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Plastic strain effect on cleavage microcracks propagation in probabalistic statement. Part 1. Formulation of the problem and research methods
https://doi.org/10.22349/1994-6716-2024-119-3-153-168
Abstract
The first part considers the main physical and mechanical processes occurring under tension of round bars. The procedure is presented that allows one to describe the plastic strain effect on the critical brittle fracture stress in probabilistic statement. The main statements of Prometey model for prediction of fracture stress are also presented. The investigations are carried out for two materials: 2Cr–Ni–Mo–V steel used for WWER-1000 RPV in the thermally-embrittled state and low-alloyed low-strength steel of St3 grade taken as model material ruptured by cleavage up to plastic strain up to 50%.
About the Authors
B. Z. Margolin
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Dr Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
V. N. Fomenko
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
V. A. Shvetsova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Phys-math)
49 Shpalernaya St, 191015 St Petersburg
F. L. Shishkov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
E. V. Yurchenko
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng)
49 Shpalernaya St, 191015 St Petersburg
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Review
For citations:
Margolin B.Z., Fomenko V.N., Shvetsova V.A., Shishkov F.L., Yurchenko E.V. Plastic strain effect on cleavage microcracks propagation in probabalistic statement. Part 1. Formulation of the problem and research methods. Voprosy Materialovedeniya. 2024;(3(119)):153-168. (In Russ.) https://doi.org/10.22349/1994-6716-2024-119-3-153-168
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