Details
| Original language | English |
|---|---|
| Article number | 041009 |
| Journal | Journal of Engineering Materials and Technology, Transactions of the ASME |
| Volume | 142 |
| Issue number | 4 |
| Early online date | 3 Aug 2020 |
| Publication status | Published - 1 Oct 2020 |
Abstract
This investigation focused on the deformation response and microstructural changes of severely deformed titanium during post-severe plastic deformation tension, at temperatures of 300-600 °C and at strain rates of 0.001-0.1 s-1. The obtained results suggest that SPD enhances the strength of grade 4 titanium up to 500 °C. At above 600 °C, the severely deformed microstructure showed comprehensive recovery. Severely deformed titanium was seen to be highly sensitive to the deformation rate, where strain rate sensitivity increased with the increase of test temperature. Analysis of fracture surfaces reveals that at elevated temperatures, growth of dimples and void coalescence occurs due to the enhanced diffusion rate and occurrence of recrystallized grains.
Keywords
- dynamic recrystallization, ECAE/ECAP, fracture, fracture morphology, materials processing, mechanical behavior, microstructure property relationships, plastic behavior, 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: Journal of Engineering Materials and Technology, Transactions of the ASME, Vol. 142, No. 4, 041009, 01.10.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Fracture behavior of ultrafine-grained titanium under tension at elevated temperatures
AU - Sajadifar, S. V.
AU - Maier, H. J.
AU - Niendorf, T.
AU - Yapici, G. G.
N1 - Funding Information: The authors are thankful for the partial support from the Marie Curie Career Integration Grant (Grant No. 304150) within the EU-FP7 program for conducting this study. The authors are also grateful to the “Safer Materials” project funded by the Hessen State Ministry of Higher Education, Research and the Arts— Initiative for the Development of Scientific and Economic Excellence (LOEWE).
PY - 2020/10/1
Y1 - 2020/10/1
N2 - This investigation focused on the deformation response and microstructural changes of severely deformed titanium during post-severe plastic deformation tension, at temperatures of 300-600 °C and at strain rates of 0.001-0.1 s-1. The obtained results suggest that SPD enhances the strength of grade 4 titanium up to 500 °C. At above 600 °C, the severely deformed microstructure showed comprehensive recovery. Severely deformed titanium was seen to be highly sensitive to the deformation rate, where strain rate sensitivity increased with the increase of test temperature. Analysis of fracture surfaces reveals that at elevated temperatures, growth of dimples and void coalescence occurs due to the enhanced diffusion rate and occurrence of recrystallized grains.
AB - This investigation focused on the deformation response and microstructural changes of severely deformed titanium during post-severe plastic deformation tension, at temperatures of 300-600 °C and at strain rates of 0.001-0.1 s-1. The obtained results suggest that SPD enhances the strength of grade 4 titanium up to 500 °C. At above 600 °C, the severely deformed microstructure showed comprehensive recovery. Severely deformed titanium was seen to be highly sensitive to the deformation rate, where strain rate sensitivity increased with the increase of test temperature. Analysis of fracture surfaces reveals that at elevated temperatures, growth of dimples and void coalescence occurs due to the enhanced diffusion rate and occurrence of recrystallized grains.
KW - dynamic recrystallization
KW - ECAE/ECAP
KW - fracture
KW - fracture morphology
KW - materials processing
KW - mechanical behavior
KW - microstructure property relationships
KW - plastic behavior
KW - severe plastic deformation
KW - titanium
UR - http://www.scopus.com/inward/record.url?scp=85096914156&partnerID=8YFLogxK
U2 - 10.1115/1.4047747
DO - 10.1115/1.4047747
M3 - Article
AN - SCOPUS:85096914156
VL - 142
JO - Journal of Engineering Materials and Technology, Transactions of the ASME
JF - Journal of Engineering Materials and Technology, Transactions of the ASME
SN - 0094-4289
IS - 4
M1 - 041009
ER -