Details
| Original language | English |
|---|---|
| Pages (from-to) | 294-302 |
| Number of pages | 9 |
| Journal | Materials Science and Engineering A |
| Volume | 434 |
| Issue number | 1-2 |
| Publication status | Published - 25 Oct 2006 |
| Externally published | Yes |
Abstract
The present work investigates the mechanical properties of commercial purity (grade 2) titanium after severe plastic deformation followed by conventional cold rolling. Ti billets were processed using equal channel angular extrusion at 350 °C for eight passes. Extruded billets were further cold rolled on two perpendicular faces (flow and longitudinal planes), parallel to the extrusion direction. Microstructural evolution along with crystallographic texture and mechanical properties of the processed samples are presented. The most promising mechanical behavior providing high ultimate tensile strength and ductility is observed in the rolled flow plane samples perpendicular to the rolling direction. Strong in-plane anisotropy in yield strengths of the rolled slabs was observed which cannot be attributed to the sole effect of crystallographic texture. It is suggested that the oriented subgrain/grain boundaries induced by the two-step processing should also play a significant role. Taylor factors were used to distinguish the effects of crystallographic texture and structural morphology. It was found that the directional deformation substructure present in the rolled flow plane slab is responsible for the considerable yield strength anisotropy.
Keywords
- Anisotropy, Equal channel angular extrusion, Severe plastic deformation, Titanium
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Materials Science and Engineering A, Vol. 434, No. 1-2, 25.10.2006, p. 294-302.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mechanical flow anisotropy in severely deformed pure titanium
AU - Yapici, Guney Guven
AU - Karaman, Ibrahim
AU - Maier, Hans J.
N1 - Funding Information: This work was supported by the National Science Foundation contract no. CMS 01-34554, Materials Design and Surface Engineering Program, Directorate of Engineering, Arlington, Virginia. HJM acknowledges financial support by Deutsche Forschungsgemeinschaft, contract no. MA1175/17-1, within the Research Unit Program “Mechanische Eigenschaften und Grenzflächen ultrafeinkörniger Werkstoffe”.
PY - 2006/10/25
Y1 - 2006/10/25
N2 - The present work investigates the mechanical properties of commercial purity (grade 2) titanium after severe plastic deformation followed by conventional cold rolling. Ti billets were processed using equal channel angular extrusion at 350 °C for eight passes. Extruded billets were further cold rolled on two perpendicular faces (flow and longitudinal planes), parallel to the extrusion direction. Microstructural evolution along with crystallographic texture and mechanical properties of the processed samples are presented. The most promising mechanical behavior providing high ultimate tensile strength and ductility is observed in the rolled flow plane samples perpendicular to the rolling direction. Strong in-plane anisotropy in yield strengths of the rolled slabs was observed which cannot be attributed to the sole effect of crystallographic texture. It is suggested that the oriented subgrain/grain boundaries induced by the two-step processing should also play a significant role. Taylor factors were used to distinguish the effects of crystallographic texture and structural morphology. It was found that the directional deformation substructure present in the rolled flow plane slab is responsible for the considerable yield strength anisotropy.
AB - The present work investigates the mechanical properties of commercial purity (grade 2) titanium after severe plastic deformation followed by conventional cold rolling. Ti billets were processed using equal channel angular extrusion at 350 °C for eight passes. Extruded billets were further cold rolled on two perpendicular faces (flow and longitudinal planes), parallel to the extrusion direction. Microstructural evolution along with crystallographic texture and mechanical properties of the processed samples are presented. The most promising mechanical behavior providing high ultimate tensile strength and ductility is observed in the rolled flow plane samples perpendicular to the rolling direction. Strong in-plane anisotropy in yield strengths of the rolled slabs was observed which cannot be attributed to the sole effect of crystallographic texture. It is suggested that the oriented subgrain/grain boundaries induced by the two-step processing should also play a significant role. Taylor factors were used to distinguish the effects of crystallographic texture and structural morphology. It was found that the directional deformation substructure present in the rolled flow plane slab is responsible for the considerable yield strength anisotropy.
KW - Anisotropy
KW - Equal channel angular extrusion
KW - Severe plastic deformation
KW - Titanium
UR - http://www.scopus.com/inward/record.url?scp=33748413053&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2006.06.082
DO - 10.1016/j.msea.2006.06.082
M3 - Article
AN - SCOPUS:33748413053
VL - 434
SP - 294
EP - 302
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
SN - 0921-5093
IS - 1-2
ER -