Аннотация
The paper studies the mechanical properties and configuration of plastic zones in notched high-strength structural steel under tension. Quantitative analysis of the plastic zones is made by constructing strain intensity distribution patterns with the use of the television-optical measuring complex TOMSC. Fracture associated with plastic flow is analyzed by comparing fractographs and distributions of strain characteristics. It is found that the fracture originates in a region with maximum strain intensity. It is shown that the mechanisms of plastic flow in high-strength steel specimens with Π < 1.58 and Π > 4.65, where Π is the index of initial stress stiffness, differ considerably. It is demonstrated that the high-strength steel specimens are fractured by quasibrittle mechanisms; however, ductile micromechanisms through pore nucleation and growth remain operative at all stages of fracture.
Язык оригинала | Английский |
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Страницы (с-по) | 173-177 |
Число страниц | 5 |
Журнал | Physical Mesomechanics |
Том | 13 |
Номер выпуска | 3-4 |
DOI | |
Состояние | Опубликовано - 2010 |
ASJC Scopus subject areas
- Mechanics of Materials
- Materials Science(all)
- Condensed Matter Physics
- Surfaces and Interfaces