Zengqian Liu
Center for Advanced Materials
ParticleComposite numberUltimate tensile strengthSupercoolingAmorphous metalCoercivityFabricationDeformation (engineering)Phase transitionNanoparticleComposite materialRodBiological systemMetallurgyMaterials scienceMineralogyCrystallizationThermalDamage toleranceAlloyBioinspirationTungsten carbideBiological materialsStrengths basedHigh saturation magnetizationCompressive strengthChemical engineeringFracture (geology)Elastic modulusPhase (matter)LaserTungstenMagnesiumCopperNucleationPorosityDiffusionless transformationMetalloidPlasticityPrecipitation (chemistry)MicrostructureStress (mechanics)Fracture toughness
36Publications
17H-index
959Citations
Publications 41
Newest
#1Yuan Zhang (Center for Advanced Materials)H-Index: 1
#2Guoqi Tan (Center for Advanced Materials)H-Index: 2
Last. Longchao ZhuoH-Index: 15
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Abstract null null The microscopic Bouligand-type architectures of fish scales demonstrate a notable efficiency in enhancing the damage tolerance of materials; nevertheless, it is challenging to reproduce in metals. Here bioinspired tungsten-copper composites with different Bouligand-type architectures mimicking fish scales were fabricated by infiltrating a copper melt into woven contextures of tungsten fibers. These composites exhibit a synergetic enhancement in both strength and ductility at r...
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#1Guoqi Tan (Center for Advanced Materials)H-Index: 2
#2Qin Yu (University of California, Berkeley)H-Index: 22
Last. Robert O. Ritchie (University of California, Berkeley)H-Index: 6
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Abstract null null Fatigue resistance is invariably critical for structural materials, but is rarely considered in the development of new bioinspired materials. Here the fatigue behavior and damage mechanisms of a nacre-like ceramic (yttria-stabilized zirconia) - polymer (polymethyl methacrylate) composite, which resembles human tooth enamel in its stiffness and hardness, were investigated under cyclic compression to simulate potential service conditions. The composite has a brick-and-mortar str...
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#1Kefeng Gao (Liaoning University of Petroleum and Chemical Technology)
#2Faheng Wang (Center for Advanced Materials)H-Index: 1
Last. Z.M. Zhang (Center for Advanced Materials)H-Index: 7
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Abstract Porous gypsum materials are of notable significance and demonstrate a broad application in construction and biomedical engineering; nevertheless, it is challenging to simultaneously enhance their mechanical and functional properties. Here by replicating the designs of natural wood, new gypsum materials containing unidirectional micro-pores were fabricated by employing a modified ice-templating technique. The retention of ice-templated architectures was realized based on the hydration-in...
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#1Mingyang Zhang (USTC: University of Science and Technology of China)H-Index: 1
#2Qin Yu (LBNL: Lawrence Berkeley National Laboratory)H-Index: 22
Last. Robert O. Ritchie (University of California, Berkeley)H-Index: 132
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Abstract For composite materials applied for energy absorption and vibration/noise reduction, it is of particular significance to clarify the role of strain rate and temperature on their mechanical properties. Here we present a study on the effects of strain rate (from 10−3 s−1 to 1 s−1) and temperature (from room temperature to 350 °C) on the compressive properties of a 3-D printed Mg–NiTi interpenetrating-phase composite, which features high energy absorption efficiency and good damping capaci...
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#1Ruitao Qu (GAU: University of Göttingen)H-Index: 21
#2Robert Maaß (UIUC: University of Illinois at Urbana–Champaign)H-Index: 30
Last. Cynthia A. Volkert (GAU: University of Göttingen)H-Index: 37
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Brittle materials, such as oxide glasses, are usually very sensitive to flaws, giving rise to a macroscopic fracture strength that is much lower than that predicted by theory. The same applies to bulk-metallic glasses (BMGs), with the important difference that these glasses can exhibit certain plastic strain prior to the catastrophic failure. Here we consider the strongest metallic alloy known, a ternary Co55Ta10B35 BMG. We show that this macroscopically brittle glass is flaw-insensitive at the ...
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#1Lilong Zhang (MOE: Chinese Ministry of Education)
#2Zengqian Liu (USTC: University of Science and Technology of China)H-Index: 17
Last. Zhefeng Zhang (USTC: University of Science and Technology of China)H-Index: 53
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The replacement of synthetic foam materials using natural biological ones is of great significance for saving energy/resources and reducing environmental pollutions. Here we characterized the microstructure and mechanical properties of natural cornstalk pith, which has a large annual output yet lacks an effective exploitation, and evaluated its feasibility for applications as a substitute for synthetic foam materials. The cornstalk pith was revealed to be a cellular material composed of closed c...
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#1Faheng Wang (USTC: University of Science and Technology of China)H-Index: 1
#2Yuanbo Du (HIT: Harbin Institute of Technology)H-Index: 1
Last. Zhang Zhefeng (Center for Advanced Materials)
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Taking lessons from nature offers an increasing promise toward improved performance in man-made materials. Here new cement materials with unidirectionally porous architectures are developed by replicating the designs of natural wood using a simplified ice-templating technique in light of the retention of ice-templated architectures by utilizing the self-hardening nature of cement. The wood-like cement exhibits higher strengths at equal densities than other porous cement-based materials along wit...
1 CitationsSource
#1Yuan Zhang (CAS: Chinese Academy of Sciences)H-Index: 53
#2Guoqi Tan (CAS: Chinese Academy of Sciences)H-Index: 6
Last. Robert O. Ritchie (University of California, Berkeley)H-Index: 132
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Abstract The structures of tungsten and tungsten carbide scaffolds play a key role in determining the properties of their infiltrated composites for multifunctional applications. However, it is challenging to construct and control the architectures by means of self-assembly in W/WC systems because of their large densities. Here we present the development of unidirectionally porous architectures, with high porosities exceeding 65%, for W and WC scaffolds which in many respects reproduce the desig...
8 CitationsSource
#1Mingyang Zhang (USTC: University of Science and Technology of China)H-Index: 3
#1Mingyang Zhang (USTC: University of Science and Technology of China)H-Index: 1
Last. Robert O. Ritchie (University of California, Berkeley)H-Index: 132
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It is of significance, but still remains a key challenge, to simultaneously enhance the strength and damping capacities in metals, as these two properties are often mutually exclusive. Here, we provide a multidesign strategy for defeating such a conflict by developing a Mg-NiTi composite with a bicontinuous interpenetrating-phase architecture through infiltration of magnesium melt into three-dimensionally printed Nitinol scaffold. The composite exhibits a unique combination of mechanical propert...
8 CitationsSource
#1Zengqian Liu (CAS: Chinese Academy of Sciences)H-Index: 17
#2Zhefeng Zhang (CAS: Chinese Academy of Sciences)H-Index: 53
Last. Robert O. Ritchie (University of California, Berkeley)H-Index: 132
view all 3 authors...
10 CitationsSource