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Origin of shear induced‘catching bonds’on half Heusler thermoelectric compounds XFeSb(X=Nb,Ta)and SnNiY(Y=Ti,Zr,Hf)

npj Computational materials 2024年第1期10卷 2607-2614页

作者： Haoqin Ma Xiege Huang Zhongtao Lu Xiaobin Feng Bo Duan Wenjuan Li Yinhan Liu Pengcheng Zhai Guodong Li Qingjie Zhang Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics School of ScienceWuhan University of Technology430070 WuhanChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070 WuhanChina

Half Heusler materials exhibit excellent thermoelectric and mechanical properties,rendering them potential candidates for advanced thermoelectric ***,the developments on interrelated devices are impeded by their inherent brittleness and limited ***,it exists the potential ductility on half Heusler materials with face-centered cubic sub-lattices through the expectation of the occurrence of shear-induced‘catching bonds’which can result in excellent ductility on other face-centered cubic materials.

关键词： ductility cubic rendering

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Effect of Composite Composition on the Contact Angle of B_(4)C-xTiB_(2)/Cu

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Journal of Wuhan University of technology(materials Science) 2024年第5期39卷 1116-1120页

作者： HU Dong ZHANG Xin ZHANG Jinyong LEI Liwen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of TechnologyWuhan 430070China

The wetting behavior of molten Cu on the B_(4)C-xTiB_(2)ceramic composites was investigated in this *** results show that the contact angle of molten Cu alloy on B_(4)C-TiB_(2)ceramic composites is linear with the composition rate of TiB_(2)or B_(4)C while the temperature is in the range of 1300 to 1350℃,consistent with the expectation of the commonly used theoretical ***,a nonlinear relationship between the contact angle and the composition rate unexpectedly occurred at temperatures ranging from 1400 to 1500℃.The big difference of the contact angles between the molten metal and the components in the composites was found to be the key *** result identifies that the commonly used theoretical method only works at a limited difference of the contact angle of the liquid on the different phases in the composites,and fails at a big difference.

关键词： wetting B_(4)C-TiB_(2) composites interfacial reaction

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A rapid and effective method for alloy materials design via sample data transfer machine learning

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npj Computational materials 2023年第1期9卷 2083-2094页

作者： Lei Jiang Zhihao Zhang Hao Hu Xingqun He Huadong Fu Jianxin Xie Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology Beijing100083 BeijingChina Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and TechnologyUniversity of Science and Technology Beijing100083 BeijingChina Key Laboratory for Advanced Materials Processing(MOE) University of Science and Technology Beijing100083 BeijingChina

One of the challenges in material design is to rapidly develop new materials or improve the performance of materials by utilizing the data and knowledge of existing ***,a rapid and effective method of alloy material design via data transfer learning is proposed to efficiently design new alloys using existing data.A new type of aluminum alloy(E2 alloy)with ultra strength and high toughness previously developed by the authors is used as an *** optimal three-stage solution-aging treatment process(T66R)was efficiently designed transferring 1053 pieces of process-property relationship data of existing AA7xxx commercial aluminum *** realizes the substantial improvement of strength and plasticity of E2 alloy simultaneously,which is of great significance for lightweight of high-end ***,the microstructure analysis clarifies the mechanism of alloy performance *** study shows that transferring the existing alloy data is an effective method to design new alloys.

关键词： alloy rapid toughness

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A multi-functional MgF_(2)/polydopamine/hyaluronan-astaxanthin coating on the biodegradable ZE21B alloy with better corrosion resistance and biocompatibility for cardiovascular application

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Journal of Magnesium and Alloys 2024年第3期12卷 1102-1116页

作者： Yachen Hou Xueqi Zhang Jingan Li Liguo Wang Shaokang Guan School of Materials Science and Engineering and Henan Key Laboratory of Advanced Magnesium Alloy and Key Laboratory of Materials Processing and Mold Technology(Ministry of Education) Zhengzhou UniversityZhengzhou 450001China

