Imprinting bulk amorphous alloy at room temperature

Song Yi Kim, Eun Soo Park, Ryan T. Ott, Thomas A. Lograsso, Moo Young Huh, Do Hyang Kim, Jürgen Eckert, Min Ha Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We present investigations on the plastic deformation behavior of a brittle bulk amorphous alloy by simple uniaxial compressive loading at room temperature. A patterning is possible by cold-plastic forming of the typically brittle Hf-based bulk amorphous alloy through controlling homogenous flow without the need for thermal energy or shaping at elevated temperatures. The experimental evidence suggests that there is an inconsistency between macroscopic plasticity and deformability of an amorphous alloy. Moreover, imprinting of specific geometrical features on Cu foil and Zr-based metallic glass is represented by using the patterned bulk amorphous alloy as a die. These results demonstrate the ability of amorphous alloys or metallic glasses to precisely replicate patterning features onto both conventional metals and the other amorphous alloys. Our work presents an avenue for avoiding the embrittlement of amorphous alloys associated with thermoplastic forming and yields new insight the forming application of bulk amorphous alloys at room temperature without using heat treatment.

Original languageEnglish
Article number16540
JournalScientific reports
Volume5
DOIs
Publication statusPublished - 2015 Nov 13

All Science Journal Classification (ASJC) codes

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    Kim, S. Y., Park, E. S., Ott, R. T., Lograsso, T. A., Huh, M. Y., Kim, D. H., Eckert, J., & Lee, M. H. (2015). Imprinting bulk amorphous alloy at room temperature. Scientific reports, 5, [16540]. https://doi.org/10.1038/srep16540