Article
Materials Science, Ceramics
Shuangshuang Chen, Kai Qi, Jun Yin, Jiahua Zou, Peidi Song, Guosheng Peng
Summary: The authors presented a series of monolithic Zr-Cu-Ni-Ti-Al bulk glassy alloys, showing significant room-temperature plasticity and high glass-forming ability. The plasticity of the alloy increases with decreasing Cu content, while the GFA gradually improves upon substitution of Cu for Zr.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Jessica Dornelas Silva, Gisele Fernandes Chaves Macieira, Dilson Silva dos Santos, Leandro de Arruda Santos, Vicente Tadeu Lopes Buono
Summary: Ti52-xNi38Cu10Nbx alloys with Nb additions were produced and their phase constitution and morphology were investigated. The study demonstrated the importance of metastable phases and Nb content in the solidification sequence, phase distribution, and morphology of the alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Wenfei Lu, Jo-Chi Tseng, Aihan Feng, Jun Shen
Summary: The study aimed to clarify the structural origin of the enhancement in glass-forming ability of binary NiNb metallic glasses. Ni62.5Nb37.5 alloy exhibited the best glass-forming ability and the densest atomic-packing structure among the four components, with a larger fraction of full icosahedral clusters. The glass structure in Ni62.5Nb37.5 MG was a heterogeneous mixture of interpenetrating icosahedral clusters, forming a chain-like network structure in the matrix. These Ni-centered icosahedra polyhedra played an essential role in controlling GFA.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Xuan Liu, Xingfu Wang, Yongli Si, Fusheng Han
Summary: The Al70Fe12.5V12.5Ni5, Al70Fe12.5V12.5Zr5, and Al70Fe12.5V12.5Nb5 alloys prepared by mechanical alloying were studied to investigate the influence of Zr, Nb, or Ni addition on the glass-forming ability of Al-Fe-V amorphous alloys. The Al70Fe12.5V12.5Ni5 alloy exhibited higher glass-forming ability and activation energies of crystallization compared to the other two alloys. Analysis showed that the effective atomic size ratio value was more significant than the values of mixture enthalpy in determining the glass-forming ability of these amorphous alloys.
Article
Materials Science, Ceramics
D. A. Milkova, A. I. Bazlov, E. N. Zanaeva, A. Yu. Churyumov, I. V. Strochko, E. V. Ubyivovk, A. Inoue
Summary: The magnetic properties of amorphous Fe38Ni38B12P5Si3Nb3Cu1 alloy ribbons have been studied. The addition of Cu and Nb to the alloy system changed the crystallization process, resulting in excellent soft magnetic properties, low coercive force and high effective permeability. The further increase in annealing temperature caused the precipitation of nanoscale fcc particles, forming a nanostructure alloy with good soft magnetic properties. The synthesis of these new Fe-Ni-based glassy and nanocrystalline [fcc(Fe,Ni) + glass] alloy ribbons with ultrasoft magnetic properties is promising as a new type of energy-saving soft magnetic material.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
Jeongsoo Kim, Yongjoo Kim, Wontae Kim, Dohyang Kim
Summary: This study investigates the use of (Ni0.35Ti0.30Cu0.15Zr0.20)(100-x)Si-x (x = 0, 0.5, 1.0, 2.0 at%) alloy as a metallic glass precursor for a superelastic alloy, finding that the addition of Si improves glass forming ability and stabilizes the supercooled liquid. The fabrication of millimetre-scale Ni-Ti-Cu-Zr-Si metallic glass was achieved by hot pressing overlapped as-cast plates, with parameters relevant to superelastic effects remaining almost constant.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Y. Feng, Z. C. Yan, Q. Chen, H. Zhang, Z. G. Qi, H. Z. Liu, Y. W. Bai, W. M. Wang
Summary: It is found in this study that the glass-forming ability and soft magnetic properties of Fe-based ribbons can be significantly improved by adding Si, while the mechanical properties are also significantly enhanced. This will help in exploring a new type of Fe-based amorphous alloy with excellent performance.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
A. V. Maiorova, T. V. Kulikova, V. A. Bykov
Summary: This study proposes a new model for predicting the compositions of metallic glasses, with validation on the Hf-Cu-Al(Ti,Ni) systems. By searching for the minimum product of P-HSS and Gamma parameters using new parameters Theta(X-Y)(X), Theta(X-Y)(Y), we predict the regions of glass-forming compositions. Additionally, the proposed model predicts amorphous compositions in metallic systems by analyzing P-HSS versus D-max. Hf0.23Cu0.65Ti0.12, Hf0.54Cu0.18Ni0.28, Hf0.42Cu0.48Al0.10 were identified as the compositions with the best glass-forming ability (GFA). These findings offer prospects for the development of reliable theoretical methods for predicting new metallic glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Liangzhao Huang, Kan Ma, Lisa T. Belkacemi, Marie Loyer-Prost, Estelle Meslin, Elin Toijer, Luca Messina, Christophe Domain, Julien Vidal, Maylise Nastar
Summary: A systematic atom probe tomography study was conducted on dilute Fe-Ni and Ni-Ti model alloys to investigate radiation-induced segregation (RIS). The study revealed fluctuations in solute local concentration and the influence of dislocation loop population size and density on these fluctuations. Additionally, the impact of post-treatment parameters on the extracted segregation profiles was highlighted.
