| Structural evolution and stability of mechanically alloyed Fe-Ni nanocrystalline |
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| 作者姓名： | 陈资 刘奇正 孟庆平 戒咏华 |
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| 作者单位： | [1]School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China |
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| 摘 要： | The structural evolution and stability of Fe100-xNix(x=10, 20, 35, 50) alloys prepared by mechanical alloying were investigated through X-ray diffraction analysis and transmission electron microscopy. The intrinsic conditions of preparation determining phase stability in nanocrystalline were clarified. After being milled for 120 h, the powders of Fe90Ni10 and Fe80Ni20 consist of a single α(bcc) phase, Fe30Ni30 powders are a single γ(fcc), and for Fe65Ni35 powders there is co-existence of α and γ phases. The as-milled Fe80Ni20 powders annealed at 680 ℃ exhibits the stability of high-temperature γ phase at room temperature, which is consistent with the theoretical prediction.
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| 关 键 词： | 非晶合金 FeNi合金 机械合金化 粉末冶金 |
| 文章编号： | 1005-9784（2005）04-0389-04 |
| 收稿时间： | 2004-10-21 |
| 修稿时间： | 2004-12-06 |
Structural evolution and stability of mechanically alloyed Fe-Ni nanocrystalline |
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| Chen Zi , Liu Qi-zheng , Meng Qing-ping and Rong Yong-hua.Structural evolution and stability of mechanically alloyed Fe-Ni nanocrystalline[J].Journal of Central South University of Technology,2005,12(4):389-392. |
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| Authors: | Chen Zi Liu Qi-zheng Meng Qing-ping and Rong Yong-hua |
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| Affiliation: | (1) School of Materials Science and Engineering, Shanghai Jiaotong University, 200030 Shanghai, China |
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| Abstract: | The structural evolution and stability of Fe100−x
Ni
x
(x=10, 20, 35, 50) alloys prepared by mechanical alloying were investigated through X-ray diffraction analysis and transmission
electron microscopy. The intrinsic conditions of preparation determining phase stability in nanocrystalline were clarified.
After being milled for 120 h, the powders of Fe90Ni10 and Fe80Ni20 consist of a single α(bcc) phase, Fe30Ni30 powders are a single γ(fcc), and for Fe65Ni35 powders there is co-existence of α and γ phases. The as-milled Fe80Ni20 powders annealed at 680 °C exhibits the stability of high-temperature γ phase at room temperature, which is consistent with the theoretical prediction.
Foundation item: Project (0159 nm045, 0210 nm017) supported by the Science and Technology Foundation of Shanghai. |
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| Keywords: | mechanical alloying Fe-Ni nanocrystalline structural evolution phase stability martensitic transformation |
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