Ductile Ti-based bulk metallic glasses with high specific strength

J. M. Park, G. Wang, S. Pauly, N. Mattern, D. H. Kim, J. Eckert

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Ti-based bulk metallic glasses (BMGs) with large compressive plasticity were developed in the Ti-rich part of Vitreloy series BMGs (Ti65-x Zr x Cu9Ni8Be18 alloys with x = 0, 5, 10, 15, and 20). The current materials exhibit high fracture strength reaching ~2.3 GPa and plastic strains up to ~8.3 pct after partial substitution of Zr by Ti. The plasticity of the investigated alloys strongly depends on the Zr content, which affects the elastic constants, such as Poisson's ratio and shear modulus. This, in turn, has an impact on the shear transformation zone (STZ) volume and, hence, on the shear banding of the glasses.

Original languageEnglish
Pages (from-to)1456-1462
Number of pages7
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume42
Issue number6
DOIs
Publication statusPublished - 2011 Jun

Bibliographical note

Funding Information:
This work was supported by the Global Research Laboratory Program of the Korea Ministry of Education, Science and Technology. Stimulating discussions with J.H. Han, K.B. Kim, and R. Li are gratefully acknowledged. GW acknowledges the fellowship support from the Alexander von Humboldt Foundation. SP furthermore acknowledges the financial support granted by the program ‘‘Promotionsförderung des Cusanuswerks.’’

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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