3D Interpenetrating Hybrid Network of Rigid Phases in an AlSi10Cu5NiFe Piston Alloy

被引:8
作者
Asghar, Z. [1 ]
Requena, G. [1 ]
Boller, E. [2 ]
机构
[1] Vienna Univ Technol, Inst Mat Sci & Technol, A-1040 Vienna, Austria
[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源
PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY | 2010年 / 47卷 / 09期
关键词
AL-SI ALLOYS; MICROSTRUCTURE; TOMOGRAPHY; EVOLUTION; ELEMENTS;
D O I
10.3139/147.110092
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
The three dimensional architecture of an AlSi10Cu5NiFe piston alloy in as-cast condition is characterized qualitatively and quantitatively by means of synchrotron tomography and light optical tomography. The same sample is used to correlate and combine the results obtained using both techniques. Synchrotron tomography reveals the long-range interconnectivity, volume fraction and shape of different aluminides present in the studied alloy. The morphology of individual aluminides and their contiguity between each other as well as with the eutectic Si is studied by light optical tomography. The eutectic Si and the Fe-aluminides show a considerable fraction of regions with platelet-like morphologies while the Cu-aluminides and Ni-aluminides show a large fraction of region with convex saddle and convex cylindrical morphologies. The aluminides and the eutectic Si form approximate to 18 vol. % three dimensional hybrid network with a long-range contiguity and interconnectivity located in the interdendritic space.
引用
收藏
页码:471 / 486
页数:16
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