| Title |
A Study on the Microstructural Characteristics of Rapidly Solidified Al - Fe Alloys (1) ( Solidification Microstructure and Phase Analysis ) |
| Authors |
김도향(D . H . Kim); 이호인(H . I . Lee) |
| Abstract |
Solidification microstructures and phases in rapidly solidified Al-5, 10wt%Fe alloys have been investigated by TEM bright field and dark field imaging techniques and electron and X-ray diffraction techniques. Rapid solidification of Al-5, 10wt%Fe alloys produces various metastable and stable phases, such as Al_mFe, Al_6Fe and Al_(13)Fe₄. In addition to these phases, clusters of randomly oriented few ㎚ scale particles exist in the form of fine cellular network with α-Al or primary spherical particles. Solidification microstructures of the rapidly solidified Al-5, 10wt%Fe alloys consist of various combination of primary phases such as Al_(13)Fe₄, Al_mFe and cluster of ㎚ scale particles, and cellular/dendritic structures such as fine cellular network structure of ㎚ scale particle clusters and α-Al and cellular structure of Al_mFe and α-Al, depending upon alloy compositions and local cooling rates. |