| dc.creator |
García Mateo, Carlos |
|
| dc.creator |
Peet, M. |
|
| dc.creator |
García Caballero, Francisca |
|
| dc.creator |
Bhadeshia, H. K. D. H. |
|
| dc.date |
2008-03-10T11:18:23Z |
|
| dc.date |
2008-03-10T11:18:23Z |
|
| dc.date |
2004-07 |
|
| dc.date.accessioned |
2017-01-31T01:00:37Z |
|
| dc.date.available |
2017-01-31T01:00:37Z |
|
| dc.identifier |
Materials Science and Technology 20(7): 814-818 (2004) |
|
| dc.identifier |
http://hdl.handle.net/10261/3183 |
|
| dc.identifier |
10.1179/026708304225017355 |
|
| dc.identifier.uri |
http://dspace.mediu.edu.my:8181/xmlui/handle/10261/3183 |
|
| dc.description |
5 pages, 6 figures, 2 tables. |
|
| dc.description |
Recent work has shown that bainitic ferrite plates produced by transformation at low temperatures can be as thin
as 20 nm with a hardness in excess of 650 HV30, tensile strength 2.3 GPa and toughness 30 MPa m1/2. Because
these properties rely on the fine scale of the microstructure, a study has been carried out in relation to the tempering
resistance of steel over the temperature range 350–750ºC. It is found that significant softening occurs only after the
plates of ferrite begin to coarsen. The coarsening process is hindered by the intense precipitation of carbides resulting
from decomposition of the carbon enriched retained austenite. The carbides themselves lead to some precipitation
strengthening during the early stages of tempering. The ferrite is found to contain excess carbon, beyond its solubility
limit, and X-ray analysis indicates that the carbon is associated with heterogeneous strains in the microstructure. It
does not readily precipitate until the onset of substantial recovery during annealing. |
|
| dc.description |
The authors are grateful to the Engineering and Physical Sciences Research Council for supporting this research. They are also grateful to Miss P. Swannell for her general help with the experiments and to Dr M. Vickers for help
with the interpretation of X-ray data. One of the authors (FGC) would like to thank the Spanish Ministerio de Ciencia y Tecnología for financial support in the form of a Ramón y Cajal award (Programa RyC 2002). |
|
| dc.description |
Peer reviewed |
|
| dc.format |
514270 bytes |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.publisher |
Institute of Materials, Minerals and Mining |
|
| dc.relation |
http://dx.doi.org/10.1179/026708304225017355 |
|
| dc.rights |
openAccess |
|
| dc.subject |
Kinetics |
|
| dc.subject |
Bainite |
|
| dc.subject |
Carbides |
|
| dc.subject |
Tempering |
|
| dc.subject |
Retained austenite |
|
| dc.subject |
Phase transformations |
|
| dc.title |
Tempering of hard mixture of bainitic ferrite and austenite |
|
| dc.type |
Artículo |
|