In-situ transmission electron microscopy analysis of the degree of heterogeneities in a metallic glass
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In: Intermetallics, Vol. 154.2023, No. March, 107807, 03.2023.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - In-situ transmission electron microscopy analysis of the degree of heterogeneities in a metallic glass
AU - Zhang, N. Z.
AU - Sun, Kang
AU - Şopu, Daniel
AU - Spieckermann, Florian
AU - Ma, Xindi
AU - Geng, Chuan
AU - Bian, Xilei
AU - Jia, Yandong
AU - Wang, Qing
AU - Wang, Gang
AU - Eckert, Jürgen
N1 - Publisher Copyright: © 2022 Elsevier Ltd
PY - 2023/3
Y1 - 2023/3
N2 - The most common strategy to enhance the plasticity of metallic glasses (MGs) is to synthesize MG composites with crystalline phases. Here, the evolution of crystallization and the correlation between void-like defects and crystallization for the as-spun and cryogenically-treated (CT) MGs are investigated under a rigorous annealing process conducted in-situ. The as-spun specimen maintains its amorphous structure with a relatively large size of nanoscale defects. However, crystallization is observed for the CT MG with a high concentration of nanoscale defects that decreases during the crystallization process. The crystallization develops readily in the CT MG due to the greater size of the ordered clusters, the higher concentration of seeding sites, and its greater nucleation rate. Our findings demonstrated cryogenic treatment could tune atomic rearrangements, which has guiding significance on designing MG composite with controlled length scales and distribution of crystalline inclusions.
AB - The most common strategy to enhance the plasticity of metallic glasses (MGs) is to synthesize MG composites with crystalline phases. Here, the evolution of crystallization and the correlation between void-like defects and crystallization for the as-spun and cryogenically-treated (CT) MGs are investigated under a rigorous annealing process conducted in-situ. The as-spun specimen maintains its amorphous structure with a relatively large size of nanoscale defects. However, crystallization is observed for the CT MG with a high concentration of nanoscale defects that decreases during the crystallization process. The crystallization develops readily in the CT MG due to the greater size of the ordered clusters, the higher concentration of seeding sites, and its greater nucleation rate. Our findings demonstrated cryogenic treatment could tune atomic rearrangements, which has guiding significance on designing MG composite with controlled length scales and distribution of crystalline inclusions.
KW - Crystallization
KW - Defect
KW - Fourier transform filtering analysis
KW - In-situ TEM
KW - Metallic glass
UR - http://www.scopus.com/inward/record.url?scp=85144428274&partnerID=8YFLogxK
U2 - 10.1016/j.intermet.2022.107807
DO - 10.1016/j.intermet.2022.107807
M3 - Article
AN - SCOPUS:85144428274
VL - 154.2023
JO - Intermetallics
JF - Intermetallics
SN - 0966-9795
IS - March
M1 - 107807
ER -
