In-situ A1/24Si Functional Graded Materials Prepared by Electromagnetic Separation  

作　　者：KeLI JunWANG DaSHU BaodeSUN YaoheZHOU 

出　　处：《Journal of Materials Science & Technology》2002年第5期385-386,共2页材料科学技术（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 59871029);the National Key Research Foundation of China (Grant No. G1999064900-4).

摘　　要：Cylinder-like in-situ AI/24Si FGMs were produced by using electromagnetic separating process. Si primary phase reinforced layer with volume fraction as high as 16 pct was formed at the outer region of the cylinder-like samples where the local hardness and wear resistance were enhanced remarkably. Moreover, both of strength and ductility in the inner region provided insurance of reliable strength for this as-cast gradient material. It indicated that general mechanical properties such as good wear resistance at the outer region and good ductility in the central part could be obtained with the optimized redistribution of the Si primary particles under the electromagnetic force.Cylinder-like in-situ AI/24Si FGMs were produced by using electromagnetic separating process. Si primary phase reinforced layer with volume fraction as high as 16 pct was formed at the outer region of the cylinder-like samples where the local hardness and wear resistance were enhanced remarkably. Moreover, both of strength and ductility in the inner region provided insurance of reliable strength for this as-cast gradient material. It indicated that general mechanical properties such as good wear resistance at the outer region and good ductility in the central part could be obtained with the optimized redistribution of the Si primary particles under the electromagnetic force.

关 键 词：FGMS IN-SITU Electromagnetic separation 

分 类 号：TF821[冶金工程—有色金属冶金]