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作者： Zhao Kai Wang Tian-yu AECC Beijing Institute of Aeronautical Materials Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Key Laboratory of Science and Technology on Aeronautical Materials Testing and Evaluation Aero engine corporation of China Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation

In this paper, the influence of inclusions' position on stress & strain distribution was researched when inclusions were same size and shape. The finite element method was used to study the position effect of inclusions in the FGH95 P/M superalloys. The shape of inclusions was simplified rotundity in the model. The influence of inclusions which was on the surface, in the sub-surface and in the basic material on stress & strain distribution was studied. There were two cases, the inclusion connected basic material tightly and there was a hole between the inclusion and the basic material. The change rule of interfacial stress & strain distribution caused by the variation of inclusions' position was given.

关键词： Position on Stress Distribution of Inclusion-matrix Interface Influence of Inclusions

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Failure analysis of sensor diaphragm cracking

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Journal of Physics: Conference Series 2021年第1期1907卷

作者： Kong Huan-ping Liu De-lin Liu Chang-kui AECC Beijing Institute of Aeronautical Materials Beijing China Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Beijing China Key Laboratory of Science and Technology on Aeronautical Materials Testing and Evaluation of Aero engine corporation of China Beijing China Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation Beijing China AECC Failure Analysis Center Beijing China

The sensor diaphragm cracked during the test project. Through macro and micro morphology observation, metallographic examination and hardness test, the diaphragm failure properties and reasons were determined. The results showed that the failure nature of the faulted diaphragm was bidirectional bending fatigue cracking. 1# crack failure was related to the greater bending stress borne at the bottom of the outermost corrugation. 2# crack failure was related to the greater stress borne by the root at the boundary between the outermost corrugation and the outer edge, the appearance of grain boundaries caused by the pickling process promoted the initiation and propagation of 2# crack.

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Study of the Residual Stress in 2A97 Al-Li Alloy Using Different Methods

Study of the Residual Stress in 2A97 Al-Li Alloy Using Diffe...

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第二届材料科学应用与能源材料国际研讨会

作者： Xi Wang Changkui Liu AECC Beijing Institute of Aeronautical Materials Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation Key Laboratory of Aeronautical Materials Testing and Evaluation Aero Engine Corporation of China

The contour method and X-ray diffraction have been used to measure the quenching stress in 2 A97 Al-Li *** surface stresses were measured by X-ray ***,the 2-D distribution of stresses have been given by the contour *** differences between the two methods can be more than 100 *** addition,finite element model which is suitable for evaluation of residual stresses in this material was *** is very good correlation between the contour method and finite element model(FEM).The differences are less than 50 *** model has high precision to forecast the residual stress in 2 A97 Al-Li alloy.

关键词： Study of the Residual Stress in 2A97 Al-Li Alloy Using Different Methods Alloy

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Feasibility study of NiCoCrFeAl0 .8 Si 0.1 (NbMoTaW) 0.1 denary alloy as a bond coat for thermal barrier coatings: from structural stability to high-temperature oxidation behavior

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Surface and Coatings technology 2025年 512卷

作者： Zhuo Chen Yongzhi Jing Chao Zhang Xiufang Cui Wei Xu Xiang Wang Yongchao Fang Dechang Ma Guo Jin Institute of Surface/Interface Science and Technology Key Laboratory of Superlight Material and Surface Technology of Ministry of Education College of Material Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Northwest Institute for Nonferrous Metal Research Xi an 710016 China No.703 Research Institute China State Shipbuilding Co. Ltd. Harbin 150078 China The Military Industry Program Evaluation Center of Costind of SASTIND Beijing 100048 China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material Beijing Beijing Institute of Aeronautical Materials Beijing 100095 China

In this study, the feasibility of NiCoCrFeAl 0.8 Si 0.1 (NbMoTaW) 0.1 complex concentrated alloy as a bond coat for thermal barrier coatings (TBCs) was investigated. The alloy bond coat was prepared using plasma spraying technology and compared with the conventional NiCoCrAlY bond coat. The phase composition and microstructural changes of the NiCoCrFeAl 0.8 Si 0.1 (NbMoTaW) 0.1 alloy before and after plasma deposition were analyzed, and the thermal expansion coefficients, microhardness, and oxidation resistance of the two coatings were evaluated. Additionally, a Yttria-Stabilized Zirconia (YSZ) ceramic layer was deposited on the surfaces of both bond coats, forming a complete TBC system, and the evolution of the thermally grown oxide (TGO) layer was studied under different oxidation stages. Results indicate that after plasma spraying, the denary alloy bond coat maintains a single-phase BCC structure with slight compositional segregation, dense microstructure, and effective suppression of segregation of refractory elements due to its high aluminum content. The thermal expansion coefficient of the alloy is comparable to that of NiCoCrAlY, but its microhardness is nearly double that of NiCoCrAlY, with a more uniform hardness distribution. Oxidation testing at 1100 °C revealed that the TGO growth rate of the NiCoCrFeAl-based bond coat TBC is 36 % lower than that of the NiCoCrAlY-based system, demonstrating superior oxidation resistance. This improvement is attributed to the active elements such as Si, Nb, and Mo, which promote the formation of a protective Cr/Al dual-layer oxide film, effectively slowing down further oxidation, internal stress, and the formation of spinel. These findings suggest that the NiCoCrFeAl 0.8 Si 0.1 (NbMoTaW) 0.1 complex concentrated alloy has the potential to serve as a high-performance bond coat in TBC systems, providing superior oxidation resistance, thermal expansion matching, and mechanical integrity at high temperatures.

