Details
| Original language | English |
|---|---|
| Pages (from-to) | 318-327 |
| Number of pages | 10 |
| Journal | Materials Science and Engineering A |
| Volume | 403 |
| Issue number | 1-2 |
| Publication status | Published - 25 Aug 2005 |
| Externally published | Yes |
Abstract
Mechanical surface treatments, such as deep rolling, shot peening, hammering, etc., can significantly improve the fatigue behaviour of metallic materials owing to near-surface nanocrystallisation, strain hardening and compressive residual stresses. In this paper, we investigate the stability of near-surface microstructures of deep rolled austenitic stainless steel AISI 304 and turbine blade alloy Ti-6Al-4V during high temperature fatigue (up to 600 °C) by transmission electron microscopy and X-ray diffraction. The investigated nanocrystalline regions are stable during short time annealing and unstable during long time annealing at 600 °C. Isothermal fatigue in the low cycle fatigue regime at high stress amplitudes does not alter the nanocrystalline region up to 600 °C.
Keywords
- Deep rolling, Fatigue, Microstructure, Nanocrystalline materials, Surface nanocrystallisation, Transmission electron microscopy
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. 403, No. 1-2, 25.08.2005, p. 318-327.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mechanical and thermal stability of mechanically induced near-surface nanostructures
AU - Nikitin, I.
AU - Altenberger, I.
AU - Maier, H. J.
AU - Scholtes, B.
N1 - Funding Information: The authors would like to thank the German Science Foundation (DFG) for financial support of the Emmy-Noether group in Kassel (under contract-number AL 558/1-2).
PY - 2005/8/25
Y1 - 2005/8/25
N2 - Mechanical surface treatments, such as deep rolling, shot peening, hammering, etc., can significantly improve the fatigue behaviour of metallic materials owing to near-surface nanocrystallisation, strain hardening and compressive residual stresses. In this paper, we investigate the stability of near-surface microstructures of deep rolled austenitic stainless steel AISI 304 and turbine blade alloy Ti-6Al-4V during high temperature fatigue (up to 600 °C) by transmission electron microscopy and X-ray diffraction. The investigated nanocrystalline regions are stable during short time annealing and unstable during long time annealing at 600 °C. Isothermal fatigue in the low cycle fatigue regime at high stress amplitudes does not alter the nanocrystalline region up to 600 °C.
AB - Mechanical surface treatments, such as deep rolling, shot peening, hammering, etc., can significantly improve the fatigue behaviour of metallic materials owing to near-surface nanocrystallisation, strain hardening and compressive residual stresses. In this paper, we investigate the stability of near-surface microstructures of deep rolled austenitic stainless steel AISI 304 and turbine blade alloy Ti-6Al-4V during high temperature fatigue (up to 600 °C) by transmission electron microscopy and X-ray diffraction. The investigated nanocrystalline regions are stable during short time annealing and unstable during long time annealing at 600 °C. Isothermal fatigue in the low cycle fatigue regime at high stress amplitudes does not alter the nanocrystalline region up to 600 °C.
KW - Deep rolling
KW - Fatigue
KW - Microstructure
KW - Nanocrystalline materials
KW - Surface nanocrystallisation
KW - Transmission electron microscopy
UR - http://www.scopus.com/inward/record.url?scp=23444437587&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2005.05.030
DO - 10.1016/j.msea.2005.05.030
M3 - Article
AN - SCOPUS:23444437587
VL - 403
SP - 318
EP - 327
JO - Materials Science and Engineering A
JF - Materials Science and Engineering A
SN - 0921-5093
IS - 1-2
ER -