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Strength assessment of austenitic steel grain boundaries by impact bending tests for miniature specimens
https://doi.org/10.22349/1994-6716-2020-102-2-164-173
Abstract
The paper proposes methods for assessing the strength of grain boundaries according to the results of testing miniature specimens by impact bending. Results of bending at low temperature are given to assess the strength of grain boundaries in austenitic chromium-nickel steels. The test temperature was determined when the proportion of brittle intergranular fracture of embrittled chromium-nickel steel 10Kh18N9 is at least 90%. Three types of miniature specimens of different geometric shapes have been developed, providing approximately the same absorbed energy when tested for impact bending. It is shown when it is necessary to use such miniature specimens.
About the Authors
B. Z. Margolin
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Dr Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
A. M. Morozov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
N. E. Pirogova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
M. N. Grigoriev
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
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Review
For citations:
Margolin B.Z., Morozov A.M., Pirogova N.E., Grigoriev M.N. Strength assessment of austenitic steel grain boundaries by impact bending tests for miniature specimens. Voprosy Materialovedeniya. 2020;(2(102)):164-173. (In Russ.) https://doi.org/10.22349/1994-6716-2020-102-2-164-173
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