| Preparation and microstructure of AI-Ni-Y powder by rapid solidification |
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| 作者姓名： | 黄劲松 刘咏 陈仕奇 刘祖铭 |
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| 作者单位： | State Key Laboratory of Power Metallurgy，Central South University，Changsha 410083，China，State Key Laboratory of Power Metallurgy，Central South University，Changsha 410083，China，State Key Laboratory of Power Metallurgy，Central South University，Changsha 410083，China，State Key Laboratory of Power Metallurgy，Central South University，Changsha 410083，China |
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| 基金项目： | Project ( 2 0 0 3AA3 0 2 5 2 0 )supportedbytheNationalAdvancedMaterialsCommitteeofChina |
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| 摘 要： | 1 INTRODUCTIONAluminium basedamorphoushasattractedmoreandmoreattentionforitsgoodmechanicalproper ties13] .Al basedamorphouswereoftenpreparedbymeltspinningonasinglerollerordoublerollers4 8] .SincetheglassformingabilityofAlalloyisrelativelylow9] ,theAl basedamorphouscanonlybepreparedunderhighsolidificationvelocity ,whichresultsinnubAl basedamorphousalloyorfilm(preparedbyionbeamsputtering10 ] )withorderofμm .Itisverydif ficultforustoproducebulkyAl basedamorphousal loy ,whichalsolimits…
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| 关 键 词： | 快速凝固 显微结构 金属粉末 工艺技术 |
| 收稿时间： | 22 April 2003 |
| 修稿时间： | 2 August 2003 |
Preparation and microstructure of Al-Ni-Y powder by rapid solidification |
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| Huang Jin-song , Liu Yong , Chen Shi-qi and Liu Zu-ming.Preparation and microstructure of AI-Ni-Y powder by rapid solidification[J].Journal of Central South University of Technology,2004,11(1):1-5. |
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| Authors: | Huang Jin-song Liu Yong Chen Shi-qi and Liu Zu-ming |
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| Affiliation: | (1) State Key Laboratory of Power Metallurgy, Central South University, 410083 Changsha, China |
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| Abstract: | The Al-Ni Y alloy powder was prepared by rapid solidification technology of inert gas atomization. The diameter of amorphous powder is less than 12 μm. The effects of atomization gas on cooling velocity, morphology,microstructure and microhardness of powder and fine powder ratio were investigated. The results show that the mor-phology, microstructure and microhardness of powder and fine powder ratio are affected by cooling velocity changed through atomization gas. The cooling velocity of inert gas atomization is more than 1 × 104 K/s. The larger the cool-ing velocity, the finer the powder, and the smoother the surface of powder; the smaller the diameter of powder, the larger the microhardness of powder. |
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| Keywords: | rapid solidification amorphous powder |
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