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Structural Evolution of Nanostructured γ-Ni-28Fe Alloy Investigated by Using the Internal Friction Technique |
| LIU Yin1,2;QIN Xiao-Ying1;WANG Li1;ZHANG Ming-Xu2 |
| 1Key Laboratory of Internal Friction and Defects in Solid, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
2Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001 |
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| Cite this article: |
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LIU Yin, QIN Xiao-Ying, WANG Li et al 2003 Chin. Phys. Lett. 20 99-101 |
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Abstract The structural evolution of nanostructured γ-Ni-28Fe alloy (n-Ni-Fe) (grain size d ～ 30 nm), synthesized by the mechno-chemical method, was investigated by using the internal friction technique combined with differential scanning calorimetry (DSC) in the temperature range from 300 K to 670 K. An internal friction peak with typical characteristics of the first-order phase transition was observed in the vicinity of 620 K, which corresponds to a broad exothermic process revealed by using DSC. These results can be explained as the structural changes from the disordering to the ordering transition in the n-Ni-Fe sample.
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| Keywords:
61.46.+w
62.40.+i
64.60.Cn
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Published: 01 January 2003
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| PACS: |
61.46.+w
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62.40.+i
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(Anelasticity, internal friction, stress relaxation, and mechanical resonances)
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64.60.Cn
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(Order-disorder transformations)
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