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 halopattern decreased slightly and a small peak appeared by rolling at room temperature. [doi:10.2320/matertrans.M2014342]
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