Parameters of Necking Onset during Deformation of Chromium–Nickel Steel Irradiated by Neutrons
М. С. МережкоInstitute of Nuclear Physics, MoE, 050032, Almaty, KazakhstanО. П. МаксимкинInstitute of Nuclear Physics, MoE, 050032, Almaty, KazakhstanД. А. МережкоInstitute of Nuclear Physics, MoE, 050032, Almaty, KazakhstanAsset ShaimerdenovInstitute of Nuclear Physics, MoE, 050032, Almaty, KazakhstanMichael Philip ShortMassachusetts Institute of Technology, MA, 02139, Cambridge, USA
2019en
ABI
Аннотация
Mechanical tests of 12Cr18Ni10Ti (AISI 321 analogue: 10 Ni, 0.12 C, 0.5 Ti, 18 Cr, <2 Mn, and Fe for balance) commercial stainless steel accompanied by “Digital marker extensometry”, and magnetometry, have been carried out after neutron irradiation to a maximum fluence of 1 × 1023 n/m2 (E > 1 MeV). The plastic instability stress and strain of the necking onset have been estimated. The results of three independent methods are in good agreement. The true local strain at the beginning of the necking process in the 12Cr18Ni10Ti steel has been established to decrease with increasing fluence, whereas the true plastic instability stress remains almost the same.
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