In situ study on medium-range order evolution during the polyamorphous phase transition in a Pd-Ni-P nanostructured glass
Journal Article
·
· Journal of Materials Science and Technology
- Nanjing University of Science and Technology (China)
- City University of Hong Kong (China)
- Spallation Neutron Source Science Center, Dongguan (China)
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- City University of Hong Kong Dongguan Research Institute (China)
- Jiangsu University, Zhenjiang (China)
- City University of Hong Kong (China); City University of Hong Kong Shenzhen Research Institute (China)
- Nanjing University of Science and Technology (China); City University of Hong Kong (China); City University of Hong Kong Shenzhen Research Institute (China)
Engineering multiscale structural hierarchies in glassy alloys enable a broad spectrum of potential applications. Metallic glasses were born in hierarchical structures from atomic-to-nanometer scales. However, the frozen-in structures in traditional metallic glasses prepared by rapid quenching techniques are challenging to tailor. Here, we show that a Pd40Ni40P20 bulk nanostructured glass of polyamorphous interfacial structures was prepared by inert-gas condensation with a laser evaporation source, and its multiscale structures could be engineered. In-situ scattering experiment results reveal polyamorphous phase transitions occurred in the interfacial regions, which are accompanied by the evolution of medium-range order and the nanoscale heterogeneous structures during the condensation process of glassy nanoparticles under high pressure and the following heating process. Moreover, changes in the cluster connectivity resulting from repacking of the local ordering induced by pressure and temperature could be observed. The thermophysical and mechanical properties, including boson peaks, hardness, and elasticity modulus, could be changed as a function of heat-treatment parameters. In conclusion, our findings would shed light on the synthesis of bulk nanostructured glassy alloys with tailorable thermodynamic and dynamical behavior as well as mechanical properties based on the understanding of metastability for polyamorphous interfacial phases.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Fundamental Research Funds for the Central Universities; Ministry of Science and Technology of the Republic of China (MOST); National Natural Science Foundation of China (NSFC); National Natural Science Foundation of Jiangsu Province; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 2222692
- Journal Information:
- Journal of Materials Science and Technology, Journal Name: Journal of Materials Science and Technology Vol. 125; ISSN 1005-0302
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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