Article
Nanoscience & Nanotechnology
Yuhui Zhu, Yongkang Zhou, Aimin Wang, Hong Li, Huameng Fu, Hongwei Zhang, Haifeng Zhang, Zhengwang Zhu
Summary: The formation and distribution of loose-packing and dense-packing regions in bulk metallic glasses (BMGs) can affect the macroscopic mechanical properties and the trade-off between strength and ductility. This study systematically investigates the structural heterogeneity caused by deep cryogenic treatment (DCT) and its effects on the deformation mechanisms in rejuvenated BMGs. The results suggest that the optimization of structural features, such as icosahedral short-range ordering (ISRO), can enhance the plasticity and strength of BMGs, leading to potential applications in designing BMGs with strength-ductility synergy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Yuhui Zhu, Weizhen Wang, Yuanyuan Song, Shiming Zhang, Hong Li, Aimin Wang, Haifeng Zhang, Zhengwang Zhu
Summary: This study reports the occurrence of atomic-scale structural clustering and atomic arrangements during isothermal annealing. The evolution of atomic-scale structures is closely related to composition variation and has important implications for the chemical and topological packing during the early crystallization stage of metallic glasses.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tianding Xu, Xiao-Dong Wang, Eric M. Dufresne, Yang Ren, Qingping Cao, Dongxian Zhang, Jian-Zhong Jiang
Summary: Anomalous fast atomic dynamics were discovered in a metallic glass with good glass forming ability, mainly attributed to the increased mobility of Cu atoms by Ag addition, leading to the formation of structural heterogeneity at the atomic level.
MATERIALS TODAY PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Xuelian Wu, Si Lan, Xiyang Li, Ming Yang, Zhenduo Wu, Xiaoya Wei, Haiyan He, Muhammad Naeem, Jie Zhou, Zhaoping Lu, Elliot Paul Gilbert, Dong Ma, Xun-Li Wang
Summary: This paper presents a new approach to study the crystallization of Zr45.5Cu45.5Al9 bulk metallic glass (BMG) during isothermal annealing. By analyzing the data from simultaneous differential scanning calorimetry and small angle neutron scattering measurements, the authors identified three stages in the crystallization process: incubation, amorphous-to-crystalline structural ordering, and continuous chemical redistribution. The findings were further confirmed by composition analysis using atom probe tomography, which revealed the formation of a transition region where Al was expelled into the matrix.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Devashish Rajpoot, R. Lakshmi Narayan, Long Zhang, Punit Kumar, Haifeng Zhang, Parag Tandaiya, Upadrasta Ramamurty
Summary: Fracture behavior of bulk metallic glass matrix composites with both transforming and non-transforming fi-Ti dendrites under shear and opening modes was examined, showing lower fracture toughness in mode II due to shear dominant stress state and considerable crack growth in this mode. Despite the ability of transforming dendrites to strain harden and enhance ductility, BMGCs reinforced with non-transforming dendrites exhibit higher toughness in both modes. Shear band patterns suggest identical fracture mechanism in BMGCs and BMGs, with differences rationalized by the effect of relaxation enthalpy and dendrites length scale.
Article
Materials Science, Multidisciplinary
Zhiyuan Huang, Jianan Fu, Xin Li, Wenxin Wen, Hongji Lin, Yan Lou, Feng Luo, Zhenxuan Zhang, Xiong Liang, Jiang Ma
Summary: This study presents a method of ultrasonic-assisted rapid cold welding of metallic glasses without using any additives, achieving stable bonding of MG interface under high-frequency ultrasonic vibration, low temperature and low stress conditions. The ultrasonic technology accelerates atomic diffusion process, enabling rapid bonding of different compositions of MGs and potential for tuning new materials with new performance.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Physical
Y. S. Luo, J. J. Li, Z. Wang, M. Zhang, J. W. Qiao
Summary: Based on a simple mean-field model, two distinct types of slip avalanches in serrated plastic flows of bulk metallic glasses were identified to differentiate the slipping modes of shear bands under various strain rates. Small avalanches propagate progressively, while large avalanches follow a simultaneous propagation. By defining a weakening parameter and critical size, researchers were able to characterize the completely disparate shearing modes, with larger weakening and lower critical sizes indicating more activated shear transformation zones, offering a new method to explore plasticity in bulk metallic glasses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Cheng Zhang, Di Ouyang, Simon Pauly, Lin Liu
Summary: Bulk metallic glasses (BMGs) as metallic materials without long-range order have attracted significant attention from academia and industry in the past three decades. The emerging 3D printing technology provides a viable route to overcome the challenges inherent in conventional processing routes and expand the applications of BMGs.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Article
Nanoscience & Nanotechnology
Limin Lai, Tianhao Liu, Xinghong Cai, Min Wang, Shengbiao Zhang, Wen Chen, Shengfeng Guo
Summary: The study introduces a series of low-cost refractory Mo-Co-B BMGs with enhanced GFA and high thermal stability, exhibiting exceptional hardness and Young's modulus.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
W. H. Zhou, N. T. Panagiotopoulos, A. L. Greer, Y. Li
Summary: A rejuvenated Zr-based bulk metallic glass was tested in tension and exhibited strain-hardening behavior. The plastic strain at failure reached 0.9%, which is considered high for metallic glasses. Comparisons with other alloys showed that the hardening rate of the metallic glass decreases rapidly with increasing strain, limiting its tensile plastic strain to approximately 1%. Rejuvenation delayed early catastrophic failure and resulted in changes in the fracture surface morphology.
