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, Physical
W. Porter Weeks, Katharine M. Flores
Summary: Researchers have used geometric alignment and density-based clustering algorithms to quantitatively describe the short-range atomic structure in the liquid state of five metallic glass-forming systems. They found that each liquid is composed of geometrically-similar atomic clusters, and the distribution of these clusters is inversely correlated to the glass-forming ability observed experimentally.
Article
Materials Science, Ceramics
Y. Tan, Y. W. Wang, X. W. Cheng, Q. Fu, Z. H. Xin, Z. Q. Xu, H. W. Cheng
Summary: The study found that appropriate Al substitution can improve the glass-forming ability, strength, and plasticity of amorphous alloys, but fracture strength decreases and no dynamic compression plasticity is observed during dynamic loading.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
Mehdi Malekan, Reza Rashidi, Mansoor Bozorg, Nick Birbilis
Summary: The effect of yttrium (Y) on the glass-forming ability (GFA), mechanical properties and corrosion of (Cu50Z-r43Al7)100-xYx alloys was studied. The addition of Y improved the GFA of Cu50Zr43Al7 alloy, with a GFA of 15 mm obtained for (Cu50Zr43Al7)98Y2. The bulk metallic glasses (BMGs) exhibited limited plastic strain but achieved high compressive fracture strength and Young's modulus. The corrosion resistance of the BMGs was improved by the addition of Y.
Article
Materials Science, Ceramics
Mehdi Malekan, Reza Rashidi, Saeed G. Shabestari, Juergen Eckert
Summary: In this study, the effect of different yttrium doping levels on the glass-forming ability of copper-zirconium-aluminum-based metallic glasses was investigated from thermodynamic and kinetic perspectives. The amorphous structure of the alloys was confirmed using various techniques, and the correlation between the forming ability and thermodynamics/kinetics factors was established through the analysis of thermal characteristics. The results showed that 2% yttrium doping significantly improved the glass-forming ability of the metallic glasses. Yttrium enhances the forming ability by promoting a more densely packed atomic configuration and scavenging oxygen as an undesirable element.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Engineering, Chemical
Chengcheng Liu, Xuandong Wang, Weidong Cai, Yazhou He, Hang Su
Summary: In this paper, a machine learning-based predictive model was established to predict the glass-forming ability (GFA) of metallic glasses (MGs) using experimental data. The model achieved high accuracy in predicting the glass state formation and the temperatures related to MGs. Additionally, feature selection and visualization analysis methods were used to improve the interpretability of the model. Finally, a genetic algorithm was applied to optimize alloy composition for high GFA.
Article
Chemistry, Physical
S. A. Uporov, R. E. Ryltsev, V. A. Bykov, N. S. Uporova, S. Kh Estemirova, N. M. Chtchelkatchev
Summary: Magnetic cooling is a promising eco-friendly technology that requires the search for novel functional materials. Gd-based metallic glasses show potential as solid-state refrigerants, but their magnetic properties can be improved. Through element substitution in the alloy components, it is possible to enhance glass-forming ability and overall performance of the materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Guannan Liu, Sungwoo Sohn, Sebastian A. Kube, Arindam Raj, Andrew Mertz, Aya Nawano, Anna Gilbert, Mark D. Shattuck, Corey S. O'Hern, Jan Schroers
Summary: Machine learning shows potential in addressing complex materials science problems, but physical insights are necessary to develop accurate and predictable models.
Article
Materials Science, Multidisciplinary
Yimeng Zhao, Xuan Li, Xiaobin Liu, Jiazi Bi, Yang Wu, Ruijuan Xiao, Ran Li, Tao Zhang
Summary: The development of Co-Ta-B-Si bulk metallic glasses with high glass-transition temperature, large compressive plasticity, high strength, and high glass-forming ability was achieved by accurately tuning the metalloid element contents of Si and B in the parental alloy. The improvement in plastic deformation was attributed to the self-organization behaviors of high-density shear bands.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
S. J. Wu, Z. Q. Liu, R. T. Qu, Z. F. Zhang
Summary: By establishing quantitative correlations among compositions, elastic constants, GFA, and mechanical properties of metallic glasses (MGs), it is possible to predict their performance in advance. Experimental data confirms the validity of this predictive approach. A strategy for designing MGs with optimal combinations of strength, toughness, and GFA is proposed to allow for high-throughput discovery of glass formers with excellent mechanical properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Thermodynamics
L. Lyubenova, V. Rangelova, M. Spassova, T. Spassov
Summary: A series of Zr-based glasses were obtained by rapid melt quenching and their thermal characteristics were determined. Glass forming ability criteria were applied to predict the glass forming ability of the alloys and study its dependence on the alloy composition. The variation in the glass forming ability was mainly due to difficulties in the crystallization process rather than the stability of the melts.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Y. X. Zhang, G. C. Xing, Z. D. Sha, L. H. Poh
Summary: A new two-step fused machine learning approach is proposed to accurately predict metallic glasses with robust glass-forming ability. Utilizing alloy compositions as the only input, the method integrates data of both castable and non-castable alloys to achieve good prediction results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Lukasz Szczepanski, Markus Bambach, Felix Jensch, Andrzej Ambroziak, Tomasz Kurzynowski
Summary: In recent years, Fe-based metallic glasses have been extensively researched for their favorable mechanical and magnetic properties. Breakthroughs have been made in producing these materials in Laser Powder Bed Fusion technology, allowing the production of elements of any shape. The microstructure of the manufactured parts plays a crucial role in determining their properties.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Hao-Ran Jiang, Jing-Yi Hu, Nico Neuber, Benedikt Bochtler, Bastian Adam, Sascha S. Riegler, Maximilian Frey, Lucas Ruschel, Wen-Fei Lu, Ai-Han Feng, Ralf Busch, Jun Shen
Summary: The addition of minor sulfur has both positive and negative effects on the glass-forming ability and thermal stability of Cu-Zr-Al alloys, with an optimal sulfur content of 0.75 at.% for the investigated alloys.
Article
Chemistry, Physical
Jaskaran Singh Saini, John P. Miska, Fuqiong Lei, Nicholas AuYeung, Donghua Xu
Summary: Metallic glasses, especially Hafnium based MGs, have superior properties to conventional crystalline metals/alloys, with HBMGs having the additional advantage of high density. However, their glass-forming ability is limited. Our discovery of two HBMGs with a critical casting diameter significantly higher than the current record allows for the production of bigger products and easier manufacturing/processing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)