离心铸造铝-铁自生梯度复合材料梯度结构研究  

Gradient Structure of Al-Fe In-Suit Gradient Composites Fabricated by Centrifugal Casting

作　　者：左孝青[1] 张强[1] 张召亮[1] 

机构地区：[1]昆明理工大学材料与冶金工程学院,昆明650093

出　　处：《材料导报》2003年第10期83-84,87,共3页Materials Reports

基　　金：云南省应用基础研究基金2000E0003Z

摘　　要：为获得具有较好梯度结构的梯度材料,提出并采用了一种新的离心力-多孔金属中间层法制备铝-铁自生(in suit)梯度复合材料,进行了制备过程的实验研究。主要内容包括:工艺(材料)设计、正交实验主体、数据处理及结果分析等,重点进行了工艺参数对梯度结构影响的分析。实验结果表明,在离心转速、中间层厚度、金属温度、预热温度4个工艺参数中,中间层的极差为次大值,表明中间层的存在对梯度结构的形成有较大的影响。In order to get gradient composites with ideal structure,an innovative technique,namely centrifugal force-porous metal middle layer process, was developed. Some steps in the centrifugal casting process for fabricating Al-Fe in suit gradient composites,such as process and materials design,measurement of gradient structure, and result analysis, were studied in this work. The experimental results show that among four process parameters (centrifugal speed,thickness of porous metal middle layer,preheating temperature and metal temperature),the porous metal middle layer's effect is ranked second. It is therefore concluded that porous metal middle layer is one of the keys to getting gradient composites with ideal structure in this innovative process.

关 键 词：离心铸造技术 铝-铁自生梯度复合材料 梯度结构 离心力-多孔金属中间层法 

分 类 号：TB33[一般工业技术—材料科学与工程]