용융 접합한 주철 - Al 합금의 금속간화합물 층 형성 거동에 미치는 열처리의 영향

강성민; 한광식; 강용주; 김광원; 임예라; 문지선; 손광석; 김동규

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자료유형: 학술저널

저자정보: 강성민 (동아대학교 신소재공학과) 한광식 (동아대학교 신소재공학과) 강용주 (동아대학교 신소재공학과) 김광원 (동아대학교 신소재공학과) 임예라 (동아대학교 신소재공학과) 문지선 (동아대학교 신소재공학과) 손광석 (동아대학교 신소재공학과) 김동규 (동아대학교 신소재공학과)

저널정보: 한국주조공학회 한국주조공학회지 (주조) 한국주조공학회지 제32권 제1호

발행연도: 2012.1

수록면: 50 - 56 (7page)

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Fusion bonding of cast iron and Al alloy is an effective way to improve the properties such as low inertia, high efficiency and corrosion resistance in machinery parts. In case of fusion bonding, intermetallic compound layers are formed at the interface between cast iron and Al alloy interface. It is important to control the intermetallic compound layers for improving bonding strength. The formation behavior of intermetallic compound layer by heat treatment has been investigated. Heat treatment was performed at temperature from $600^{\circ}C$ to $800^{\circ}C$ with $100^{\circ}C$ interval for an hour to investigate the phase transformation during heat treatment. Heat treated specimens were analyzed by using FE-SEM, EPMA and EDS. The EPMA/WDS results revealed that various phases were formed at the interface, which exhibited 4 distinct intermetallic compound layers such as ${\tau}_6-Al_{4.5}FeSi$, ${\tau}_2-Al_3FeSi$, ${\tau}_{11}-Al_5Fe_2Si $and ${\eta}-Al_5Fe_2$. Also, fine precipitation of ${\tau}_1-Al_2Fe_3Si_3$ phase was formed between ${\tau}_{11}$ and ${\eta}$ layer. The phase fraction in intermetallic compound layer was changed by heat treatment temperature. At $600^{\circ}C$, intermetallic compound layer of ${\tau}_6$ phase was mainly formed with increasing heat treatment time. With increasing heat treatment temperature to $800^{\circ}C$, however, ${\tau}_2$ phase was mainly distributed in intermetallic compound layer. ${\tau}_1$ phase was remarkably decreased with increasing heat treatment time and temperature.

#Intermetallics #Bonding #Phase transformation #Cast iron #Al alloy #Heat treatment

참고문헌 (14)

참고문헌 신청

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