Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 1355-1366 |
| Seitenumfang | 12 |
| Fachzeitschrift | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Jahrgang | 40 |
| Ausgabenummer | 6 |
| Publikationsstatus | Veröffentlicht - 2009 |
| Extern publiziert | Ja |
Abstract
The role of time-temperature path on the isothermal austenite-to-bainite phase transformation of low alloy 51 CrV 4 steel was investigated and the corresponding microstructures were analyzed. The important finding is that an incomplete initial austenitization treatment leaves undissolved carbides in the matrix, such that lower carbon and chromium content in the matrix result, eventually accelerating the phase transformation. Furthermore, the residual carbides constitute additional nucleation sites for the bainite plates, speeding up the process even further. Also, both plastic pre-deformation of the supercooled austenite and application of external elastic stresses during the phase transformation lead to transformation plasticity by enhancing the stress fields, providing a driving force for the growth of bainite plates along a preferred orientation. Overall, the current results constitute the first step toward establishing a database for constructing a realistic microstructure-based model for simulating metal forming operations involving austenite-to-bainite phase transformation.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Werkstoffwissenschaften (insg.)
- Metalle und Legierungen
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
in: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Jahrgang 40, Nr. 6, 2009, S. 1355-1366.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Role of austenitization and pre-deformation on the kinetics of the isothermal bainitic transformation
AU - Lambers, H. G.
AU - Tschumak, S.
AU - Maier, H. J.
AU - Canadinc, D.
N1 - Funding Information: Financial support by Deutsche Forschungsgemeins-chaft within the Transregional Collaborative Research Centre TRR 30 ‘‘Prozessintegrierte Herstellung funk-tional gradierter Strukturen auf der Grundlage thermo-mechanisch gekoppelter Phänomene’’ is gratefully acknowledged. The authors also thank Mr. Juri Burow, University of Bochum, for carrying out the EBSD measurements presented herein.
PY - 2009
Y1 - 2009
N2 - The role of time-temperature path on the isothermal austenite-to-bainite phase transformation of low alloy 51 CrV 4 steel was investigated and the corresponding microstructures were analyzed. The important finding is that an incomplete initial austenitization treatment leaves undissolved carbides in the matrix, such that lower carbon and chromium content in the matrix result, eventually accelerating the phase transformation. Furthermore, the residual carbides constitute additional nucleation sites for the bainite plates, speeding up the process even further. Also, both plastic pre-deformation of the supercooled austenite and application of external elastic stresses during the phase transformation lead to transformation plasticity by enhancing the stress fields, providing a driving force for the growth of bainite plates along a preferred orientation. Overall, the current results constitute the first step toward establishing a database for constructing a realistic microstructure-based model for simulating metal forming operations involving austenite-to-bainite phase transformation.
AB - The role of time-temperature path on the isothermal austenite-to-bainite phase transformation of low alloy 51 CrV 4 steel was investigated and the corresponding microstructures were analyzed. The important finding is that an incomplete initial austenitization treatment leaves undissolved carbides in the matrix, such that lower carbon and chromium content in the matrix result, eventually accelerating the phase transformation. Furthermore, the residual carbides constitute additional nucleation sites for the bainite plates, speeding up the process even further. Also, both plastic pre-deformation of the supercooled austenite and application of external elastic stresses during the phase transformation lead to transformation plasticity by enhancing the stress fields, providing a driving force for the growth of bainite plates along a preferred orientation. Overall, the current results constitute the first step toward establishing a database for constructing a realistic microstructure-based model for simulating metal forming operations involving austenite-to-bainite phase transformation.
UR - http://www.scopus.com/inward/record.url?scp=67349110176&partnerID=8YFLogxK
U2 - 10.1007/s11661-009-9827-z
DO - 10.1007/s11661-009-9827-z
M3 - Article
AN - SCOPUS:67349110176
VL - 40
SP - 1355
EP - 1366
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 6
ER -