of dual-phase 590 Steel

2007

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Section: Thickness Correctionmentioning

confidence: 99%

Section: Thickness Correctionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Charpy impact energy, fracture toughness and ductile–brittle transition temperature of dual-phase 590 Steel

2007

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“…However, it is well known that the Charpy impact properties depend on the specimen size as well as the notch location of the weld joint [1][2][3][4]. The HAZ of the weld bond was considered to have lower fracture toughness than the other regions because of the finely grained microstructures in this region [5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of impact properties of weld joint of reactor pressure vessel steels with the use of miniaturized specimens

Kim

Mitsui

Kasada

et al. 2012

Journal of Nuclear Science and Technology

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The effects of specimen size and location of V-notch on the Charpy impact properties were investigated with different sizes of specimens, standard, CVN-1/2, CVN-1/3, and CVN-1.5 mm, for A533B steel, low Mn, high Cu, high phosphorus (P), and high Cu/P steel weld joint. A part of the specimens was irradiated with neutron at 563 K up to 8 6 10 19 n/cm 2 . The heat affected zone (HAZ) specimen is the best in the impact properties among the specimens of base metal, HAZ, and weld metal in the steels with 0.003 wt.% P, while it is the worst in the steels with * 0.3 wt.% P. This indicates that the surveillance test of HAZ specimen can be represented by base metal in the case of A533B steels with lower P content (* 0.003 wt.%). The effects of notch location and chemical contents on ductile to brittle transition temperature (DBTT) are almost independent of specimen size within an error of +5 K, indicating that the miniaturized Charpy specimens are applicable and effective in the surveillance tests of reactor pressure vessel steel of extended operation period. After irradiation, the highest DBTT was observed for the specimen with V-notch in base metal in the case of A533B steel and high Cu steel with 0.003 wt.% P.

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“…A review of the literature shows the efforts to correlate results for standard Charpy with different width [1,2] and standard Charpy with sub-size Charpy [3][4][5][6][7][8][9][10][11][12][13][14]. Small specimen method is also used in another mechanical testing techniques [15,16,17] to minimalize the size of tested material.…”

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confidence: 99%

Influence of specimen dimensions on ductile-to-brittle transition temperature in Charpy impact test

Rzepa

Bucki

Konopík

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. This paper discusses the correlation between specimen dimensions and transition temperature. Notch toughness properties of Standard Charpy-V specimens are compared to samples with lower width (7.5 mm, 5 mm, 2.5 mm) and sub-size Charpy specimens with cross section 3x4. In this study transition curves are correlated with lateral ductile part of fracture related ones for 5 considered geometries. Based on the results obtained, correlation procedure for transition temperature determination of full size specimens defined by fracture appearance of sub-sized specimens is proposed. 1Introduction Charpy test is one of the basic material tests used for material properties characterization. In order to avoid brittle failure under service conditions, transition temperature based on Charpy impact tests is determined for the materials exhibiting transition behavior. The size of the experimental material does not allow in all cases application of standard full size specimens (10x10 mm) and sub-size specimens have to be used. Although, some of sub-sized geometries are standardized, procedures for comparison of results obtained for various specimen geometries are not standardized due to ambiguous relations for different applications. Therefore, relations for specific areas have to be individually established.The use of Charpy specimen geometry with different dimensions leads to development of correlation procedure of the results. A review of the literature shows the efforts to correlate results for standard Charpy with different width [1,2] and standard Charpy with sub-size Charpy [3][4][5][6][7][8][9][10][11][12][13][14]. Small specimen method is also used in another mechanical testing techniques [15,16,17] to minimalize the size of tested material. The aim of presented work was to study influence of Charpy specimen dimensions on ductile-tobrittle transition temperature. Standard Charpy-V specimens are compared to samples with reduced widths (7.5 mm, 5 mm, 2.5 mm) and sub-size Charpy specimens with cross section 3x4 mm. The paper proposes the correlation procedure for transition temperature determination of full size specimens based on fracture appearance of sub-sized specimens. Experiment descriptionThe fracture appearance transition temperatures (FATT) were investigated for Chromium steel P-AK1TD (10,5% Cr, 1.5-1.8% Ni, 1.6-2% W, 0.35-0.5% Mo). Figure 1 shows the microstructure of the steel investigated.

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Effect of specimen size on the impact properties of neutron irradiated A533B steel

Cited by 34 publications

References 5 publications

Charpy impact energy, fracture toughness and ductile–brittle transition temperature of dual-phase 590 Steel

Charpy impact energy, fracture toughness and ductile–brittle transition temperature of dual-phase 590 Steel

Evaluation of impact properties of weld joint of reactor pressure vessel steels with the use of miniaturized specimens

Influence of specimen dimensions on ductile-to-brittle transition temperature in Charpy impact test

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