Abstract
In order to obtain high-strength materials, several plastic deformation processes are effective. The aim of this study is to obtain high strength material with ductility. To put it definitely, the carbon steels with various carbon contents were deformed by the repetitive side extrusion process and heat treatment, and the properties of materials such as Vickers hardness, tensile strength and microstructure observation were investigated. It was possible to deform by repetitive side extrusion process without any failure for all steels. Vickers hardness was increased a value of 100 comparison to initial hardness for all carbon steels after 1 pass, and hardness increased with increasing number of passes. The microstructures of all steels were refined by deformed structure. After heat treatment, the tensile strength became lower and total elongation increased with decreasing hardness. The uniform elongation of tensile experiments increased with increasing heat treatment time on all materials.
| Original language | English |
|---|---|
| Pages (from-to) | 2705-2710 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 426-432 |
| Issue number | 3 |
| Publication status | Published - 2003 |
| Externally published | Yes |
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Keywords
- ECAE
- Shear deformation
- Tensile strength
- Ultrafine grain
- Vickers hardness
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Properties of annealed high strength steels deformed by repetitive side extrusion process. / Aoki, Koshiro; Kimura, Youichiro; Asada, Yousuke; Azushima, Akira.
In: Materials Science Forum, Vol. 426-432, No. 3, 2003, p. 2705-2710.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Properties of annealed high strength steels deformed by repetitive side extrusion process
AU - Aoki, Koshiro
AU - Kimura, Youichiro
AU - Asada, Yousuke
AU - Azushima, Akira
PY - 2003
Y1 - 2003
N2 - In order to obtain high-strength materials, several plastic deformation processes are effective. The aim of this study is to obtain high strength material with ductility. To put it definitely, the carbon steels with various carbon contents were deformed by the repetitive side extrusion process and heat treatment, and the properties of materials such as Vickers hardness, tensile strength and microstructure observation were investigated. It was possible to deform by repetitive side extrusion process without any failure for all steels. Vickers hardness was increased a value of 100 comparison to initial hardness for all carbon steels after 1 pass, and hardness increased with increasing number of passes. The microstructures of all steels were refined by deformed structure. After heat treatment, the tensile strength became lower and total elongation increased with decreasing hardness. The uniform elongation of tensile experiments increased with increasing heat treatment time on all materials.
AB - In order to obtain high-strength materials, several plastic deformation processes are effective. The aim of this study is to obtain high strength material with ductility. To put it definitely, the carbon steels with various carbon contents were deformed by the repetitive side extrusion process and heat treatment, and the properties of materials such as Vickers hardness, tensile strength and microstructure observation were investigated. It was possible to deform by repetitive side extrusion process without any failure for all steels. Vickers hardness was increased a value of 100 comparison to initial hardness for all carbon steels after 1 pass, and hardness increased with increasing number of passes. The microstructures of all steels were refined by deformed structure. After heat treatment, the tensile strength became lower and total elongation increased with decreasing hardness. The uniform elongation of tensile experiments increased with increasing heat treatment time on all materials.
KW - ECAE
KW - Shear deformation
KW - Tensile strength
KW - Ultrafine grain
KW - Vickers hardness
UR - http://www.scopus.com/inward/record.url?scp=0038000986&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0038000986&partnerID=8YFLogxK
M3 - Article
VL - 426-432
SP - 2705
EP - 2710
JO - Materials Science Forum
JF - Materials Science Forum
SN - 0255-5476
IS - 3
ER -