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A group of ductile metallic glasses prepared by modifying local structure of icosahedral quasicrystals |
Qi Qiao(乔琪)1, Ji Wang(王吉)1, Zhengqing Cai(蔡正清)1, Shidong Feng(冯士东)1,3, Zhenqiang Song(宋贞强)1, Benke Huo(霍本科)1, Zijing Li(李子敬)2,†, and Li-Min Wang(王利民)1,‡ |
1 State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China; 2 Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China; 3 Hebei Key Laboratory for Optimizing Metal Product Technology and Performance, Yanshan University, Qinhuangdao 066004, China |
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Abstract Inspired by research into the association between icosahedral local orders and the plasticity of metallic glasses (MGs), beryllium (Be) is added to the icosahedral quasi-crystal forming alloy Zr40Ti40Ni20. In this way, bulk metallic glasses (BMGs) with favorable compressive plasticity are fabricated. Therein, the icosahedral quasi-crystalline phase is the main competing phase of amorphous phases and icosahedral local orders are the main local atomic motifs in amorphous phases. The alloys of (Zr40Ti40Ni20)76Be24 and (Zr40Ti40Ni20)72Be28 with their greater plastic strain capacity show similar characteristics to highly plastic amorphous systems: The serrated flow of compression curves always follows a near-exponential distribution. The primary and secondary shear bands intersect each other, bifurcate, and bend. Typical vein patterns are densely distributed on the fracture surfaces. The relaxation enthalpy of four MGs is linearly correlated with the plastic strain, that is, the greater the relaxation enthalpy, the larger the plastic strain.
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Received: 22 May 2023
Revised: 14 July 2023
Accepted manuscript online: 18 July 2023
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PACS:
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64.70.pe
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(Metallic glasses)
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46.35.+z
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(Viscoelasticity, plasticity, viscoplasticity)
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82.56.Na
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(Relaxation)
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Fund: This work was supported by the National Key R&D Program of China (Grant No. 2018YFA0703602), the National Natural Science Foundation of China (Grant Nos. 51871193, 52271155 and 52271154), the Natural Science Foundation for Excellent Young Scholars of Hebei Province (Grant No. E2021203050), the Hundred Talent Program of Hebei Province (Grant No. E2020050018), and the Hebei Province Innovation Ability Promotion Project (Grant No. 22567609H). |
Corresponding Authors:
Zijing Li, Li-Min Wang
E-mail: lizijing_sh@163.com;Limin_Wang@ysu.edu.cn
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Cite this article:
Qi Qiao(乔琪), Ji Wang(王吉), Zhengqing Cai(蔡正清), Shidong Feng(冯士东), Zhenqiang Song(宋贞强), Benke Huo(霍本科), Zijing Li(李子敬), and Li-Min Wang(王利民) A group of ductile metallic glasses prepared by modifying local structure of icosahedral quasicrystals 2023 Chin. Phys. B 32 116401
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