Details
| Original language | English |
|---|---|
| Pages (from-to) | 1368-1374 |
| Number of pages | 7 |
| Journal | Steel research international |
| Volume | 82 |
| Issue number | 12 |
| Publication status | Published - Dec 2011 |
Abstract
In this work was studied the influence of the plastic deformation's intensity under deep drawing on microstructures of a pearlitic steel containing 0.8% C. Varying the levels of deformation causes diverse dislocation movements as well as modified structural states in the individual phases of the pearlitic eutectoid steel. It is shown that in the course of plastic deformation there is a reduction of interlamellar distance in a pearlite and increase in dislocation density. In some parts partial spheroidisation cementite plates is observed. The bands formed in dislocation structure are found out. The analysis of failure mechanisms of steel with pearlite structure after plastic deformation is carried out. During the deformation of pearlite, the increase in stress at the phase boundary, owing to the elastic strain incompatibility between the ferrite and cementite phases, resembles the stress concentration at grain boundaries. Pores form at the interface between the surface of the ferritic matrix and the spheroidised carbide particles. Such micro pores occur by means of plastic deformation of the ferrite's interstices around the stronger cementite owing to the reduction of the ferritic interstices and their subsequent cracking.
Keywords
- cementite, dislocation structure, pearlitic steel, plastic deformation, superfine structure
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: Steel research international, Vol. 82, No. 12, 12.2011, p. 1368-1374.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A study of structure evolution in pearlitic steel wire at increasing plastic deformation
AU - Gershteyn, G.
AU - Nürnberger, F.
AU - Cianciosi, F.
AU - Shevchenko, N.
AU - Schaper, M.
AU - Bach, Fr W.
PY - 2011/12
Y1 - 2011/12
N2 - In this work was studied the influence of the plastic deformation's intensity under deep drawing on microstructures of a pearlitic steel containing 0.8% C. Varying the levels of deformation causes diverse dislocation movements as well as modified structural states in the individual phases of the pearlitic eutectoid steel. It is shown that in the course of plastic deformation there is a reduction of interlamellar distance in a pearlite and increase in dislocation density. In some parts partial spheroidisation cementite plates is observed. The bands formed in dislocation structure are found out. The analysis of failure mechanisms of steel with pearlite structure after plastic deformation is carried out. During the deformation of pearlite, the increase in stress at the phase boundary, owing to the elastic strain incompatibility between the ferrite and cementite phases, resembles the stress concentration at grain boundaries. Pores form at the interface between the surface of the ferritic matrix and the spheroidised carbide particles. Such micro pores occur by means of plastic deformation of the ferrite's interstices around the stronger cementite owing to the reduction of the ferritic interstices and their subsequent cracking.
AB - In this work was studied the influence of the plastic deformation's intensity under deep drawing on microstructures of a pearlitic steel containing 0.8% C. Varying the levels of deformation causes diverse dislocation movements as well as modified structural states in the individual phases of the pearlitic eutectoid steel. It is shown that in the course of plastic deformation there is a reduction of interlamellar distance in a pearlite and increase in dislocation density. In some parts partial spheroidisation cementite plates is observed. The bands formed in dislocation structure are found out. The analysis of failure mechanisms of steel with pearlite structure after plastic deformation is carried out. During the deformation of pearlite, the increase in stress at the phase boundary, owing to the elastic strain incompatibility between the ferrite and cementite phases, resembles the stress concentration at grain boundaries. Pores form at the interface between the surface of the ferritic matrix and the spheroidised carbide particles. Such micro pores occur by means of plastic deformation of the ferrite's interstices around the stronger cementite owing to the reduction of the ferritic interstices and their subsequent cracking.
KW - cementite
KW - dislocation structure
KW - pearlitic steel
KW - plastic deformation
KW - superfine structure
UR - http://www.scopus.com/inward/record.url?scp=82755198614&partnerID=8YFLogxK
U2 - 10.1002/srin.201100020
DO - 10.1002/srin.201100020
M3 - Article
AN - SCOPUS:82755198614
VL - 82
SP - 1368
EP - 1374
JO - Steel research international
JF - Steel research international
SN - 1611-3683
IS - 12
ER -