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Ductile metallic glasses in supercooled martensitic alloys

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journal contribution
posted on 2024-06-05, 00:26 authored by J Das, KB Kim, Wei XuWei Xu, BC Wei, ZF Zhang, WH Wang, S Yi, J Eckert
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 of these ‘M-Glasses’.

History

Journal

Materials transactions

Volume

47

Pagination

2606-2609

Location

Sendai, Japan

Open access

  • Yes

ISSN

1345-9678

eISSN

1347-5320

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2006, The Japan Institute of Metals

Issue

10

Publisher

Japan Institute of Metals