Ductile metallic glasses in supercooled martensitic alloys

J. Das*, K. B. Kim, W. Xu, B. C. Wei, Z. F. Zhang, W. H. Wang, S. Yi, J. Eckert

*Corresponding author for this work

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

We report ductile bulk metallic glasses based on martensitic alloys. The slowly cooled specimens contain a mixture of parent 'austenite' and martensite phase. The slightly faster cooled bulk metallic glasses with 2-5 nm sized 'austenite'-like crystalline cluster reveal high strength and large ductility (16%). Shear bands propagate in a slither mode in this spatially inhomogeneous glassy structure and undergo considerable 'thickening' from 5-25 nm. A 'stress induced displacive transformation' is proposed to be responsible for both plasticity and work-hardening-like behavior or these 'M-Glasses'.

Original languageEnglish
Pages (from-to)2606-2609
Number of pages4
JournalMaterials Transactions
Volume47
Issue number10
DOIs
Publication statusPublished - Oct 2006
Externally publishedYes

Keywords

  • Bulk metallic glass
  • Deformation
  • Mechanical properties
  • Phase transformation
  • Solidification

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    Das, J., Kim, K. B., Xu, W., Wei, B. C., Zhang, Z. F., Wang, W. H., ... Eckert, J. (2006). Ductile metallic glasses in supercooled martensitic alloys. Materials Transactions, 47(10), 2606-2609. https://doi.org/10.2320/matertrans.47.2606