Abstract
Structural heterogeneity of metallic glass is critical in cryogenic rejuvenation but chemical heterogeneity is seldom explored. Here we show that cryogenic rejuvenation of a nominal La60Al25Ni15 (at.%) metallic glass can be enabled with little impurities of Ce and Fe inside the material. Besides, these impurities can significantly enlarge the plastic strain conveyed by the material in bending. In addition, the heterogeneous structure is observed in the sample containing these chemical heterogeneities. Although the glass forming ability of the metallic glass is worsened, our study highlights the impact of chemical heterogeneity on the cryogenic rejuvenation of metallic glasses.
Published Version
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