原位枝晶增强Dy-Fe-Al非晶基复合材料  

In-Situ Dendrite Reinforced Dy-Fe-Al Amorphous Matrix Composites

作　　者：孟力凯[1] 赵威[1] 何冰[1] 武晓峰[1] 

机构地区：[1]辽宁工学院材料与化学工程学院,辽宁锦州121001

出　　处：《中国稀土学报》2007年第6期703-706,共4页Journal of the Chinese Society of Rare Earths

基　　金：辽宁省自然科学基金(20032137)资助项目

摘　　要：采用铜模喷铸法制备出了原位枝晶增强块状Dy-Fe-Al非晶基复合材料,对该类合金的显微组织特征和相组成进行了分析,并对其室温压缩性能进行了测试。结果表明,该类复合材料的显微组织主要是由非晶组成的基体以及韧性α-Dy枝晶相组成。它们在室温表现出较好的力学性能,其压缩断裂强度最高可达1063 MPa。α-Dy相和非晶基体的有效承载能力及α-Dy相对剪切带及裂纹扩展的有效抑制作用是其根本原因。The dendrite reinforced Dy-Fe-Al amorphous matrix composites were prepared by coppermould casting method. The alloys were investigated in terms of microstructure, phase constitution and compression property. The results indicated that the microstructures of the alloys consist of metallic glass ma-trix and α-Dy dendritic phase. The composites exhibited good mechanical properties with compressive fracture strength of 1063 MPa, which was attributed to effective bearing-load ability and restricting to the expanding of shear bands and cracks.

关 键 词：Dy-Fe-Al 非晶 复合材料 力学性能 稀土 

分 类 号：TB383[一般工业技术—材料科学与工程]