Article
Nanoscience & Nanotechnology
Limin Lai, Tianhao Liu, Xinghong Cai, Min Wang, Shengbiao Zhang, Wen Chen, Shengfeng Guo
Summary: The study introduces a series of low-cost refractory Mo-Co-B BMGs with enhanced GFA and high thermal stability, exhibiting exceptional hardness and Young's modulus.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Tianqing Li, Hongxiang Zong, Fuhai Zhao, Xiangdong Ding, Turab Lookman, Jun Sun
Summary: The calorimetric and dynamical glass transitions are decoupled in high entropy metallic glasses (HEMGs), and the underlying mechanism and connection to atomic structure are not understood. Molecular dynamic simulations are performed to investigate the glass transition behavior of different HEMG model systems. It is found that the effect of mismatch entropy plays a critical role in decoupling vitrification kinetics/α-relaxation in HEMGs, and the atomic size difference contributes significantly to the sluggish diffusion and decreased dynamic heterogeneities.
Article
Materials Science, Ceramics
R. A. Konchakov, A. S. Makarov, G. V. Afonin, J. C. Qiao, M. G. Vasin, N. P. Kobelev, V. A. Khonik
Summary: The high-frequency shear modulus of different metallic glasses was measured and fluctuations in thermal energy near the glass transition were observed, suggesting characteristics of a continuous phase transition.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Solene Comby-Dassonneville, Gabrielle Tiphene, Alejandro Borroto, Gaylord Guillonneau, Lucian Roiban, Guillaume Kermouche, Jean-Francois Pierson, Jean-Luc Loubet, Philippe Steyer
Summary: This study reports the use of a new high-temperature scanning indentation technique to monitor the physical changes in thin-film metallic glasses in situ during heat treatment. The mechanical evolution and physical evolutions of ZrCu TFMG were successfully characterized, including the metallic glass-to-supercooled liquid transition and crystallization process. The HTSI results showed excellent agreement with other analytical methods and provided key kinetic information on small-scale systems.
APPLIED MATERIALS TODAY
(2021)
Article
Metallurgy & Metallurgical Engineering
Zeng Qiaoshi, Yin Ziliang, Lou Hongbo
Summary: Metallic glasses possess unique properties due to their densely packed and disordered atomic structures. Recent studies have shown polyamorphic transitions in metallic glasses, sparking excitement and interest in understanding their underlying mechanisms and property changes. These transitions offer new possibilities for tunable properties in materials science.
ACTA METALLURGICA SINICA
(2021)
Article
Materials Science, Ceramics
Lu Li, Lina Hu, Lunyong Zhang, Yongjiang Huang, Kaikai Song, Hongxian Shen, Sida Jiang, Zheng Wang, Xi Zhao, Jianfei Sun
Summary: The research on liquid-liquid transition (LLT) has greatly enhanced the understanding of the liquid structure and evolution, with significant implications for glass formation. However, the impact of LLT on vitrification and glass structures is still unclear due to experimental challenges in exploring LLT in high-temperature melts. This study examines LLT in Zr-Cu-Ni-Al melts and reveals that superheated fragility is closely related to glass-forming ability. The competition between crystal-like and icosahedral-like clusters affects the crystallization behavior and changes in both medium-range order structure and short-range order structure indicate LLT.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
A. Lindsay Greer, Miguel B. Costa, Owain S. Houghton
Summary: There have been remarkable advances in the field of metallic glasses over the last 50 years, including an expanded range of compositions, improved production and shaping techniques, and the discovery of property combinations offering unparalleled performance. Ongoing research continues to provide fundamental insights into the structure and properties of glasses and liquids. This article focuses on the latest advances in understanding and the rapidly expanding prospects for applications.
Article
Materials Science, Multidisciplinary
Tianding Xu, Xiao-Dong Wang, Eric M. Dufresne, Yang Ren, Qingping Cao, Dongxian Zhang, Jian-Zhong Jiang
Summary: The shape memory effect (SME) is found in annealed metallic glasses (MGs), where atoms can return to low-energy configurations through heating, extending the potential applications of MGs as functional materials.
