Article
Chemistry, Physical
A. Sharma, S. S. Hirmukhe, Sree Harsha Nandam, Horst Hahn, I. Singh, R. Lakshmi Narayan, K. Eswar Prasad
Summary: The strain rate sensitivity of a binary Cu60Zr40 nanoglass and metallic glass was studied using nanoindentation. The metallic glass exhibited noticeable displacement bursts at low loading rates, while the nanoglass showed a near homogeneous plastic flow. Both materials displayed a decrease in hardness with increasing loading rate, indicating negative strain rate sensitivity. The nanoglass had a higher strain rate sensitivity than the metallic glass.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Abhilash Gunti, Jayanta Das
Summary: This study reports the effect of testing conditions on the nanomechanical behavior of the surface and inner core of as-cast plates of various bulk metallic glasses. The presence of solid-liquid like regions in the glassy structure affects the deformation mechanism, leading to the formation of shear bands. The rate sensitivity and deformation mechanism are influenced by the size and dynamics of shear transformation zones.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
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
Chemistry, Physical
Ting Guo, Song Ke, Qing Zhou, Yongnan Chen, Ping Huang
Summary: This study investigated the annealing-induced hardening effect in electro-deposited nanocrystalline Ni and NiFe thin films. The results showed that the hardening effect does not increase with decreasing grain size, but rather peaks at a critical grain size before decreasing. This can be attributed to the more pronounced grain-boundary mediated plasticity in extremely fine nanograins.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Abhilash Gunti, Jayanta Das
Summary: A series of instrumented nanoindentation tests were conducted on Zr52.5Cu18Ni14.5Al10Ti5 and Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 as-cast and cold rolled samples to investigate the indentation size effect in three perpendicular planes. The results showed that the hardness, reduced modulus, and dynamic hardness decreased with increasing indentation depth in the rolling-width, normal-rolling, and normal-width planes. The size effect was analyzed using various models, indicating that dynamic mechanical softening and friction between the indenter and specimen were the underlying reasons for the observed indentation size effect.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Yuanli Xu, Jiahe Song, Wenli Ma, Xinli Kou
Summary: The study investigated the serrated flow behavior of Zr61.7Al8Ni13Cu17Sn0.3 bulk metallic glass with different aspect ratios, finding that the behavior changes from uniform to nonuniform as the aspect ratio increases. Moreover, the normalized stress drop magnitude increases with increasing aspect ratios.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
C. F. Ma, P. Huang, F. Wang
Summary: The study evaluated the effects of positive and negative flow unit sizes on strain rate sensitivity (SRS) by altering the microstructural features of magnetron sputtering CuZr MG, showing that the sizes of flow units play crucial roles in determining the magnitude of SRS.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Defeng Song, Linfang Qian, Jili Wu
Summary: This study investigates the room-temperature nanoindentation creep behaviors of as-cast and aged CuZrTiNb bulk metallic glasses, showing that ageing influences the hardness, creep displacement, and resistance to localized plastic deformation of the materials. Ageing decreases the resistance to localized plastic deformation but increases the creep resistance of current bulk metallic glass. The quantity of large holes decreases while that of small voids increases with ageing, as revealed by compliance and retardation spectra analysis.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Nanoscience & Nanotechnology
Silvia Pomes, Nozomu Adachi, Masato Wakeda, Takahito Ohmura
Summary: This study found a precursor phenomenon to incipient plasticity before the first serration in Zr50Cu40Al10 at% bulk metallic glass via nanoindentation testing.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Mechanical
K. Tao, F. C. Li, Y. H. Liu, E. Pineda, K. K. Song, J. C. Qiao
Summary: Understanding the microstructural heterogeneity of metallic glasses is crucial for understanding their physical and mechanical properties. Through structural relaxation and cold rolling, the state of metallic glasses can be modified, thereby altering their microstructural heterogeneity. The study shows that enhancing microstructural heterogeneity plays a significant role in tailoring the mechanical behavior of metallic glasses.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Materials Science, Multidisciplinary
Xiang Wang, Zhi Qiang Ren, Wei Xiong, Si Nan Liu, Ying Liu, Si Lan, Jing Tao Wang
Summary: By studying the behavior of bulk metallic glass (BMG) under different processing methods, it is found that internal stress plays a critical role in the negative strain rate sensitivity (SRS) observed in structurally heterogeneous BMG alloys and composites.