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Deformation and damage behaviors of as-cast TiAl-Nb alloy during creep

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Progress in Natural science:materials International 2018年第5期28卷 618-625页

作者： Shunke Zhang Sugui Tian Xiaoxia Lv Huichen Yu Ning Tian Zehui Jiao Guoqi Zhao Deyuan Li Guizhou University of Engineering Science Shenyang University of Technology AECC Key Laboratory of Science and Technology on Materials Testing and Evaluation National Key Laboratory of Science and Technology on Advanced High Temperature Structure Materials AECC Beijing Institute of Aeronautical Materials

By means of creep properties measurement and microstructure observation,the deformation and damage behavior of an as-cast TiAl-Nb alloy during creep at temperature near 750°C were *** results showed that the microstructure of the alloy consisted of lamellarγ/α;phase,and the boundaries consisted ofγphase located in between lamellarγ/α;phases with different *** the latter stage of creep,the dislocation networks appeared in the interfaces of lamellarγ/α;phases due to the coarsening of them,which made the coherent interface transforming into the semi-coherent one for reducing its adhesive *** deformation mechanism of the alloy during creep was twinning and dislocations slipping within lamellarγ/α;*** the later period of creep,significant amount of dislocations plied up in the interfaces of lamellarγ/α;phases,which may cause the stress concentration to promote the initiation and propagation of the cracks along the lamellarγ/α;interfaces perpendicular to the stress ***,some cracks on the various cross-sections were connected by tearing edge along the direction of maximum shear stress,up to the creep fracture,which is considered to be the damage and fracture mechanism of alloy during creep at 750°C.

关键词： TiAl-Nb alloy Creep Dislocation network Deformation mechanism Fracture mechanism

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Porous carbon derived from biomass-based polymers: Innovative applications in supercapacitors

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Chinese Chemical Letters 2025年

作者： Qiqi Lv Zhiwei Tian Weijun Li Gaigai Duan Xiaoshuai Han Chunmei Zhang Shuijian He Haimei Mao Chunxin Ma Shaohua Jiang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Materials Science and Engineering Nanjing Forestry University Nanjing 210037 China. Institute of Micro/Nano Materials and Devices Ningbo University of Technology Ningbo 315211 China. Institute of Materials Science and Devices School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 China. Key Laboratory of Quality Safe Evaluation and Research of Degradable Material State Administration for Market Regulation Hainan Academy of Inspection and Testing Haikou 570203 China

In the context of the continuously increasing energy demand, the ongoing advancement of innovative energy storage technologies is regarded as an important strategy to alleviate the energy crisis. Among various energy storage technologies, supercapacitors (SCs) demonstrate significant potential in the future energy storage sector due to their exceptional high-power density and long cycle life. As the core component of SCs, the choice of electrode materials is crucial to their performance, with carbon materials being favored for their excellent electrical conductivity and large specific surface area. In particular, porous carbon materials derived from biomass-based polymers have become a research hotspot due to their unique advantages. Through chemical modification and high-temperature carbonization, these materials can form more stable and optimized porous structures, significantly enhancing their electrochemical performance while meeting environmental protection requirements, thereby highlighting their superiority as electrode materials. This article aims to review the sources, production, and applications of carbon materials derived from biomass-based polymers. We have deeply summarized the preparation and activation methods of carbon from different biomass-based polymer sources. In addition, a comprehensive analysis and systematic comparison of novel modification techniques, such as heteroatom doping, copolymerization, and the incorporation of nanomaterials, were performed to enhance the performance of SCs. Finally, according to the technical challenges to be solved, the goal of large-scale development of biomass-based polymer-derived porous carbon in the field of energy storage is proposed, which is crucial for coping with the global energy crisis and reducing environmental impact.

关键词： Bio-based polymers Porous carbon Activation Heteroatom doping Supercapacitors

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Effect of cold expansion on fatigue life of anodized Al alloy

Effect of cold expansion on fatigue life of anodized Al allo...

