Article
Chemistry, Physical
Ming Yang, Yibo Zhang, Jie Dong, Yan Huang, Zhichao Lu, Liang Wang, Xuerui Wei, Zhengdong Fu, Jinkui Zhao, Wenli Song, Wei Li, Yuntao Liu, Dong Ma
Summary: A multi-element microalloying strategy has been used to improve the microstructure and mechanical properties of CuZr-based bulk metallic glass composites. Microalloying effectively refines the CuZr phase and results in finely dispersed B2 crystallites embedded in the BMG matrix, leading to the formation of centimeter-sized BMGCs with good mechanical properties.
Article
Materials Science, Multidisciplinary
Liang Deng, Long Zhang, Konrad Kosiba, Rene Limbach, Lothar Wondraczek, Gang Wang, Dongdong Gu, Uta Kuehn, Simon Pauly
Summary: Monolithic bulk metallic glass and glass matrix composites with a relative density above 98% were produced by selective laser melting of Cu46Zr46Al8(at.%). The addition of B2 CuZr nanocrystals increased structural heterogeneity, affecting the mechanical properties of the materials. Despite the presence of crystals and high overall free volume content, all additively manufactured samples failed at lower stress than the as-cast glass due to increased brittleness caused by relatively large pores and higher oxygen content after selective laser melting.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Huwen Ma, Yanchun Zhao, Xue Wang, Dong Ma, Yanfei Gao
Summary: Recent experiments have shown some success in improving the ductility of bulk metallic glass (BMG) composites containing metastable crystalline second-phase particles capable of TRIP-induced plasticity. The mechanisms behind these improvements are quantitatively investigated through micromechanical finite element simulations, revealing that for the metastable second phases to enhance the BMG composite ductility, the strength of the BMG matrix must be between that of soft austenite and hard martensite phases. This leads to effectively confining shear bands near the second phase, reducing maximum shear band strain, and thereby improving tensile ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Shuo Li, Ping Huang, Fei Wang
Summary: This study demonstrates that pronounced beta-relaxation can be achieved in Cu50Zr50 MG, effectively improving the plasticity of CuZr alloys. Simulation results and analysis suggest that higher degree of heterogeneity generated in severely deformed regions is responsible for the unusual pronounced beta-relaxation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Mao Zhang, Hongjun Cai, Jiacheng Zhang, Qiaomin Li, Ying Wang, Ting Huang, Jianchun Liu, Xinyun Wang
Summary: Introducing a layer of oxygen into Cu64Zr36 MG for interfacial bonding controlled by ionic drift through the oxide, and deteriorating short-range ordering of MG, while uniaxial tensile tests show favorable ductility with reduced ultimate tensile strength.
Article
Nanoscience & Nanotechnology
Wei Zhang, Zhichao Ma, Hongwei Zhao, Luquan Ren
Summary: Simultaneous strength-ductility enhancement of a high-entropy alloy via cold rolling and annealing is challenging. The grain size decreased significantly and the yield strength dramatically increased while maintaining excellent ductility, attributed to grain refinement and substantial annealing twins.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Long Zhang, Jinhao Zhang, Haibo Ke, Baoan Sun, Zhengwang Zhu, Yandong Wang, Hong Li, Aimin Wang, Haifeng Zhang
Summary: Two different bulk metallic glass composites with in-situ formed crystals show different performances at low temperatures, highlighting the significant influence of shape memory crystals on their low-temperature properties.
Article
Materials Science, Multidisciplinary
Long Zhang, Tingyi Yan, Daniel Sopu, Yi Wu, Binbin Jiang, Kui Du, Haifen Zhang, Juergen Eckert
Summary: This study investigates the influence of crystal behavior and properties on the mechanical properties of two types of metallic glass composites (MGCs). The deformation characteristics of crystals significantly alter the morphology and properties of shear bands (SBs) in the glass matrix. Crystals deforming via dislocations result in narrow and sharp SBs, while shape memory crystals with martensitic transformations exhibit continuously broadening SBs. The broadening and bifurcation of SBs play a crucial role in the superior mechanical properties of shape memory MGCs.
