Determination of metal crack resistance on half-size Charpy specimens at cryogenic temperatures

Authors

DOI:

https://doi.org/10.20535/2521-1943.2024.8.3(102).306592

Keywords:

crack resistance, specimen, thermocouple, thermal chamber, extensometer

Abstract

The work consists in the manufacture of experimental equipment for fracture toughness tests at cryogenic temperatures in the range from -196 °Cto -80 °Cand the analysis of the efficiency of determining the reference temperature of a metal by the maker curve for static crack resistance in accordance with ASTM E 1921 and ASTM E399. Liquid nitrogen and its vapours were used to cool the samples to the required temperature. The temperature stability during sample loading was ensured within ±0.5°C around the required temperature. Pre-cracking of the samples was carried out at room temperature in accordance with ASTM E647. Experimental studies on static crack resistance are carried out for three-point bending using half-size Charpy specimens (55×10×5 mm) for the material - 10GN2MFA steel, which is used as the main metal for the main circulation pipelines of VVER-1000. The reference temperature is determined by processing a set of relevant experimental data.

References

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Published

2024-09-30

How to Cite

[1]
K. Lukianenko, M. Zarazovskii, S. Shukayev, and V. Iasnii, “Determination of metal crack resistance on half-size Charpy specimens at cryogenic temperatures”, Mech. Adv. Technol., vol. 8, no. 3(102), pp. 246–255, Sep. 2024.

Issue

Vol. 8 No. 3(102) (2024)

Section

Mechanics

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Copyright (c) 2024 Костянтин Лук'яненко, Максим Заразовський, Сергій Шукаєв, Володимир Ясній

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