Zhaoping Lu
University of Science and Technology Beijing
Ultimate tensile strengthGlass transitionAmorphous metalDeformation (engineering)Chemical physicsComposite materialMetallurgyMaterials scienceCrystallizationCondensed matter physicsAlloyHigh entropy alloysGlass formingPhase (matter)Amorphous solidDuctilityNucleationPlasticityMicrostructureThermodynamics
224Publications
56H-index
14.8kCitations
Publications 221
Newest
#1Xuelian Wu (CityU: City University of Hong Kong)H-Index: 3
#2Si Lan (Nanjing University of Science and Technology)H-Index: 15
Last. Zhaoping Lu (USTB: University of Science and Technology Beijing)H-Index: 56
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Abstract null null Bulk metallic glasses (BMGs) are thermodynamically metastable. As such, crystallization occurs when a BMG is thermally annealed at a temperature above the glass transition temperature. While extensive studies have been performed on the crystallization kinetics of BMGs, most of them have focused on the amorphous-to-crystalline structural ordering, and little attention has been paid to chemical distribution and its relationship with the structural ordering during the crystalliza...
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#1Zhiyuan Liu (SZU: Shenzhen University)H-Index: 10
#2Dandan Zhao (SZU: Shenzhen University)H-Index: 2
Last. Zhaoping Lu (USTB: University of Science and Technology Beijing)H-Index: 56
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Abstract null null As a revolutionary industrial technology, additive manufacturing creates objects by adding materials layer by layer and hence can fabricate customized components with an unprecedented degree of freedom. For metallic materials, a unique hierarchical microstructure is constructed during additive manufacturing, which endows them with numerous excellent properties. To take full advantage of additive manufacturing, an in-depth understanding of the microstructure evolution mechanism...
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#1Huiyang Fan (USTB: University of Science and Technology Beijing)
#2Zhao Fan (Johns Hopkins University)H-Index: 5
Last. En Ma
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In a metallic glass (MG), the propensity for atomic rearrangements varies spatially from location to location in the amorphous solid, making the prediction of their likelihood a major challenge. One can attack this problem from the “structure controls properties” standpoint. But all the current structure-centric parameters are mostly based on local atomic packing information limited to short-range order, hence falling short in reliably forecasting how the local region would respond to external s...
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#1Shao-Long Jiang (USTB: University of Science and Technology Beijing)H-Index: 12
#1Suihe Jiang (USTB: University of Science and Technology Beijing)H-Index: 8
Last. Zhaoping LuH-Index: 56
view all 9 authors...
Strengthening from single lattice defect such as dislocations or nanoprecipitates generally leads to the so-called strength-ductility tradeoff, which becomes particularly pronounced at the strength level of above 2 GPa. Herein, we report a sustainable strain-hardening mechanism in ultrahigh-strength martensitic steels via manipulating interaction of different defects at the nano-scale. We show that fast precipitation of low-misfit B2-ordered Ni(Al, Fe) could efficiently prevent dense quench-in d...
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A grand challenge for proton exchange membrane electrolyzers is the rational design of oxygen evolution reaction electrocatalysts to balance activity and stability. Here, we report a support-stabilized catalyst, the activated ~200 nm-depth IrW nanochannel that achieves the current density of 2 A cm−2 at an overpotential of only ~497 mV and maintains ultrastable gas evolution at 100 mA cm−2 at least 800 h with a negligible degradation rate of ~4 μV h−1. Structure analyses combined with theoretica...
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#1Jing WangH-Index: 3
#2Li YouH-Index: 8
Last. Zhaoping LuH-Index: 56
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Abstract Searching for free-standing and cost-efficient hydrogen evolution reaction (HER) electrocatalysts with high efficiency and excellent durability remains a great challenge for the hydrogen-based energy industry. Here, we report fabrication of a unique hierarchically porous structure, i.e., nanoporous Ni (NPN)/metallic glass (MG) composite, through surface dealloying of the specially designed Ni40Zr40Ti20 MG wire. This porous composite is composed of micrometer slits staggered with nanomet...
1 CitationsSource
#1Yeqiang Bu (ZJU: Zhejiang University)H-Index: 6
#2Yuan Wu (USTB: University of Science and Technology Beijing)H-Index: 37
Last. Wei Yang (ZJU: Zhejiang University)H-Index: 68
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Abstract High-entropy alloys (HEAs) open up a new horizon for discovering un-explored mechanical properties and deformation mechanisms. Local chemical fluctuations (LCFs) in HEAs were found to have significant influences on their mechanical performance, however, the underlying origins remain unclear. In this work, direct dynamic observation of the interaction between LCFs and dislocations was captured by in situ transmission electron microscopy in a ductile body-centered-cubic (BCC) HfNbTiZr HEA...
1 CitationsSource
#2Xiongjun Liu (CSU: Central South University)
Last. Zhaoping LuH-Index: 56
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High-entropy ceramics (HECs) have attracted much attention due to their huge composition space, unique microstructure, and desirable properties. In contrast to previous studies, which have primarily focused on HECs with one anion, herein, we report a new family of ceramics with both multi-cationic and -anionic structures, i.e., high-entropy carbide-nitrides (Ti0.33Zr0.33Hf0.33)(C0.5N0.5), (Ti0.25Zr0.25Hf0.25Nb0.25)(C0.5N0.5) and (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)(C0.5N0.5). These as-synthesized HECs ar...
1 CitationsSource
#1Xiaocan Wen (USTB: University of Science and Technology Beijing)H-Index: 1
#2Yuan Wu (USTB: University of Science and Technology Beijing)H-Index: 37
Last. Zhaoping Lu (USTB: University of Science and Technology Beijing)H-Index: 56
view all 9 authors...
Abstract Body-centered cubic (BCC) refractory HEAs which have shown interesting properties at elevated temperatures such as outstanding high-temperature strength, high oxidation and corrosion resistance, nevertheless, they are generally brittle at ambient temperature, which limits their practical uses. Application of the transformation-induced plasticity (TRIP) concept into these BCC HEAs like HfTaTiZr has confirmed to be an effective approach to addressing this critical challenge. To further re...
1 CitationsSource
#1Junheng Gao (University of Sheffield)H-Index: 15
#2Suihe Jiang (USTB: University of Science and Technology Beijing)H-Index: 8
Last. W. Mark Rainforth (University of Sheffield)H-Index: 16
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Steels with sub-micrometre grain sizes usually possess high toughness and strength, which makes them promising for lightweighting technologies and energy-saving strategies. So far, the industrial fabrication of ultrafine-grained (UFG) alloys, which generally relies on the manipulation of diffusional phase transformation, has been limited to steels with austenite-to-ferrite transformation1–3. Moreover, the limited work hardening and uniform elongation of these UFG steels1,4,5 hinder their widespr...
3 CitationsSource