Article
Materials Science, Ceramics
A. Maiorova, T. Kulikova, A. S. Bykov
Summary: It has been shown that traditional parameters are not suitable for predicting the compositions of bulk metal glasses with high glass- forming ability in the Zr-Co-Al system. A new computational approach has been developed to accurately determine the compositions of BMGs with the maximum critical diameter. The thermodynamic mixing functions for the glass-forming Zr-Co-Al system were calculated for the first time, revealing a relationship between thermodynamic and geometric factors.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Biochemistry & Molecular Biology
Egor Kashkarov, Dmitriy Krotkevich, Maxim Koptsev, Sergei Ognev, Leonid Svyatkin, Nahum Travitzky, Andrey Lider
Summary: This study investigated the application of high-entropy alloys in hydrogen separation membranes, revealing the influence of different compositions and lattice structures on hydrogen localization and diffusivity. A comparison of hydrogen permeability among different alloys was also conducted.
Article
Materials Science, Multidisciplinary
Lucas. M. Ruschel, Oliver Gross, Benedikt Bochtler, Bosong Li, Bastian Adam, Nico Neuber, Maximilian Frey, Sergej Jakovlev, Fan Yang, Hao-Ran Jiang, Bernd Gludovatzc, Jamie. J. Kruzic, Ralf Busch
Summary: Ni-Nb-based bulk glass-forming alloys have excellent mechanical properties, but limited glass-forming ability. This study shows that minor additions of P and partial substitution of Nb by Ta can significantly enhance the glass-forming ability. The modified alloys exhibit high strength, extended plasticity, increased hardness, and an extended supercooled liquid region.
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
Nanoscience & Nanotechnology
Jiro Kitagawa, Masaki Fukuda, Satoshi Fukuda, Kenta Fujiki, Yuki Nakamura, Terukazu Nishizaki
Summary: We report the discovery of ferromagnetism in the cubic CsCl-type Ti21 similar to 25Nb20 similar to 24Cr5 similar to 10Ru similar to 49 multicomponent alloy. The purest sample exhibits ferromagnetism with a Curie temperature of 38 K. The study also reveals the ferromagnetic exchange interaction between the localized Cr magnetic moments. Furthermore, the effect of elemental substitution on the ferromagnetic behavior is investigated.
Article
Nanoscience & Nanotechnology
Huan Li, Yongkang Zhou, Lili Yu, Qi Chen, Weizheng Liu, Shuai Zeng, Huiming Zhang, Yuhui Zhu, Hongwei Zhang, Haifeng Zhang, Zhengwang Zhu
Summary: Hierarchical eutectic high entropy alloys have distinguished mobility and castability, fine lamella structure, and excellent compression property but face challenges. A hierarchical eutectic Ni3FeTi3HfNb2 high entropy alloy composed of B2 intermetallic compounds and disordered body-centered cubic (BCC) phases was successfully developed using the partial similar substitution method. It exhibits outstanding compression property with a high yield strength (σs) of 1407 MPa, a large fracture strain of 22.1%, and a large elastic strain of 3.0%. The combination of high strength and good ductility shows promising industrial applications. Moreover, the anisotropy and the relationships among microstructure evolution, mechanical property, and Nb concentration are systematically discussed.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
