Article
Chemistry, Multidisciplinary
Fucheng Li, Mingxing Li, Liwei Hu, Jiashu Cao, Chao Wang, Yitao Sun, Weihua Wang, Yanhui Liu
Summary: A discovery of Ta-rich metallic glasses with diamond-like wear properties is reported in this work. The discovered metallic glasses exhibit high hardness, high temperature stability, improved plasticity, and crack resistance. By employing deep indentation loading, the alloys with better plasticity and crack resistance can be efficiently identified. These findings suggest the potential of metallic glasses to substantially reduce friction and wear of metals in tribological applications.
Article
Metallurgy & Metallurgical Engineering
Hong Wu, Feng Xu, Jun-ye Ren, Xiao-dong Lan, Yong Yin, Lu-xin Liang, Min Song, Yong Liu, Jia Li, Qing-xiang Li, Wei-dong Huang
Summary: The study investigates the creep behavior of BMG at different loading rates, revealing that at low loading rates, serrated flow occurs while at high loading rates, homogeneous flow is observed. The rate-dependent creep behavior is attributed to the number of pre-existing major shear bands significantly influenced by the loading rate.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Nanoscience & Nanotechnology
Solene Comby-Dassonneville, Timothee Venot, Alejandro Borroto, Eva Longin, Christelle der Loughian, Benoit ter Ovanessian, Marie-Alix Leroy, Jean-Francois Pierson, Philippe Steyer
Summary: A combinatorial approach was used to identify compositional windows with optimized properties for ZrCuAg thin-film metallic glasses, revealing that antibacterial properties are influenced by the chemical composition, with silver contents higher than 12% exhibiting full bactericidal effects.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Tao Liang, Qing Yu, Ziliang Yin, Songyi Chen, Ye Liu, Yanping Yang, Hongbo Lou, Baolong Shen, Zhidan Zeng, Qiaoshi Zeng
Summary: This study investigates the spatial resolution of nanoindentation mapping on metallic glasses (MGs) using a Berkovich indenter. The results show that a maximum spatial resolution of approximately 200 nm can be achieved with a normalized indentation spacing of 10. These findings are important for the study of heterogeneity in MGs using nanoindentation.
Article
Materials Science, Ceramics
M. S. Z. Zhao, Z. L. Long, L. Peng
Summary: Nanoindentation tests were conducted on different bulk metallic glasses to determine their strain rate sensitivities of hardness, which were found to be negative. The variations in strain rate sensitivity values along with different factors were observed and discussed to understand the reasons for this negative strain rate sensitivity and its dependence on the composition and other factors of metallic glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Engineering, Mechanical
K. Tao, V. A. Khonik, J. C. Qiao
Summary: In this study, the effects of the structural energy states of Zr50Cu40Al10 metallic glass on its performance were investigated using depth-sensing nanoindentation. The shear transformation zone volume of the relaxed metallic glass is larger than that of as-cast one, while the strain rates sensitivity displays the opposite tendency. The plastic deformation in the creep stage of nanoindentation originates from the delayed plasticity inherited from the loading process. The creep depth shows strain rates and microstructural states dependence.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Chemistry, Physical
Zusheng Xiong, Pingjun Tao, Ziyun Long, Zhengyang Huang, Kunhui Long, Xuguang Zhu, Xi Xu, Huanhuan Deng, Haisheng Lin, Weiqiu Li
Summary: In this study, it was found that the mechanical properties of Zr-based alloys, especially the fracture strength, plasticity, indentation hardness, and elastic modulus, were improved by adding a small amount of Ta element.
Article
Chemistry, Physical
Yuexin Chu, Guishen Zhou, Shaoshan Wan, Yue Zhang, Fuyu Dong, Xiaoguang Yuan, Binbin Wang, Liangshun Luo, Yanqing Su, Weidong Li, Peter K. Liaw
Summary: The relationship between shear transformation zones (STZs) and serrated flow dynamics in metallic glasses (MGs) was analyzed using nanoindentation. Different plasticity MGs were studied, and two distinct types of serrated flow dynamics were identified. MGs with easily activated STZs or low loading rates exhibited a power-law distribution, indicating a self-organized critical state. In contrast, hard MGs or high loading rates showed a Gaussian distribution, indicating a chaotic state with reduced stresses required for plastic deformation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
V Jambur, C. Tangpatjaroen, J. Xi, J. Tarnsangpradit, M. Gao, H. Sheng, J. H. Perepezko, I Szlufarska
Summary: This study shows that minor alloying can enhance the strength of metallic glasses by increasing the chemical bond strength, which is distinct from changes in topological ordering. The addition of transition metals to Al-Sm based metallic glasses increased their hardness, mainly due to the strong bonding between transition metals and aluminum atoms. The effects of topology and chemistry on the mechanical properties of metallic glasses are independent of each other, providing insights for the design of metallic glasses with improved mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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
Materials Science, Multidisciplinary
Karuppasamy Pandian Marimuthu, Giyeol Han, Hyungyil Lee
Summary: The study investigates the effect of modulation ratio on the mechanical characteristics of multilayer Zr-based TFMG, demonstrating that appropriate selection of layer pattern and modulation ratio can improve mechanical performance. The proposed FE model can be utilized for achieving maximum mechanical performance of TFMG coated products.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Saade Abdalkareem Jasim, Muneam Hussein Ali, Zaid Hameed Mahmood, Mohammad Rudiansyah, Forat H. Alsultany, Yasser Fakri Mustafa, Montather F. Ramadan, Aravindhan Surendar
Summary: This paper investigates the influence of alloying composition on the nanomechanical properties of metallic glasses (MGs) through molecular dynamics simulation. The results show that the yielding event is enhanced with increasing Cu content, but there exists an optimal composition for maximizing the hardening effect. In Cu-rich MGs, pile-ups and dominant shear bands are formed, while in Zr-rich MGs, a net-like shear arrangement is observed under the indented site. Furthermore, the rate of change in polyhedron types during the indenting process strongly depends on the alloying compositions.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Guoxiang Shen, Weizhi Li, Zhichao Ma, Shengteng Zhao, Dongni Liu, Hongwei Zhao, Luquan Ren
Summary: This study investigates the depth-dependent mechanical properties of Zr-based bulk metallic glasses using the depth-sensitive nanoindentation technique. The results show that the surface hardness and elastic modulus increase, while fracture toughness decreases with decreasing indentation depth. This mechanical size effect is closely related to the evolution of shear bands at different depths.
Article
Chemistry, Physical
Hu Huang, Minqiang Jiang, Jiwang Yan
Summary: Nanoindentation experiments were conducted on a Zr-based metallic glass under various loading rates, revealing that increasing the loading rate weakened the size of serrated flow but kept the number stable, while maintaining similar shear band features around residual indents. These results challenge the previous understanding derived from experiments using the Berkovich indenter.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Fuyu Dong, Shaoshan Wan, Guishen Zhou, Ruize Niu, Yue Zhang, Xiaoguang Yuan, Binbin Wang, Liangshun Luo, Yanqing Su, Peng Kuang, Peng Zhang, Xinzhong Cao, Jun Cheng
Summary: Zr55Cu30Ni5Al10 metallic glasses were subjected to electrochemical hydrogenation treatment to investigate the effect of hydrogen content on their structure and properties. It was found that increased hydrogen content led to changes in the diffraction angle, hardness, and elastic modulus of the metallic glasses. XPS analysis indicated that hydrogen addition resulted in electron transfer and hardening of the material. Positron annihilation experiments showed that hydrogen occupied open volume defects and reduced the average annihilation lifetime of positron vacancies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
