Details
| Original language | English |
|---|---|
| Title of host publication | Behavior and Mechanics of Multifunctional and Composite Materials 2008 |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | Behavior and Mechanics of Multifunctional and Composite Materials 2008 - San Diego, CA, United States Duration: 10 Mar 2008 → 13 Mar 2008 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 6929 |
| ISSN (Print) | 0277-786X |
Abstract
Cyclic and time dependence of superelastic properties such as critical stress for stress-induced martensite (OSM). irrecoverable strain levels, and stress hysteresis are crucial parameters to ensure stable operation in applications of shape memory alloys. In our studies on titanium-niobium shape memory alloys that have undergone various thermomechanical processes, declines in both OSIM and stress hysteresis with increasing cycle number were observed. More surprisingly, aging treatment at room temperature following cycling produced stress-strain behavior very similar to behavior of samples prior to cyclic deformation, and irrecoverable strain levels did not increase monotonically with increasing cycle number. Lowest irrecoverable strain levels and smallest evolution in the superelastic behavior were found in precipitated cold rolled or processed specimen by equal channel angular extrusion.
Keywords
- ECAE, Low cycle fatigue, Superelastic cycling, Titanium-niobium shape memory alloys
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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- Apa
- Vancouver
- BibTeX
- RIS
Behavior and Mechanics of Multifunctional and Composite Materials 2008. 2008. 692914 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6929).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Low-cycle superelastic response of a titanium-niobium shape memory alloy
AU - Ji, Ma
AU - Karaman, Ibrahim
AU - Maier, Hans J.
PY - 2008
Y1 - 2008
N2 - Cyclic and time dependence of superelastic properties such as critical stress for stress-induced martensite (OSM). irrecoverable strain levels, and stress hysteresis are crucial parameters to ensure stable operation in applications of shape memory alloys. In our studies on titanium-niobium shape memory alloys that have undergone various thermomechanical processes, declines in both OSIM and stress hysteresis with increasing cycle number were observed. More surprisingly, aging treatment at room temperature following cycling produced stress-strain behavior very similar to behavior of samples prior to cyclic deformation, and irrecoverable strain levels did not increase monotonically with increasing cycle number. Lowest irrecoverable strain levels and smallest evolution in the superelastic behavior were found in precipitated cold rolled or processed specimen by equal channel angular extrusion.
AB - Cyclic and time dependence of superelastic properties such as critical stress for stress-induced martensite (OSM). irrecoverable strain levels, and stress hysteresis are crucial parameters to ensure stable operation in applications of shape memory alloys. In our studies on titanium-niobium shape memory alloys that have undergone various thermomechanical processes, declines in both OSIM and stress hysteresis with increasing cycle number were observed. More surprisingly, aging treatment at room temperature following cycling produced stress-strain behavior very similar to behavior of samples prior to cyclic deformation, and irrecoverable strain levels did not increase monotonically with increasing cycle number. Lowest irrecoverable strain levels and smallest evolution in the superelastic behavior were found in precipitated cold rolled or processed specimen by equal channel angular extrusion.
KW - ECAE
KW - Low cycle fatigue
KW - Superelastic cycling
KW - Titanium-niobium shape memory alloys
UR - http://www.scopus.com/inward/record.url?scp=44949198599&partnerID=8YFLogxK
U2 - 10.1117/12.776577
DO - 10.1117/12.776577
M3 - Conference contribution
AN - SCOPUS:44949198599
SN - 9780819471154
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Behavior and Mechanics of Multifunctional and Composite Materials 2008
T2 - Behavior and Mechanics of Multifunctional and Composite Materials 2008
Y2 - 10 March 2008 through 13 March 2008
ER -