발간논문

Home > KJMM 논문 > 발간논문

Vol.30, No.11, 1384 ~ 1393, 1992
Title
A Study on the Microstructure of Spray Formed Al - Fe Alloys
오규환K . H . Oh, 김원태W . T . Kim, 이호인H . I . Lee
Abstract
The effects of melt flow rate and alloy composition on the microstructure of spray formed Al-Fe billets have been studied by using a combination of optical and transmission electron microscopy. Three transient regions in void distribution and solidification microstructure appear throughout the billet thickness : initial transient region dominated by chill effect by cold substrate ; quasi-steady state of microstructure beyond the initial transient region ; and final transient region due to decrease in melt flow rate. Large inter-connected void and fine microstructure developed first near the substrate and changes into different types of void and coarsened microstructure depending on thermal condition on the deposit top surface. In the deposit of Al-Fe alloy, monoclinic Al_(13)Fe₄precipitate is often observed with occasional observation of metastable orthorhombic Al_6Fe precipitate formed during flight.
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.