SCRIPTA MATERIALIA
(2022)
Review
Metallurgy & Metallurgical Engineering
Shi Jie Bryan Bin, Kai Soon Fong, Beng Wah Chua, Manoj Gupta
Summary: Metallic biomaterials, including magnesium alloys, have been widely used in medical implants due to their excellent biocompatibility and similar mechanical properties to bone. However, the rapid degradation of magnesium alloys poses challenges for their long-term stability as implants. Researchers have been exploring the synthesis and characterization of Mg-based bulk metallic glasses to improve the corrosion resistance of magnesium alloys.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Navid Sohrabi, Jamasp Jhabvala, Guven Kurtuldu, Ruggero Frison, Annapaola Parrilli, Mihai Stoica, Antonia Neels, Jorg F. Loffler, Roland E. Loge
Summary: A high-density, crack-free, amorphous bulk metallic glass based on a precious metal was successfully produced via additive manufacturing, achieving excellent mechanical properties and mirror-like surface finish. By investigating the main processing parameters and applying various characterization techniques, efficient production of precious metal parts with enhanced mechanical properties was demonstrated, providing new insights for the manufacturing of precious metal components.
APPLIED MATERIALS TODAY
(2021)
Article
Materials Science, Multidisciplinary
Amir Rezvan, Elham Sharifikolouei, Viktor Soprunyuk, Wilfried Schranz, Juraj Todt, Alice Lassnig, Christoph Gammer, Nikolaus August Sifferlinger, Atacan Asci, Ilya Okulov, Sandra Schlogl, Jozef Keckes, Ziba Najmi, Andrea Cochis, Alessandro Calogero Scalia, Lia Rimondini, Baran Sarac, Juergen Eckert
Summary: The application of highly biocompatible advanced materials leads to fewer complications and more successful medical treatments. This study proposes a new type of metallic glass that can be used as an oral implant material, and it explores the processing methods to improve its specific properties. The results show that the processed material has higher thermomechanical stability and better cytocompatibility.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Wenzheng Wu, Xuechao Li, Qingping Liu, Jerry Ying Hsi Fuh, Aodu Zheng, Yiming Zhou, Luquan Ren, Guiwei Li
Summary: This paper reviews the forming principles and characteristics of additive manufacturing of metallic glass, and summarizes and introduces different manufacturing technologies. Moreover, the future development of the field of additive manufacturing of metallic glass is discussed.
MATERIALS TODAY ADVANCES
(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
Metallurgy & Metallurgical Engineering
Jiang You, Cheng Wang, Shun-Li Shang, Yipeng Gao, Hong Ju, Hong Ning, Yi Wang, Hui-Yuan Wang, Zi-Kui Liu
Summary: Tailoring phase formation in alloys to achieve desired mechanical properties, especially for complicated multi-phase alloys, is a long-sought goal. The nucleation of competitive crystalline phases during solidification depends on the nature of the liquid. In this study, ab initio molecular dynamics simulations were used to reveal the liquid configuration of Mg-Al-Ca alloys and its effect on the transformation of Ca-containing Laves phase from Al 2 Ca to Mg 2 Ca with increasing Ca/Al ratio ( r Ca / Al ).
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Hui Xue, Yongfeng Liang, Hui Peng, Yanli Wang, Shun-Li Shang, Zi-Kui Liu, Junpin Lin
Summary: In this study, a microstructural modification technique was used to improve the plasticity and interfacial cohesion of TiAl alloys by introducing Ti5Si3 and Ti2AlN precipitates using additive manufacturing techniques.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Shun -Li Shang, Yi Wang, Zi-Kui Liu
Summary: In this study, a method to quantify the degree of disorder using configurational entropy is proposed, which can be used to predict the macroscopic functionalities of materials. The capability of this approach is demonstrated by calculating Invar Fe3Pt and comparing the results with experimental data.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Songge Yang, Yi Wang, Zi-kui Liu, Brajendra Mishra, Yu Zhong
Summary: This study systematically investigates the stability, phonon spectra, thermodynamics, and temperature-dependent elasticity of subsystems of FCC FeNiCoCr MEAs using the ab initio approach. By utilizing the quasi-harmonic approximation and the innovative Zentropy theory, the thermodynamic and elastic properties of FeNi, NiCo, FeNiCo, and FeNiCoCr MEAs considering magnetic transition were successfully predicted. The predicted results are in good agreement with available experimental data and CALPHAD prediction.
