Article
Chemistry, Physical
V. Semin, J. Jiang, V. I. Polkin, M. Saito, Y. Ikuhara, D. V. Louzguine-Luzgin
Summary: This study investigates the crystallization behavior of Ti-Ni-Cu glassy alloys with the addition of transition metals Cr, Mn, and Fe, which alters the transformation temperature and heat effects. Crystallization in the Fe-bearing alloy initiates on the free surface, leading to strong <100> texture formation, while Mn and Cr-containing samples undergo crystallization within the entire volume.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Sidra Jilani, Leah S. Koloadin, David M. Miskovic, Kevin J. Laws
Summary: Magnesium-based metallic glasses have been developed with high casting thicknesses and excellent mechanical properties, suitable for use as resorbable biological implant materials. The alloys exhibit promising potential in the field of biomaterials.
SCRIPTA MATERIALIA
(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
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.
Article
Materials Science, Multidisciplinary
J. Ding, A. Inoue, S. L. Zhu, S. L. Wu, E. Shalaan, A. A. Al-Ghamdi
Summary: This study investigated the effects of increased aluminum content on the glass-forming ability, microstructure, phase stability, mechanical properties, and deformation behaviors of Zr-rich Zr-Cu-Al alloys in bulk metallic glass composites (BMGCs). It was found that higher aluminum content improved the glass-forming ability of the alloys, leading to the fabrication of BMGCs with enhanced performance. The Zr-rich Zr-Cu-Al BMGCs exhibited a large fracture strain and high fracture strength under compression, with superior plastic deformation capabilities attributed to factors such as the formation of shear bands and interactions between crystals and shear bands.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
D. V. Louzguine-Luzgin, E. N. Zanaeva, F. R. Pratama, T. Wada, S. Ito
Summary: The structural features of Pd42.5Cu30Ni7.5P20 and Pt42.5Cu27Ni9.5P21 metallic glasses were examined using high-resolution transmission electron microscopy. Pd42.5Cu30Ni7.5P20 exhibited true bulk glass-forming behavior without crystalline particles/nuclei, while Pt42.5Cu27Ni9.5P21 was a crystal growth-controlled bulk glass-former containing nanoparticles with a different chemical composition and an average size of about 1 nm. These structural differences influenced the mechanical properties at room temperature. Thermodynamic calculations supported the observed features.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Mechanical
Qing Zhou, Weichao Han, Dawei Luo, Yin Du, Jiyang Xie, Xian-Zong Wang, Qiguang Zou, Xiaoxing Zhao, Haifeng Wang, Ben D. Beake
Summary: The addition of Fe to Zr-Cu-Ni-Al bulk metallic glasses (BMGs) leads to the formation of a second glassy phase, which enhances plasticity and wear resistance. This dual-phase structure promotes multiple shear bands, increased toughness, and oxidative wear, ultimately improving the overall wear performance of the BMGs.
Article
Chemistry, Physical
C. Liu, A. Inoue, F. L. Kong, S. L. Zhu, E. Shalaan, A. Al-Ghmadi, A. L. Greer
Summary: The glass-forming ability, thermal stability, and mechanical properties of new Zr-rich alloys were evaluated. Melt-spinning produced glassy and amorphous phases, which showed good bending plasticity after annealing. The precipitate dispersions in the amorphous phases contributed to high strength and plastic strain. These findings are significant for the engineering application of Zr-based bulk metallic glasses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Xiang Li, Ke Yang, Bing Li, YanHong Li, XinHui Fan
Summary: New high-entropy bulk metallic glasses (HE-BMGs) with high glass-forming ability and high-density were prepared by copper mold casting. The partial substitution of Be or Zr (Ti) by Hf improved the glass-forming ability, strength, and plasticity of HE-BMGs. The high-entropy effect in current alloys led to sluggish diffusion, increased crystallization growth resistance, and thermal stability.
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, Ceramics
Aytekin Hitit, Ziya Ozgur Yazici, Pelin Ozturk, Bugrahan Eryesil, Nusrettin Barut, Hakan Sahin
Summary: The addition of tantalum up to 8 at.% increases the glass forming ability (GFA). The alloy with 8 at.% Ta has the highest GFA and its critical thickness is 1.5 mm. Thermal and mechanical properties of the alloys improve with tantalum additions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Yanfang Wang, Jiajia Si, Yudong Si, Zhiqiang Shi
Summary: This paper investigates the design of high entropy bulk metallic glasses (HE-BMGs) and their performance in electrochemical corrosion. The results show that the designed HE-BMGs have a large glass forming ability and a wide crystallization region, and exhibit good corrosion resistance in corrosive fluids.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
S. Leila Panahi, Jordina Fornell, Catalin Popescu, Eloi Pineda, Jordi Sort, Pere Bruna
Summary: New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy, resulting in extremely hard materials through structural relaxation and nanocrystallization. The study explored the effects of composition and annealing treatments on structure and mechanical properties, finding that the relative amount of B and Si determines the main nanocrystalline phase and influences mechanical behavior.
Article
Chemistry, Physical
Changjiu Chen, Zheng Yang, Bangjie Yin, Akihisa Inoue, Jinyong Zhang, Weiming Yang, Ze Sun, Qiaowen Luo, Zheng Chen, Yezeng He, Baolong Shen
Summary: The relaxation behavior and thermal stability of GdxNi20Al80-x (x = 50, 60, 65, 70 at%) metallic glasses were studied. The Gd70Ni20Al10 alloy exhibited the most significant relaxation phenomenon.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
S. Xu, J. Pons, R. Santamarta, I Karaman, O. Benafan, R. D. Noebe
Summary: This study reports the existence of a strain glass state induced by the precursor stages of H-phase precipitation in Ni-Ti-Zr shape memory alloys, with superelastic effect observed in compression. The material exhibits recoverable strain levels over 4% with little temperature dependence of the stress-strain curves.