The cardiovascular diseases(CVD)continue to be the major threat to global public health over the years,while one of the effective methods to treat CVD is stent *** magnesium(Mg)alloys have great potential applications in cardiovascular stents benefit from their excellent biodegradability and ***,excessive degradation rate and the delayed surface endothelialization still limit their further *** this study,we modified a Mg-Zn-Y-Nd alloy(ZE21B)by preparing MgF_(2) as the corrosion resistance layer,the dopamine polymer film(PDA)as the bonding layer,and hyaluronic acid(HA)loaded astaxanthin(ASTA)as an important layer to directing the cardiovascular cells *** electrochemical test results showed that the MgF_(2)/PDA/HA-ASTA coating improved the corrosion resistance of *** cytocompatibility experiments also demonstrated that this novel composite coating also selectively promoted endothelial cells proliferation,inhibited hyperproliferation of smooth muscle cells and adhesion of *** with the HAloaded rapamycin(RAPA)coating,our MgF_(2)/PDA/HA-ASTA coating showed better blood compatibility and cytocompatibility,indicating stronger multi-functions for the ZE21B alloy on cardiovascular application.

关键词： Biodegradable ZE21B alloy Reendothelialization Surface modification Hyaluronic acid Astaxanthin.

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On establishment of novel constitutive model for directionally solidified nickel-based superalloys utilizing machine learning methods

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China Foundry 2023年第5期20卷 365-375页

作者： Jia-yan Sun Rong Yin Ye-yuan Hu Yun-xiang Tan Qing-yan Xu Key Laboratory for Advanced Materials Processing Technology(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Xiaomi AI Lab Beijing100102China

To enhance the accuracy of mechanical simulation in the directional solidification process of turbine blades for heavy-duty gas turbines,a new constitutive model that employs machine learning methods was *** model incorporates incremental learning and transfer learning,thus improves the predictive accuracy and generalization *** account for the anisotropy of the directionally solidified alloy,a deformation direction parameter is added to the model,enabling prediction of the stress-strain relationship of the alloy under different deformation *** predictive capabilities of both models are evaluated using correlation coefficient(R),average relative error(δ),and value of relative error(RE).Compared to the traditional model,the machine learning constitutive model achieves higher prediction accuracy and better generalization *** offers a new approach for the establishment of flow constitutive models for other directionally solidified and single-crystal superalloys.

关键词： Ni-based superalloy constitutive model machine learning directional solidification anisotropy

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Enhanced Photocatalytic Activity of Z-scheme Meso-BiVO_(4)-Au-CdS for Degradation of Rhodamine B

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Journal of Wuhan University of technology(materials Science) 2024年第4期39卷 869-876页

作者：张雁伟 WANG Yanze LI Junguo XIE Jingjing 王文宣 FU Zhengyi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 441000China

We synthesized BiVO_(4)mesocrystals with ordered assembly structure,and studied the structural order and the relationship between the photodegradation of Rhodamine *** nanoparticles(NPs)were successfully loaded onto Meso-BiVO_(4)by light-assisted induction,and Cd nanoparticles were further selected to be deposited on Au nanoparticles to form Z-scheme photocatalyst Meso-BiVO_(4)-Au-CdS *** try and propose to analyze its ordered assembly structure by XRD for the first *** results show that Meso-BiVO_(4)is a mesocrystal with highly exposed(001)plane and directional assembly *** charge separation efficiency of all samples was studied by PL *** results show that the Z-scheme Meso-BiVO_(4)-Au-CdS can promote the charge separation and obtain the best carrier separation ***,it has the best photocatalytic activity in the experiment of photocatalytic degradation of rhodamine *** main active species in the degradation process were confirmed by free radical trapping experiment,and the degradation mechanism was put forward.

关键词： biomineralization photosynthesis mesocrystal photocatalysis TiO_(2) BiVO_(4)

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Spinel ferrite with excellent broadband infrared radiation properties for thermal management of electronics

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Ceramics International 2025年第16期51卷 21831-21841页