Article
Materials Science, Ceramics
Ming Liu, Dongyang Hou, Chenghui Gao
Summary: Berkovich nanoindentation experiments were conducted on Zr55Cu30Al10Ni5 bulk metallic glass, revealing the relationships between indentation variables and properties such as hardness and elastic modulus. A new methodology for determining fracture toughness based on total work of indentation was proposed.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
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
Chemistry, Physical
Priyanka Saini, R. Lakshmi Narayan
Summary: The variations in local yield strength and plasticity of a Zr-based bulk metallic glass at different fictive temperatures were studied using nanoindentation and microindentation. The results showed an increase in incipient plastic events and subsequent pop-ins with increasing fictive temperature. Statistical analysis of strength scatter was used to determine the activation parameters for shear transformation zones (STZs) in all specimens. The increase in shear yield strength and plasticity with increasing fictive temperature was explained by considering the linear accumulation of STZs to form a shear band.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Karina E. Avila, Vardan Hoviki Vardanyan, Tong Zhu, Stefan Kuechemann, Marek Smaga, Herbert M. Urbassek
Summary: In this study, both experiments and molecular dynamics simulations were used to explore the deformation behavior of metallic glasses subjected to previous tensile deformation. The experimental investigations were carried out on a Zr67Cu10.6Ni9.8Ti8.8Be3.8 (wt%) sample, while the simulations were performed on a Cu64.5Zr35.5 sample. Plasticity was induced in the specimens through tensile deformation and further studied using cyclic indentation. The results from both experiments and simulations showed qualitative agreement in terms of the measured macroscopic properties and revealed the evolution of microscopic properties in different regions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
M. C. Li, M. Q. Jiang, G. Li, L. He, J. Sun, F. Jiang
Article
Materials Science, Ceramics
M. C. Li, M. Q. Jiang, G. Ding, Z. H. Peng, F. Jiang, L. He, J. Sun
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2017)
Article
Nanoscience & Nanotechnology
M. C. Li, M. Q. Jiang, S. Yang, F. Jiang, L. He, J. Sun
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2017)
Article
Nanoscience & Nanotechnology
M. C. Li, M. Q. Jiang, F. Jiang, L. He, J. Sun
SCRIPTA MATERIALIA
(2017)
Article
Chemistry, Physical
Chunze Li, Qiang Li, Mingcan Li, Chuntao Chang, Hongxiang Li, Yaqiang Dong, Yanfei Sun
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Ceramics
Zhuanhui Yue, Qiang Li, Wenbiao Zhang, Mingcan Li, Haiming Duan, Chuntao Chang, Hongxiang Li
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2019)
Article
Materials Science, Multidisciplinary
Kenan Wu, Cong Liu, Qiang Li, Juntao Huo, Mingcan Li, Chuntao Chang, Yanfei Sun
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Chemistry, Physical
Nuerbiya Aihemaiti, Qiang Li, Mingcan Li, Tuo Wang, Chuntao Chang, Xu Ma
Article
Materials Science, Multidisciplinary
Mingcan Li
Review
Chemistry, Multidisciplinary
Zexuan Zhang, Peilong Li, Xin Zhang, Cun Hu, Yuwen Li, Bin Yu, Ning Zeng, Chao Lv, Jiangfeng Song, Mingcan Li
Summary: With the energy crisis and environmental pollution worsening, it is urgent to develop renewable and clean energy sources. Layered double hydroxides (LDHs) supporting noble metal catalysts show remarkable catalytic activity and good stability in electrolyzing water to produce hydrogen, demonstrating promising applications in the field.