Article
Chemistry, Physical
Tianxu Zhao, Songshan Jiang, Qingxin Cui, Xianxue Zhang, Zhiliang Ning, Hongbo Fan, Jianfei Sun, Yongjiang Huang
Summary: In this study, the deformation behaviors of a Cu47.5Zr48Al4Nb0.5 bulk metallic glass composite (BMGC) in the temperature ranging from 663 K to 763 K have been investigated. The studied BMGC exhibits superplasticity within the supercooled liquid region (SLR) and the deformation involves both homogeneous and inhomogeneous modes. The temperature dependence of deformation behaviors in BMGCs was better understood through this study.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Songshan Jiang, Yongjiang Huang, Peng Xue, Qing Du, Weinan Ru, Shu Guo, Chao He, Zhiliang Ning, Jianfei Sun
Summary: The volume fraction of the crystalline phase plays a significant role in the deformation behaviors of the CuZrAlNb bulk metallic glass composite, with a critical volume fraction determining the plastic deformation of the material. Unrestrained shear bands by the crystalline phase affect the plasticity of the composite material, while larger crystalline phases bear more strain and improve the mechanical properties of the material.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
Songshan Jiang, Yongjiang Huang, Peng Xue, Fangmin Guo, Yang Ren, Jianfei Sun, Alfonso H. W. Ngan
Summary: The effect of cryogenic testing temperatures on the deformation behavior of a CuZr-based bulk metallic glass composite (BMGC) was investigated in this study, showing that the yield strength and work-hardenability increased from 298 K to 153 K. The higher yield strength at lower temperatures can be attributed to a larger difference in volume shrinkage between the crystalline phase and the amorphous matrix, while the increasing martensitic transformation degree of the crystalline phase at lower temperatures resulted in enhanced work-hardenability. These results contribute to a better understanding of the temperature dependence of phase-transformation induced plasticity in CuZr-based BMGCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Jiaqian Xi, Fan Yang, Xiang Zhang, Haofei Zhou
Summary: Introducing crystalline dendrites can enhance the plasticity of metallic glass matrix composites. The geometry of the dendrites significantly influences the mechanical properties of the material.
MATERIALS TODAY COMMUNICATIONS
(2023)
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
Materials Science, Multidisciplinary
Azher M. Abed, Saade Abdalkareem Jasim, Maha M. A. Lashin, Mikhail N. Rodin, Mustafa Z. Mahmoud, Muneam Hussein Ali, Ismail Husein, Mustafa M. Kadhim, Adnan Hashim Abdulkadhim, Lakshmi Thangavelu, Yasser Fakri Mustafa, Abdullah Hasan Jabbar
Summary: This study investigates the cold welding process of the Cu60Zr40/Cu50Zr50 metallic glass system through MD simulation. The results show that the joining evolution is accompanied by shear events and atomic rearrangements, with one side of the joint being more affected. The nanoindentation results indicate that the joint zone is softer than the base alloys, but no sudden shear propagation is observed. The strain maps of shear atomic strain show that the interactions between atomic rearrangements and shear bands are asymmetrical in the joint zone.