作者： He, Lintao Zhu, Wanting Wang, Yixin Nie, Xiaolei Zhang, Yu Wei, Ping Zhao, Wenyu Zhang, Qingjie State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Electronic equipment faces increasing challenges related to heat dissipation due to miniaturization, high power, and integration advancements. Infrared radiation refrigeration offers numerous advantages, including zero energy consumption and pollution with minimal space occupation, making it highly compatible with the heat dissipation requirements of electronic equipment. However, advancing infrared radiative cooling technology for thermal management requires further research to develop broadband infrared transmitting materials with excellent performance. In this study, the spinel MeFe2O4 (Me = Cu, Mn, Ni, Co, Mg, Zn) powders were prepared through chemical co-precipitation and their emissivity was assessed in various wavebands (3–5, 8–14, 2.5–25, and 1–22 μm). The results showed that spinel ferrite materials displayed outstanding broadband infrared radiative properties. Among them, MnFe2O4 reached the highest emissivity values (0.90, 0.97, 0.96, and 0.97, respectively), suggesting that narrowing the bandgap and improving carrier concentration increases emissivity in the 3–5 μm waveband. Emissivity in the 8–14 μm waveband was also boosted by increasing lattice asymmetry and lattice strain. Furthermore, the MnFe2O4 powder was mixed with PVDF and Graphene, thereby yielding a flexible heat dissipation film. This MnFe2O4/Graphene/PVDF composite film lowered the surface temperature of electronic devices from 90.8 to 83.2 °C at an ambient temperature of 20 °C under operating conditions of approximately 9 W. This study provides an experimental paradigm for designing and optimizing radiative cooling materials for the thermal management of electronic devices. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Ferrite devices

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3D reconstruction of a million atoms by multiple-section local-orbital tomography

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Science Bulletin 2025年第1期70卷 64-69页

作者： Liangze Mao Jizhe Cui Rong Yu School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China MOE Key Laboratory of Advanced Materials Tsinghua UniversityBeijing 100084China State Key Laboratory of New Ceramics and Fine Processing Tsinghua UniversityBeijing 100084China

Three-dimensional(3D)structural analysis is an important field in physical and biological *** exist two groups of electron microscopy methods that are capable of providing 3D structural information of an object,i.e.,electron tomography and depth *** tomography is capable of resolving atoms in all three dimensions,but the accuracy in atomic positions is low and the object size that can be reconstructed is *** sectioning methods give high positional accuracy in the imaging plane,but the spatial resolution in the third dimension is *** this work,electron tomography and depth sectioning are combined to form a method called multiple-section local-orbital tomography,or nLOT in *** nLOT method provides high spatial resolution and high positional accuracy in all three *** object size that can be reconstructed is extended to a million *** present method establishes a foundation for the widespread application of atomic electron tomography.

关键词： Atomic electron tomography Depth sectioning Local-orbital Atomic resolution

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Photocatalytic hydrogen production toward carbon neutrality:tracking charge separation

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National Science Review 2023年第9期10卷 9-10页

作者： Bao-Lian Su Laboratory of Inorganic Materials Chemistry University of Namur State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Under the vision of 'carbon peaking and carbon neutrality',the global energy system is facing a deep *** a clean energy with the potential to achieve zero carbon emissions,hydrogen energy will undoubtedly play an important ***-energy-driven photo catalytic reactions can decompose water to produce hydrogen and reduce carbon dioxide to produce solar fuels.

关键词：

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Simultaneous enhancement in mechanical and corrosion properties of Al-Mg-Si alloys using machine learning

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Journal of materials Science & technology 2023年第36期167卷 1-13页

作者： Xinming Feng Zhilei Wang Lei Jiang Fan Zhao Zhihao Zhang Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Key Laboratory for Advanced Materials Processing(MOE) University of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China

Al-Mg-Si alloys with high strength and good corrosion resistance are regarded as desirable materials for all-aluminum ***,the traditional trial-and-error experimental methods are insufficient to address the trade-offbetween strength and corrosion *** this work,a non-dominated sorting genetic machine-learning algorithm(NSGA-II)was employed to optimize the chemical composition,so as to simultaneously improve the strength and corrosion *** high-performance Al-Mg-Si alloys with low Mg,Si,and Cu contents were successfully developed,where the yield strength(YS),ultimate tensile strength(UTS),and the elongation(δ)reached 375-380 MPa,410-416 MPa,and 13.7%-15.2%,*** with higher-Cu-content 6013 alloy,the YS and UTS of the present alloys increase by about 60 MPa,and the intergranular corrosion resistance is also significantly ***-ture characterization demonstrated thatβ’’and QP phases introduced a significant synergistic precipita-tion strengthening effect;the dispersoids formed by trace Mn,Cr,Fe,Zr,and Ti contributed dispersion strengthening effect;and the good pitting corrosion resistance is attributed to lower Mg and Si contents.

关键词： Aluminum alloy Machine learning High strength Corrosion resistance

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