| Synthesis and grain growth kinetics of in-situ FeAl matrix nanocomposites（ Ⅰ ）： Mechanical alloying of Fe-A1-Ti-B composite powder |
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| 引用本文： | 任榕 吴玉程 汤文明 汪峰涛 王涂根 郑治祥. Synthesis and grain growth kinetics of in-situ FeAl matrix nanocomposites（ Ⅰ ）： Mechanical alloying of Fe-A1-Ti-B composite powder[J]. 中国有色金属学会会刊, 2007, 17(5): 919-924. DOI: 10.1016/S1003-6326(07)60200-3 |
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| 作者姓名： | 任榕 吴玉程 汤文明 汪峰涛 王涂根 郑治祥 |
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| 作者单位： | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China |
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| 基金项目： | Project（050440704） supported by the Natural Science Foundation of Anhui Province, China; Project（103-037016） supported by the Technological Innovation Foundation of Hefei University of Technology, China |
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| 摘 要： | Three nanocrystalline alloys, FesoAlso, Fe42.5Al42.5Ti5B10 and Fe35Al35Ti10B20 （molar fraction, %）, were synthesized from elemental powders by high-energy ball milling. The structural evolutions and morphological changes of the milled powders were characterized by X-ray diffractometry（XRD）, transmission electron microscopy（TEM） and scanning electron microscopy（SEM）. The effects of different Ti, B additions on the structure and phase transformation in these alloys were also discussed. It is observed that the diffusion of AI, Ti, B atoms into Fe lattice occurs during milling, leading to the formation of a BCC phase identified as Fe（Al） or Fe（Al, Ti, B） supersaturated solid solution. Fe-based solid solution with nanocrystalline structure is observed to be present as the only phase in all the alloy compositions after milling. Furthermore, the contents of Ti, B affect the formation of mechanical alloying products, changes in the lattice parameter as well as the grain size.
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| 关 键 词： | FeAl复合材料 机械力学 合金 结构进化 |
| 收稿时间： | 2007-04-16 |
| 修稿时间： | 2007-04-16 |
Synthesis and grain growth kinetics of in-situ FeAl matrix nanocomposites(I): Mechanical alloying of Fe-Al-Ti-B composite powder |
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| REN Rong,WU Yu-cheng,TANG Wen-ming,WANG Feng-tao,WANG Tu-gen,ZHENG Zhi-xiang,. Synthesis and grain growth kinetics of in-situ FeAl matrix nanocomposites(I): Mechanical alloying of Fe-Al-Ti-B composite powder[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(5): 919-924. DOI: 10.1016/S1003-6326(07)60200-3 |
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| Authors: | REN Rong WU Yu-cheng TANG Wen-ming WANG Feng-tao WANG Tu-gen ZHENG Zhi-xiang |
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| Affiliation: | School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | Three nanocrystalline alloys, Fe50Al50, Fe42.5Al42.5Ti5B10 and Fe35Al35Ti10B20 (molar fraction,%), were synthesized from elemental powders by high-energy ball milling. The structural evolutions and morphological changes of the milled powders were characterized by X-ray diffractometry(XRD), transmission electron microscopy(TEM) and scanning electron microscopy(SEM). The effects of different Ti, B additions on the structure and phase transformation in these alloys were also discussed. It is observed that the diffusion of Al, Ti, B atoms into Fe lattice occurs during milling, leading to the formation of a BCC phase identified as Fe(Al) or Fe(Al, Ti, B) supersaturated solid solution. Fe-based solid solution with nanocrystalline structure is observed to be present as the only phase in all the alloy compositions after milling. Furthermore, the contents of Ti, B affect the formation of mechanical alloying products, changes in the lattice parameter as well as the grain size. |
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| Keywords: | FeAl composite mechanical alloying structural evolution nanocrystalline |
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