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Research Papers: Materials and Fabrication

The Application of Miniaturized Three-Point-Bend Specimens for Determination of the Reference Temperature of A533 Cl.1 Steel

[+] Author and Article Information
Ludek Stratil

Institute of Physics of Materials,
Academy of Sciences of the
Czech Republic, v. v. i.,
Zizkova 22,
Brno 616 62, Czech Republic
e-mail: stratil@ipm.cz

Filip Siska

Institute of Physics of Materials,
Academy of Sciences of the
Czech Republic, v. v. i.,
Zizkova 22,
Brno 616 62, Czech Republic
e-mail: siska@ipm.cz

Ivo Dlouhy

CEITEC Institute of Physics of Materials,
Academy of Sciences of the
Czech Republic, v. v. i.,
Zizkova 22,
Brno 616 62, Czech Republic
e-mail: idlouhy@ipm.cz

Marta Serrano

Ciemat—Structural Materials Division,
Avda. Complutense 22,
Madrid 280 40, Spain
e-mail: marta.serrano@ciemat.es

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received January 15, 2016; final manuscript received April 13, 2017; published online May 26, 2017. Assoc. Editor: Haofeng Chen.

J. Pressure Vessel Technol 139(4), 041410 (May 26, 2017) (6 pages) Paper No: PVT-16-1009; doi: 10.1115/1.4036532 History: Received January 15, 2016; Revised April 13, 2017

This contribution deals with the determination of the reference temperature of A533 Cl.1 steel using miniaturized specimens. The dimensions of the miniaturized specimens used were 3 × 4 × 27 mm (thickness × width × length). This specimen type allows utilizing a limited amount of test material or the broken halves of precracked Charpy or larger specimens. The test material comes from the broken halves of 0.5 T SE(B) specimens previously tested for the determination of the reference temperature at Ciemat, Madrid. The fracture toughness tests were performed in the transition region of the steel according to the recommendations of the standard ASTM E1921 and according to Wallin's recommended temperature range of miniaturized specimens. The reference temperature of the Master Curve was very similar to the ones obtained from three-point-bend specimens of sizes 0.2 T, 0.4 T, and 0.5 T. The results obtained confirm a necessity to conduct tests at low temperatures and to test a sufficient number of specimens in order to generate enough valid data for the determination of the reference temperature.

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References

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Figures

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Fig. 1

The schema of Master Curve “validity window” as specified by ASTM E1921 [6] and its reduction for miniaturized SE(B) specimens

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Fig. 2

Geometry of 0.12 T SE(B) specimen with side grooves (detail Y)

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Fig. 3

Cutting plan of broken halve of 0.5 T SE(B) specimen

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Fig. 4

Experimental data of 0.12 T SE(B) specimens and the determined Master Curve

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Fig. 5

Distribution of fracture toughness data from 0.12 T SE(B) specimens and from other SE(B) specimens obtained at Ciemat [11]

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