| 喷射成形制备La62Al15.7(Cu,Ni)22.3块体非晶合金 |
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| 引用本文： | 刘宗锋,杨滨,张勇,张济山.喷射成形制备La62Al15.7(Cu,Ni)22.3块体非晶合金[J].北京科技大学学报,2007,29(4):394-397. |
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| 作者姓名： | 刘宗锋 杨滨 张勇 张济山 |
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| 作者单位： | 1. 北京科技大学新金属材料国家重点实验室,北京,100083
2. 北京科技大学新金属材料国家重点实验室,北京,100083;中国科学院国际材料物理中心,沈阳,110016 |
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| 摘 要： | 采用喷射沉积成形方法制备了La62Al15.7(Cu,Ni)22.3块体非晶合金. 结果表明,沉积态La62Al15.7(Cu,Ni)22.3非晶合金比以往报道的采用甩带法制备的同成分非晶合金具有更大的约化玻璃转变温度和更宽的过冷液相区. 非晶的晶化实验表明,晶化初期多种晶相同时结晶析出. 483K退火时,在非晶基体中析出Al和AlNi. 503K退火时进一步析出La和未知相. La62Al15.7(Cu,Ni)22.3非晶合金在573K退火没有新相产生,合金晶化态组织由Al、AlNi、La和未知相组成.
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| 关 键 词： | 块体非晶合金 喷射沉积成形 退火处理 晶化 喷射成形 块体非晶合金 Preparation spray forming 相组成 组织 基体 退火 结晶析出 晶相 实验 晶化 过冷液相区 约化玻璃转变温度 金具 成分 沉积态 结果 法制 喷射沉积成形 |
| 修稿时间： | 2005-12-12 |
Preparation of a La62Al15.7(Cu,Ni)22.3 bulk amorphous alloy by spray forming |
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| LIU Zongfeng,YANG Bin,ZHANG Yong,ZHANG Jishan.Preparation of a La62Al15.7(Cu,Ni)22.3 bulk amorphous alloy by spray forming[J].Journal of University of Science and Technology Beijing,2007,29(4):394-397. |
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| Authors: | LIU Zongfeng YANG Bin ZHANG Yong ZHANG Jishan |
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| Institution: | 1. The State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China; 2. International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | A La62Al15.7(Cu,Ni)22.3 bulk amorphous alloy was prepared by spray forming.Experimental results show that the reduced glass transition temperature and super-cooled liquid region of the La62Al15.7(Cu,Ni)22.3 bulk amorphous alloy prepared by spray forming are larger than those of the melt-spun alloy with the same composition reported previously.The crystallization behavior of the as-deposited alloy was investigated by DSC and XRD in order to reveal characteristics of this technique.It shows that several phases precipitate simultaneously during the early crystallization process.When annealed at 483 K,Al and AlNi precipitates from the amorphous matrix,while La and certain unknown phase appear subsequently when the annealing temperature is 503 K.No other phase precipitates from the matrix when the alloy is annealed at 573 K.The microstructure of the crystallized sample consists of Al,AlNi,La and a kind of unknown phase. |
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| Keywords: | bulk amorphous alloy spray forming annealing crystallization |
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