| Issue |
J. Phys. IV France
Volume 10, Number PR6, April 2000
The Sixth Japan-France Materials Science SeminarJFMSS-6 Microstructural Design for Improved Mechanical Behaviour of Advanced Materials |
|
|---|---|---|
| Page(s) | Pr6-105 - Pr6-110 | |
| DOI | https://doi.org/10.1051/jp4:2000618 | |
The Sixth Japan-France Materials Science Seminar
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-105-Pr6-110
DOI: 10.1051/jp4:2000618
National Research Institute for Metals, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
© EDP Sciences 2000
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-105-Pr6-110
DOI: 10.1051/jp4:2000618
Ultrafine-grain ferrite steel and its mechanical properties
K. NagaiNational Research Institute for Metals, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
Abstract
Ultrafine-grain ferrite steel with the ferrite grain size of less than one micron has been created though heavy deformation at higher temperature regime of ferrite phase for a low carbon Si-Mn steel. It shows a very good balance of high yield strength and low DBTT in Charpy impact test. However, higher strength steel suffers from lower ductility or easier plastic instability. In order overcome the low ductility, strain hardening rate is raised by an adequate dispersion of iron carbides.
© EDP Sciences 2000