Details
| Original language | English |
|---|---|
| Pages (from-to) | 541-549 |
| Number of pages | 9 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 27 |
| Issue number | 2 |
| Publication status | Published - 11 Jan 2018 |
Abstract
The process of cyclic bending was investigated using thin sheets of the magnesium alloy AZ31 and α-titanium. These materials possess an hcp crystal lattice with different c/a ratios. It turned out that the latter have a substantial influence on the sheet deformation behavior. Even for small deformations (up to 2% strain), a large influence on the yield stress was present for both materials. In addition, cyclic bending contributes to the activation of prismatic slip, which is accompanied by twinning and detwinning. The changes in sheet anisotropy following cyclic bending were determined using texture measurements. Specifically, the AZ31 alloy sheets exhibited a considerable change in anisotropy of the mechanical properties with an increasing number of bending cycles. The anisotropy in the yield stress increases from 15% in the initial condition to 40% after three cycles. For the α-titanium sheet, the change in anisotropy was approx. 26% less. In general, the largest changes in properties occurred already in the first bending cycle and a stabilization took place upon further cycling.
Keywords
- AZ31, cyclic bending, detwinning, mechanical properties, microstructure, texture, twinning, α-titanium
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Journal of Materials Engineering and Performance, Vol. 27, No. 2, 11.01.2018, p. 541-549.
Research output: Contribution to journal › Review article › Research › peer review
}
TY - JOUR
T1 - The Influence of Alternating Low-Cycle Bending Loads on Sheet Properties Having an Hcp Crystal Lattice
AU - Demler, Eugen
AU - Rodman, Dmytro
AU - Rodman, Mykhailo
AU - Gerstein, Gregory
AU - Grydin, Olexandr
AU - Briukhanov, Arkadiy A.
AU - Klose, Christian
AU - Nürnberger, Florian
AU - Maier, Hans Jürgen
N1 - Funding information: The authors thank the German Research Foundation (DFG) for financial support of Project RO 5248/1-1 ‘‘Investigation of combined influence of skin pass rolling and roller straightening of a thin sheet made of materials with different crystal lattice on microstructure, texture, static and fatigue strength’’ and Dr. rer. nat. habil. B. Breidenstein for their support during the texture measurements.
PY - 2018/1/11
Y1 - 2018/1/11
N2 - The process of cyclic bending was investigated using thin sheets of the magnesium alloy AZ31 and α-titanium. These materials possess an hcp crystal lattice with different c/a ratios. It turned out that the latter have a substantial influence on the sheet deformation behavior. Even for small deformations (up to 2% strain), a large influence on the yield stress was present for both materials. In addition, cyclic bending contributes to the activation of prismatic slip, which is accompanied by twinning and detwinning. The changes in sheet anisotropy following cyclic bending were determined using texture measurements. Specifically, the AZ31 alloy sheets exhibited a considerable change in anisotropy of the mechanical properties with an increasing number of bending cycles. The anisotropy in the yield stress increases from 15% in the initial condition to 40% after three cycles. For the α-titanium sheet, the change in anisotropy was approx. 26% less. In general, the largest changes in properties occurred already in the first bending cycle and a stabilization took place upon further cycling.
AB - The process of cyclic bending was investigated using thin sheets of the magnesium alloy AZ31 and α-titanium. These materials possess an hcp crystal lattice with different c/a ratios. It turned out that the latter have a substantial influence on the sheet deformation behavior. Even for small deformations (up to 2% strain), a large influence on the yield stress was present for both materials. In addition, cyclic bending contributes to the activation of prismatic slip, which is accompanied by twinning and detwinning. The changes in sheet anisotropy following cyclic bending were determined using texture measurements. Specifically, the AZ31 alloy sheets exhibited a considerable change in anisotropy of the mechanical properties with an increasing number of bending cycles. The anisotropy in the yield stress increases from 15% in the initial condition to 40% after three cycles. For the α-titanium sheet, the change in anisotropy was approx. 26% less. In general, the largest changes in properties occurred already in the first bending cycle and a stabilization took place upon further cycling.
KW - AZ31
KW - cyclic bending
KW - detwinning
KW - mechanical properties
KW - microstructure
KW - texture
KW - twinning
KW - α-titanium
UR - http://www.scopus.com/inward/record.url?scp=85040325901&partnerID=8YFLogxK
U2 - 10.1007/s11665-018-3123-2
DO - 10.1007/s11665-018-3123-2
M3 - Review article
AN - SCOPUS:85040325901
VL - 27
SP - 541
EP - 549
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
SN - 1059-9495
IS - 2
ER -