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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Warm Rolling Technique for Amorphous Alloy Strip...

Warm Rolling Technique for Amorphous Alloy Strip Produced by Ultrarapid Cooling-Thermal Spraying Based on Hydraulic-Stress-Induced Structural Relaxation

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Abstract:

Amorphous alloys have many superior properties such as high tensile strength,anticorrosion and easy soft-magnetism, but few amorphous alloys have been used as final productsbecause they lack plasticity at room temperature. Thus, we have developed a new amorphous alloyrolling method. Although the amorphous alloy was brittle at room temperature, it has deformedplastically by semisolid rolling under hydraulic stress. After being subjected to ultrarapidcooling-thermal spraying, amorphous alloy strips were rolled with a ditch roll in the viscoelasticregion below the glass transition temperature. Using this rolling method, we successfully preformedstrips for use in fuel cell separator. This rolling technique is based on the principle of stress-inducedstructural relaxation under hydraulic stress.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

1920-1924

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.1920

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Online since:

May 2014

Authors:

R. Kurahashi*, Toshiharu Morimoto, Y. Fukudome, S. Ishiura

Keywords:

Amorphous Alloy, Hydraulic Stress, Stress-Induced Structural Relaxation, Viscoelasticity, Warm Rolling

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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