MATERIALS TODAY COMMUNICATIONS
(2022)
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)
Article
Metallurgy & Metallurgical Engineering
Yanyan Liu, Qin Yu, Guoqi Tan, Mingyang Zhang, Enling Tang, Shaogang Wang, Zengqian Liu, Qiang Wang, Zhefeng Zhang, Robert O. Ritchie
Summary: Highly efficient magnesium composites with fish-scale-like orthogonal plywood and double-Bouligand architectures were developed using bioinspired methods. These composites exhibit enhanced strength and work-hardening ability compared to simple mixtures of their constituents. The double-Bouligand architecture effectively deflects cracking paths, alleviates strain localization, and reorients titanium fibers within the magnesium matrix during deformation, successfully implementing the property-optimizing mechanisms observed in fish scales. This study provides a feasible approach for developing bioinspired metal-matrix composites with improved performance and offers theoretical guidance for their architectural designs.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Ruitao Qu, Shaojie Wu, Cynthia A. Volkert, Zhefeng Zhang, Feng Liu
Summary: In this study, a significant size effect on the strength, plasticity, and fracture behavior of the VNbMoTaW RHEA was shown. The brittle cracking behavior of RHEA was greatly suppressed as the sample size decreased from millimeter to sub-micrometer scale, resulting in enhanced strength and plasticity. The improved mechanical properties can be attributed to the disappearance of crack initiation sites, size-dependent dislocation plasticity, and size-dependent competition in thermodynamics.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yanyan Liu, Xi Xie, Zengqian Liu, Qin Yu, Qing Jia, Shaogang Wang, Zhefeng Zhang, Rui Yang, Robert O. Ritchie
Summary: It is challenging to achieve a combination of lightness, strength, toughness, and damping in a single material, as these properties are often contradictory. In this study, a cermet material was developed by incorporating an ultrafine-grained Mg-Al-Zn magnesium alloy with ultrafine Ti3AlC2 ceramic platelets. The resulting material exhibited a unique architecture resembling natural nacre, with bi-continuous and interpenetrated phases arranged in layers. This cermet material showed exceptional flexural strength, specific flexural strength, damping capacities, and fracture toughness, surpassing most other materials in these aspects.
Article
Engineering, Chemical
D. Ye, S. F. Li, X. M. Gan, R. D. K. Misra, S. X. Wang, Z. Q. Liu, C. Q. Hu, Y. F. Yang
Summary: Carbon nanotubes (CNTs) were in situ synthesized on NiTi powder to create a high-quality composite powder for laser powder bed fusion. The printed composite showed an increase in elastic modulus and yield strength compared to the bare printed NiTi SMA. The CNTs-NiTi composite powder also addressed the degraded thermomechanical properties issue of the printed NiTi SMA.
Review
Materials Science, Multidisciplinary
Wenwang Wu, Re Xia, Guian Qian, Zengqian Liu, Nima Razavi, Filippo Berto, Huajian Gao
Summary: The rapid progress in advanced manufacturing, multidisciplinary integration, and artificial intelligence has brought about a new era of technological development in the design of lightweight, well-integrated, multifunctional, intelligent, flexible, and biomimetic materials and structures. The authors propose a new research paradigm of mechanostructures to address the limitations of traditional structural research, aiming to achieve target mechanical responses of structures, devices, and equipment in extreme environments by integrating structural design, manufacturing, and performance evaluation.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Chenxi Dou, Mingyang Zhang, Dechun Ren, Haibin Ji, Zhe Yi, Shaogang Wang, Zengqian Liu, Qiang Wang, Yufeng Zheng, Zhefeng Zhang, Rui Yang
Summary: A Mg-Ti composite with a bi-continuous and mutually interspersed architecture has been fabricated, showing potential as a new partially degradable and bioactive implant material.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Ruitao Qu, Cynthia A. Volkert, Zhefeng Zhang, Feng Liu
Summary: The plastic yielding behavior of a brittle Fe-based metallic glass can be activated by decreasing the sample size to the micrometer scale. The yield strength of the brittle metallic glass was found to be at least 33% higher than the fracture strength measured with bulk samples. These findings clarify the physical nature of the strength of brittle metallic glasses and suggest the potential for using high-strength brittle metallic glasses in small-sized devices.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Xiaoming Liu, Zongde Kou, Ruitao Qu, Weidong Song, Yijia Gu, Changshan Zhou, Qingwei Gao, Jiyao Zhang, Chongde Cao, Kaikai Song, Vladislav Zadorozhnyy, Zequn Zhang, Juergen Eckert
Summary: This study utilizes high-temperature extrusion and annealing to optimize the microstructures and mechanical properties of the Co34Cr32Ni27Al3.5Ti3.5 multicomponent alloy. Hot extrusion reduces grain sizes and promotes the precipitation of nanoparticles inside the FCC matrix and grain boundaries. Subsequent annealing regulates the microstructures and enhances the mechanical properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Z. Q. Liu, S. F. Li, D. Ye, R. D. K. Misra, S. Y. Xiao, N. N. Liang, X. M. Gan, Y. F. Yang
Summary: In this study, a novel Ti3C2 MXene-coated Ti composite powder was developed through surface functional modification of MXene followed by powder coating. The MXene remained in the Ti matrix after sintering and exhibited uniform dispersion characteristics and a unique monolayer structure, resulting in a distinctive strengthening behavior and significant enhancement of the tensile properties and hardness of the Ti matrix.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
L. Wang, J. Li, Z. Q. Liu, S. F. Li, Y. F. Yang, R. D. K. Misra, Z. J. Tian
Summary: A Ti3C2 MXene/Ti composite powder was developed for producing high-performance titanium matrix composites (TMCs) by laser 3D printing. Introducing MXene slightly enhanced the laser absorption capacity of Ti powder without changing its original sphericity and flowability. The printing conditions affected the morphology and distribution of MXene in the as-printed composites. At optimized printing parameters, MXene remained along the grain boundaries of the composites, resulting in high surface quality, geometrical accuracy, and densification. The synergy of pull-out effect and load transfer from the remaining MXene increased the yield strength and retained good ductility.