Article
Materials Science, Multidisciplinary
Qing Du, Xiong-Jun Liu, Yihuan Cao, Qiaoshi Zeng, Hui Wang, Yuan Wu, Suihe Jiang, Xiaobin Zhang, Zhao-Ping Lu
Summary: In this study, the chemical dependence of thermally induced reentrant glass transition in (PdNi)(100-x)P-x MGs was systematically investigated. It was found that the reentrant glass transition in alloys with a P content of < 17 at% is suppressed with an increase in P. The composition dependence of the reentrant glass transition originates from the rearrangement of the metal-metalloid bond (i.e., Pd/Ni-P bonds) and the consequent short-range ordering to medium-range ordering.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hongzhen Li, Zhen Li, Jian Yang, Hai Bo Ke, Baoan Sun, Chen Chen Yuan, Jiang Ma, Jun Shen, Wei Hua Wang
Summary: Developing materials with excellent properties has always been a relentless pursuit of mankind. Metallic glasses (MGs) could be the ideal metallic materials if their size could be scaled up to be comparable to traditional metals. Various methods have been attempted to address this challenge, including thermodynamics-based alloy, 3D printing, and the recent artificial intelligence-guided optimal alloy. In this study, a simple and flexible approach was demonstrated to manufacture giant MGs (GMGs) with diameters more than 100 mm through the thermo-joining process. The jointed GMG samples exhibit almost the same performance as the as-cast ones, and the ability to manufacture complex 3D components such as the Chinese Zodiacs was also demonstrated. This approach may overcome the longstanding problem of glass forming ability (GFA) limitations in alloy systems and pave the way for fabricating size unlimited MGs.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Physical
P. F. Wang, H. Y. Jiang, J. A. Shi, M. Liu, L. Gu, W. Zhou, J. Orava, Y. H. Sun, W. H. Wang, H. Y. Bai
Summary: The newly discovered color-changing metallic glasses can continuously and spontaneously change color under ambient conditions, mainly created by light interference and optical bandgap energy of the oxide layer. The unique qualities of these glasses, including continuous oxidation, uniform oxide layer thickness, and fast color-changing capabilities, are connected to the oxygen affinity of cerium, the glassy structure, and the yttrium dopant regulation. This work not only introduces a new direction for metal oxidation, but also highlights new applications for metallic glass.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Tian Li, Ying Shen, Guangping Zheng
Summary: A new exponent beta has been proposed to characterize the glass forming ability of metallic nano-glasses (NGs) and metallic glasses (MGs), showing that higher beta values indicate enhanced GFAs in NGs with a higher volume fraction of glass-glass interfaces (GGIs), which can potentially overcome the size limitation issue in MGs.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Tianding Xu, Xiao-Dong Wang, Eric M. Dufresne, Yang Ren, Qingping Cao, Dongxian Zhang, Jian-Zhong Jiang
Summary: Anomalous fast atomic dynamics were discovered in a metallic glass with good glass forming ability, mainly attributed to the increased mobility of Cu atoms by Ag addition, leading to the formation of structural heterogeneity at the atomic level.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Physical
C. Y. Liu, Y. X. Zhang, C. Y. Zhang, G. Yuan, J. Kang, Z. L. Li, R. D. K. Misra
Summary: The study investigates the impact of Ni content on Fe-based bulk metallic glasses, finding that moderate Ni addition can enhance glass forming ability and soft magnetic properties, while excessive Ni leads to performance deterioration. This research highlights the potential of current Fe-based BMGs for both structural and magnetic functional applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
C. J. Chen, R. Xu, B. J. Yin, Y. Z. He, J. Y. Zhang, P. Zhang, B. L. Shen
Summary: The dynamic mechanical relaxation processes of metallic glasses were investigated in this study. The results showed that alpha relaxation was observed in the HE-MGs and Vit1 MG. The activation energies of the HE-MGs were higher than that of the Vit1 MG. The dynamic mechanical properties were discussed in light of the KWW and QPD models, indicating different dynamic heterogeneities and defect concentrations in the four MGs.
