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Effect of Quenching on the Grain Boundary Relaxation in PM2000 ODS Alloy |
| GAO Zhan-Yong1,2;WU Jie1;HAN Fu-Sheng1 |
| 1Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
2Department of Materials Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010 |
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| Cite this article: |
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GAO Zhan-Yong, WU Jie, HAN Fu-Sheng 2005 Chin. Phys. Lett. 22 3147-3150 |
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Abstract Grain boundary relaxation in a Fe-based ODS alloy is studied by internal friction measurements. It is found that a grain-boundary peak appears at a lower temperature in the quenched specimens than that in the annealed specimens. The activation energy of the peak is H=2.82±0.11eV for the former while H=2.53±0.08eV for the latter. In addition, a new relaxation peak is observed at the high temperature side of the grain boundary peak in the quenched specimens with an activation energy of 4.41±0.25eV. The height of the peak increases with increasing quenching temperature. The results suggest that both the shift of the grain-boundary peak and the appearance of the new peak are due to increasing vacancies by quenching that are favourable for the motion of the grain boundaries.
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| Keywords:
66.30.Fq
81.40.Jj
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Published: 01 December 2005
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| PACS: |
66.30.Fq
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(Self-diffusion in metals, semimetals, and alloys)
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81.40.Jj
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(Elasticity and anelasticity, stress-strain relations)
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