Influence of Irradiation with Ar+ Ions on the Process of the Delayed Fracture of a Maraging Steel
| Autor: | V. V. Berezovskaya, V. V. Ovchinnikov, N. V. Gushchina, R. A. Savray, O. V. Maslova |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Argon Materials science fungi chemistry.chemical_element Fracture mechanics engineering.material Intergranular corrosion Condensed Matter Physics Microstructure 01 natural sciences Indentation hardness Brittleness chemistry 0103 physical sciences Materials Chemistry engineering Irradiation Composite material 010306 general physics Maraging steel |
| Zdroj: | Physics of Metals and Metallography. 121:291-297 |
| ISSN: | 1555-6190 0031-918X |
| DOI: | 10.1134/s0031918x20030035 |
| Popis: | —The microhardness, the structure of the maraging steel (MAS) 03N18K3M3T, and its susceptibility to delayed fracture (DF) after various regimes of treatment, including surface irradiation with argon ions Ar+ with an energy of 40 keV have been studied in this work. It has been shown that the most significant improvement in the properties (maximum hardness and minimum strength decrease upon DF) is reached if using irradiation at the final stage of steel treatment. The efficiency of this treatment regime is seen in the change of the mechanism of the crack propagation: from the brittle intergranular mechanism after steel aging for 3 h at 400°C (remaining the same in the case of ion irradiation before aging) to the quasi-cleavage mechanism during the irradiation after aging. It has been noted that in the latter case the microstructure of the investigated steel becomes more homogeneous over the entire volume of the sample as compared to the steel after the preliminary irradiation. |
| Databáze: | OpenAIRE |
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