Version 2 2024-06-05, 00:26Version 2 2024-06-05, 00:26
Version 1 2019-07-16, 13:59Version 1 2019-07-16, 13:59
journal contribution
posted on 2024-06-05, 00:26authored byJ 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’.