Details
| Original language | English |
|---|---|
| Pages (from-to) | 457-461 |
| Number of pages | 5 |
| Journal | International Journal of Materials Research |
| Volume | 104 |
| Issue number | 5 |
| Publication status | Published - May 2013 |
| Externally published | Yes |
Abstract
Equal channel angular pressing of low-carbon steel produces an ultrafine-grained microstructure with an average (sub-)grain size of 325 nm and both coarse and fine carbides, a microhardness of 330 HV and 0.2 % offset yield strength of σ0.2 = 815 MPa. The average (sub-)grain size and the mechanical properties of the steel after equal channel angular pressing were found to be stable up to 500 °C. The composition of the carbides, their sizes and their distribution in the microstructure were analyzed in order to understand their contribution to the mechanical properties and the thermal stability of the steel. Both the high strength and the thermal stability of the steel after equal channel angular pressing are associated with the grain refinement, the substructure strengthening, and precipitation hardening.
Keywords
- Carbides, Ferrite, Ferrite low-carbon steel, Ultrafine-grained 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: International Journal of Materials Research, Vol. 104, No. 5, 05.2013, p. 457-461.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Grain refinement and mechanical properties of low-carbon steel by means of equal channel angular pressing and annealing
AU - Mayer, Galina G.
AU - Astafurova, Elena G.
AU - Maier, Hans J.
AU - Naydenkin, Eugene V.
AU - Raab, George I.
AU - Odessky, Pavel D.
AU - Dobatkin, Sergey V.
PY - 2013/5
Y1 - 2013/5
N2 - Equal channel angular pressing of low-carbon steel produces an ultrafine-grained microstructure with an average (sub-)grain size of 325 nm and both coarse and fine carbides, a microhardness of 330 HV and 0.2 % offset yield strength of σ0.2 = 815 MPa. The average (sub-)grain size and the mechanical properties of the steel after equal channel angular pressing were found to be stable up to 500 °C. The composition of the carbides, their sizes and their distribution in the microstructure were analyzed in order to understand their contribution to the mechanical properties and the thermal stability of the steel. Both the high strength and the thermal stability of the steel after equal channel angular pressing are associated with the grain refinement, the substructure strengthening, and precipitation hardening.
AB - Equal channel angular pressing of low-carbon steel produces an ultrafine-grained microstructure with an average (sub-)grain size of 325 nm and both coarse and fine carbides, a microhardness of 330 HV and 0.2 % offset yield strength of σ0.2 = 815 MPa. The average (sub-)grain size and the mechanical properties of the steel after equal channel angular pressing were found to be stable up to 500 °C. The composition of the carbides, their sizes and their distribution in the microstructure were analyzed in order to understand their contribution to the mechanical properties and the thermal stability of the steel. Both the high strength and the thermal stability of the steel after equal channel angular pressing are associated with the grain refinement, the substructure strengthening, and precipitation hardening.
KW - Carbides
KW - Ferrite
KW - Ferrite low-carbon steel
KW - Ultrafine-grained structure
UR - http://www.scopus.com/inward/record.url?scp=84878064911&partnerID=8YFLogxK
U2 - 10.3139/146.110886
DO - 10.3139/146.110886
M3 - Article
AN - SCOPUS:84878064911
VL - 104
SP - 457
EP - 461
JO - International Journal of Materials Research
JF - International Journal of Materials Research
SN - 1862-5282
IS - 5
ER -