MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Work Softening Behavior of Zirconium-Aluminum-Nickel-Copper Bulk-Metallic-Glass by Rolling
Toshio NasuShiori KanazawaSayaka HayashizakiShangxun ZhaoSadayuki TakahashiTakeshi UsukiYasuo Kameda
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2015 Volume 56 Issue 2 Pages 249-252

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Abstract

Recently, “work softening behaviors” of bulk metallic glass (BMG) by shot peening was found. The purpose of this research is to investigate the work softening behavior of BMG by rolling at room temperature. The Vickers hardness of Zr55Al10Ni5Cu30 BMG decreased by first rolling, and then the hardness recovered slightly by second rolling. The density change of the BMG was measured before and after rolling. The density of the Zr55Al10Ni5Cu30 BMG increased slightly by first rolling. However, the density of the BMG decreased by second rolling. X-ray diffraction measurement was done for the BMG before and after rolling to certify the structure evolution occurred by rolling. Intensity of halo-pattern decreased slightly and a small peak appeared by rolling at room temperature.

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© 2015 The Japan Institute of Metals and Materials
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