Article
Materials Science, Multidisciplinary
Songge Yang, Yi Wang, Zi-Kui Liu, Yu Zhong
Summary: This study investigates the total energy, phonon spectra, and thermodynamic properties of different polymorphs of pure Fe using the ab initio approach. The energy vs. volume curves and phonon spectra obtained show good agreement with previous calculations and experimental data. The thermodynamic properties are estimated using the quasiharmonic approximation, and a superposition approach based on Zentropy theory is used to predict magnetic transition temperatures and thermodynamic properties of pure Fe. The results demonstrate good agreement with experimental data and CALPHAD modeling.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
A. Leineweber, M. Hoppe, S. Martin, C. Schimpf, S. L. Shang, Z. K. Liu
Summary: The reactive interaction between Sn-rich solders and transition metals at high temperatures leads to the formation of intermetallic phases. This study focuses on the formation of intermetallics between Co and Sn under solid-state conditions. The crystal structures and microstructures were characterized using X-ray diffraction and electron microscopy techniques. The results revealed different crystal structures for CoSn3 and CoSn4 compared to previous studies. The criteria for accurate phase identification using XRD and EBSD methods were elaborated, including distinguishing different polytypes of CoSn3 or CoSn4.
Article
Engineering, Mechanical
Adnan Eghtesad, Qixiang Luo, Shun -Li Shang, Ricardo A. Lebensohn, Marko Knezevic, Zi-Kui Liu, Allison M. Beese
Summary: This study combines a full-field crystal plasticity model with a first principles-informed dislocation density hardening law and a machine learning approach to investigate the microstructural features correlated with micromechanical field localization in polycrystalline Ni. The results show that regions near grain boundaries, higher Schmid factors, low slip transmissions, and high intergranular misorientations are more prone to being micromechanical hotspots. The integration of physics-based crystal plasticity with machine learning provides insights into the initiation zones of micromechanical damage in polycrystalline metals.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Chemistry, Analytical
Stephanie Castro Baldivieso, Nathan D. Smith, Zi-Kui Liu, Hojong Kim
Summary: The electrochemical behavior of Gd(III) ions in molten LiCl-KCl-GdCl3 was studied. A single reduction-oxidation wave was observed, confirming a single-step, 3-electron transfer Gd(III)/Gd transition. The cathodic peak potential showed minimal change over a wide range of scan rates, indicating reversible electrode process. The diffusivity values of Gd(III) ions were determined, and the Gd-Bi alloy reference electrode exhibited high stability.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Zi-Kui Liu, Shun-Li Shang, Jinglian Du, Yi Wang
Summary: The thermodynamics of ferroelectric materials and their ferroelectric to paraelectric (FE-PE) transitions are often described by phenomenological Landau theory and more recently by effective Hamiltonian and various potentials. In this study, the zentropy theory is proposed to predict the FE-PE transition without parameter fitting. By considering the total entropy of a system as a weighted sum of entropies of configurations and the statistical entropy among the configurations, the zentropy theory accurately predicts the FE-PE transition in PbTiO3 using first-principles domain wall energies as the only input parameter.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Yi Wang, Yihuang Xiong, Tiannan Yang, Yakun Yuan, Shun -Li Shang, Zi-Kui Liu, Venkatraman Gopalan, Ismaila Dabo, Long-Qing Chen
Summary: This study presents a first-principles-based approach to calculate finite temperature thermal and electronic transport properties. It can be used to model and understand structural evolution during electronic, magnetic, and structural phase transitions at the mesoscale. A computationally tractable model is introduced to estimate electron relaxation time and its temperature dependence. The model is applied to Ca3Ru2O7 to investigate the electrical resistivity across the electronic phase transition at 48 K. The quasiharmonic phonon approach and Boltzmann transport theory are employed to account for thermal expansion and calculate the temperature dependence of electrical conductivity.
Article
Nanoscience & Nanotechnology
Bo Pan, Hui Sun, Dongyue Xie, Shun-Li Shang, Nan Li, Blair E. Carlson, Yumeng Li, Zi-Kui Liu, Jingjing Li
Summary: This study investigates the correlations between galvanic corrosion, intermetallic compound formation, and welding energy input with regards to the initiation and propagation of micro-cracks in micropillars of resistant spot welding joints between aluminum and steel. The results show that higher welding energy leads to more severe corrosion and easier cracks initiation and propagation. Micropillars from the high welding energy region have a higher average yielding stress due to the thicker intermetallic compound layer.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Chemistry, Physical
Kaixin Liang, Hui Zhang, Yongfeng Liang, Shun-Li Shang, Zi-Kui Liu, Junpin Lin
Summary: By coordinating nitrogen doping and pore structure, N-doped porous carbon materials were fabricated with highly comparable properties to commercial Pt/C catalysts. These carbon catalysts exhibited high catalytic activity and peak power density, making them highly feasible for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