MATERIALS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yanyan Liu, Xi Xie, Zengqian Liu, Qin Yu, Xuegang Wang, Shaogang Wang, Qing Jia, Zhefeng Zhang, Rui Yang, Robert O. O. Ritchie
Summary: In this study, lamellar and brick-and-mortar microstructures are utilized to enhance the mechanical performance of magnesium-MAX composites. The nacre-like structures are successfully fabricated by infiltrating magnesium melt into ice-templated Ti3AlC2 ceramic scaffolds. The resulting composites exhibit excellent specific strength and fracture toughness, surpassing other reported magnesium-ceramic and nacre-like metal-ceramic composites.
COMMUNICATIONS MATERIALS
(2023)
Article
Materials Science, Ceramics
Nan Zhang, Yujing Tong, Xi Xie, Xu Wang, Jian Zhang, Xuegang Wang, Qiqiang Duan, Zengqian Liu, Bailing Jiang, Zhefeng Zhang
Summary: Constructing nacre-mimetic architecture in ceramic-polymer composites using the accumulative rolling technique improves fracture toughness and produces a hierarchical structure. Substituting ceramic powders inhibits crack propagation and activates various toughening mechanisms, resulting in higher stability and fracture resistance.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Multidisciplinary
Shifeng Lin, Zhengwang Zhu, Zengqian Liu, Shaofan Ge, Dingming Liu, Hong Li, Zhengkun Li, Huameng Fu, Aimin Wang, Zhefeng Zhang, Haifeng Zhang, Robert O. Ritchie
Summary: By constructing a hierarchically-structured multiphase composite with tailored heterogeneity, a lightweight material with high strength and ductility can be achieved, overcoming the generally exclusive relationships between different properties for structural materials.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Physical
Yu Guo, Xi Xie, Zengqian Liu, Longchao Zhuo, Jian Zhang, Shaogang Wang, Qiqiang Duan, Qing Jia, Dake Xu, Weihai Xue, Deli Duan, Filippo Berto, Zhefeng Zhang, Rui Yang
Summary: Electrical contact materials are critical for the reliability and efficiency of electrical equipments and electronic instruments. The MAX phase ceramics, with unique properties, can serve as an ideal reinforcement phase. The study explores the use of bi-continuous Ag-Ti3SiC2 MAX phase composites with high ceramic contents and 3D interpenetrating-phase architectures for electrical contact applications, and finds that the composites exhibit superior properties compared to counterparts made by powder metallurgy methods.
Article
Materials Science, Multidisciplinary
Jiao Yan, Jingjing Deng, Da Jiao, Guoqi Tan, Qiang Wang, Zengqian Liu, Peng Yang, Yan Wei, Zhe Yi, Xuliang Deng, Zhefeng Zhang
Summary: This study evaluates the potential and feasibility of natural mollusk shells as dental replacements, finding that they have a variety of natural colors, good machinability, mechanical properties comparable to human teeth, and good cytocompatibility and antifungal function.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
