TY - JOUR
T1 - Atomic-scale heterogeneity in large-plasticity Cu-doped metallic glasses
AU - Yuan, C.C.
AU - Lv, Z.W.
AU - Pang, C.M.
AU - Wu, X.L.
AU - Lan, S.
AU - Lu, C.Y.
AU - Wang, L.G.
AU - Yu, H.B.
AU - Luan, J.H.
AU - Zhu, W. W.
AU - Zhang, G. L.
AU - Liu, Q.
AU - Wang, Xun-Li
AU - Shen, B.L.
PY - 2019/8/25
Y1 - 2019/8/25
N2 - By using nanoindentation techniques combined with transmission electron microscope, wide-/small-angle X-ray scattering, and three-dimensional atom probe tomography, the sub-nanometer- to nanometer-length-scale structural heterogeneity due to the precipitation of Co(Fe)-rich clusters was observed in [(Co0.7Fe0.3)0.68B0.219Si0.051Nb0.05]100-xCux(x = 0.5)metallic glasses. Such short-range ordered structure promotes energy dissipation during deformation via regulating intrinsic elastic constants and hardness at the mesoscale, which contributes to the improved compressive plasticity of Cu-doped (Fe, Co)-based metallic glasses. Our work provides new evidence on atomic-scale heterogeneity in Cu-doped metallic glasses from the aspects of topological orders and microscopic mechanical responses.
AB - By using nanoindentation techniques combined with transmission electron microscope, wide-/small-angle X-ray scattering, and three-dimensional atom probe tomography, the sub-nanometer- to nanometer-length-scale structural heterogeneity due to the precipitation of Co(Fe)-rich clusters was observed in [(Co0.7Fe0.3)0.68B0.219Si0.051Nb0.05]100-xCux(x = 0.5)metallic glasses. Such short-range ordered structure promotes energy dissipation during deformation via regulating intrinsic elastic constants and hardness at the mesoscale, which contributes to the improved compressive plasticity of Cu-doped (Fe, Co)-based metallic glasses. Our work provides new evidence on atomic-scale heterogeneity in Cu-doped metallic glasses from the aspects of topological orders and microscopic mechanical responses.
KW - Deformation and plasticity
KW - Disordered structures
KW - Elastic moduli
KW - Metallic glasses
KW - X-ray scattering
UR - http://www.scopus.com/inward/record.url?scp=85066266587&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85066266587&origin=recordpage
U2 - 10.1016/j.jallcom.2019.05.282
DO - 10.1016/j.jallcom.2019.05.282
M3 - RGC 21 - Publication in refereed journal
SN - 0925-8388
VL - 798
SP - 517
EP - 522
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -