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CONTINUOUS FABRICATION OF BULK AMORPHOUS ALLOY SHEETS BY TWIN-ROLL STRIP CASTING

Title
CONTINUOUS FABRICATION OF BULK AMORPHOUS ALLOY SHEETS BY TWIN-ROLL STRIP CASTING
Authors
Lee, JGLee, HOh, YSLee, SKim, NJ김낙준
Date Issued
Jan-2006
Publisher
ELSEVIER SCI LTD
Abstract
Twin-roll strip casting was utilized to fabricate the sheet products of Zr- and Cu-base bulk amorphous alloys with quite different glass forming abilities (GFAs). Simulation of the solidification behavior of the these amorphous forming alloys during twin-roll strip casting shows that suitable cooling rate can be achieved by twin-roll strip casting to form amorphous structure through the thickness of sheet. Optimum twin-roll strip casting conditions have been suggested based on the simulation results. Actual twin-roll strip casting shows that both Zr-base alloy with high GFA and Cu-base alloy with much less GFA can be strip cast forming amorphous structure. The results indicate that the twin-roll strip casting is a viable process for continuous fabrication of sheets of bulk amorphous alloys with a wide range of critical cooling rates. (c) 2006 Elsevier Ltd. All rights reserved.
Keywords
glasses, metallic; casting; microstructure; GLASS-FORMING ABILITY; METALLIC-GLASS; MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; PHASE; CU47TI34ZR11NI8; MICROSTRUCTURE; THERMODYNAMICS; CONDUCTIVITY; PLASTICITY
URI
http://oasis.postech.ac.kr/handle/2014.oak/29547
DOI
10.1016/J.INTERMET.2
ISSN
0966-9795
Article Type
PROCEEDINGS PAPER
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