Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 173-177 |
| Number of pages | 5 |
| Journal | Physical Mesomechanics |
| Volume | 13 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 2010 |
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Keywords
- Deformation
- Fracture
- Methods of strain measurements
- Plastic zones
- Stress state
ASJC Scopus subject areas
- Mechanics of Materials
- Materials Science(all)
- Condensed Matter Physics
- Surfaces and Interfaces
Cite this
Effect of localized strain on fracture of high-strength structural steel with varying stress stiffness. / Derevyagina, L. S.; Panin, V. E.; Gordienko, A. I.
In: Physical Mesomechanics, Vol. 13, No. 3-4, 2010, p. 173-177.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of localized strain on fracture of high-strength structural steel with varying stress stiffness
AU - Derevyagina, L. S.
AU - Panin, V. E.
AU - Gordienko, A. I.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Deformation
KW - Fracture
KW - Methods of strain measurements
KW - Plastic zones
KW - Stress state
UR - http://www.scopus.com/inward/record.url?scp=77956123401&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956123401&partnerID=8YFLogxK
U2 - 10.1016/j.physme.2010.07.009
DO - 10.1016/j.physme.2010.07.009
M3 - Article
VL - 13
SP - 173
EP - 177
JO - Physical Mesomechanics
JF - Physical Mesomechanics
SN - 1029-9599
IS - 3-4
ER -