발간논문

Home > KJMM 논문 > 발간논문

Vol.32, No.1, 64 ~ 74, 1994
Title
TEM Study on the Structural similarity between Al13Fe4 and decagonal Phase in rapidly solidified Al - Fe alloys
김도경 D . H . Kim
Abstract
Quasicrystalline and quasicrystal-related crystalline phases in rapidly solidified Al-Fe alloys have been investigated by a detailed TEM(transmission electron microscopy). Rapidly solidified Al-10at %Fe mainly consists of α-Al and microquasicrystalline phase. The decagonal phase particles with a dendritic shape are also present as a primary solidification product in the relatively slowly cooled region of the ribbon. Rapidly solidified Al-20at%Fe consists of α-Al and Al_(13)Fe₄ phase. The Al_(13)Fe₄ phase particles have a dendritic shape with ten branches due to (201) and (100) ten fold twinning of Al_(13)Fe₄ monoclinic structure. Detailed SADP(selected area electron diffraction pattern) analysis has shown that there exists a close similarity between the diffraction characteristics of the decagonal phase and Al_(13)Fe₄. The present study also shows that the quasicrystalline structure of the decagonal phase decomposed into ten fold twinned Al_(13)Fe₄ structure with heat treatment.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.