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第二届材料科学应用与能源材料国际研讨会

作者： Nan Li Haitao Li Hongtao Liu Changkui Liu AECC Beijing Institute of Aeronautical Materials Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation Key Laboratory of Aeronautical Materials Testing and Evaluation Aero Engine Corporation of China Structure Department Shenyang Aircraft Design Research Institute

Anodizing treatment can improve corrosion resistance of aluminum alloy but decrease the fatigue life *** cold expansion before anodizing can increase the fatigue life of the specimen with open-hole structure by 2582% than the anodized *** electron microscopy(SEM) was employed for microstructure and fracture surface *** stress distribution near the sample hole edge was measured to elucidate the strengthening *** results revealed that although anodizing treatment decreases the surface integrity,the cold expansion is an effective method to improve the open-hole structure specimen remarkably.

关键词： SEM Effect of cold expansion on fatigue life of anodized Al alloy

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Breaking the kinetics-load dilemma in zinc-ion capacitor thick electrodes via structure-interface synergy: Hierarchical nanoarchitectures with dual-site adsorption energetics modulation

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Energy Storage materials 2025年 79卷

作者： Zhiwei Tian Zixuan Guo Gaigai Duan Yong Huang Weijun Li Xiaoshuai Han Chunmei Zhang Shuijian He Haimei Mao Shaohua Jiang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Materials Science and Engineering Nanjing Forestry University Nanjing 210037 China Institute of Micro/Nano Materials and Devices Ningbo University of Technology Ningbo Zhejiang 315211 China Institute of Materials Science and Devices School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 China Key Laboratory of Quality Safe Evaluation and Research of Degradable Material State Administration for Market Regulation Hainan Academy of Inspection and Testing Haikou Hainan 570203 China

The thick electrode of zinc ion capacitors (ZICs) is limited by the performance contradiction between fast reaction kinetics and high-quality load. The key to break through this bottleneck is to clarify the multi-physical field coupling mechanism inside the electrode and reveal the synergistic energy storage law of ion cross-scale transport and interface adsorption/desorption. In this study, a “structure-interface” collaborative optimization strategy was proposed: based on the natural wood framework, a three-dimensional interconnected multi-level pore network was constructed by resin to realize the precise matching of pore size and hydrated zinc ions, and N/O diatomic doping was introduced to regulate the surface charge distribution. The WPNK2 electrode exhibits a satisfactory capacity of 5.8 mAh cm –2 and maintains 1.9 mAh cm –2 at 200 mA cm –2 . At the same time, it provides a surprising capacity of 10.9 mAh cm –2 when the load is increased to 82.75 mg cm –2 . Combined with in-situ spectroscopy, DFT, and electrochemical kinetic analysis, the multi-level energy storage mechanism of ion transport and interface adsorption in thick electrodes was revealed. This work provides a full-chain research paradigm of “structural design-interface engineering-mechanism analysis” for solving the “kinetics-load” trade-off problem of thick electrode materials, which will promote the development of high energy density ZICs devices.

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Advanced high-entropy alloys for nanoelectrocatalysts: Characterization, structure design, preparation and applications

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Chemical Engineering Journal 2025年 516卷

作者： Shiyuan Wang Gaigai Duan Xiaoshuai Han Qing Shi Yong Huang Chunmei Zhang Shuijian He Hongliang Zhao Chunxin Ma Shaohua Jiang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Materials Science and Engineering Nanjing Forestry University Nanjing 210037 China Institute of Micro/Nano Materials and Devices Ningbo University of Technology Ningbo 315211 Zhejiang China Institute of Materials Science and Devices School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou 215009 China Key Laboratory of Quality Safe Evaluation and Research of Degradable Material State Administration for Market Regulation Hainan Academy of Inspection and Testing Haikou Hainan 570203 China

High-entropy alloy (HEA) nanomaterials are widely applied in various electrocatalytic fields due to their unique multi-principal element structures and high-entropy effects, which endow them with excellent electrocatalytic properties, including high activity, good stability, and corrosion resistance. In this review, we summarize recent progress in HEA nanomaterials with different dimensions for electrocatalytic applications. The preparation methods and applications of HEA catalysts with various dimensions, as well as their electrocatalytic properties, structures, characterizations, and computational simulations, are discussed in detail. A comprehensive analysis of the performance of HEA nanomaterials with different dimensions in key electrocatalytic reactions, such as the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) is provided, with comparisons of the effects of different dimensions on electrocatalytic activity. The catalytic mechanisms of HEA nanomaterials with different sizes, including active site formation and reaction pathway regulation, are also thoroughly discussed to better understand their electrocatalytic behavior. Finally, the challenges faced by HEA nanomaterials of various sizes in electrocatalysis are addressed, and future research directions and potential solutions are proposed. Through the comprehensive discussion of these aspects, researchers can gain a deeper understanding of the application of HEA nanomaterials with different sizes in electrocatalysis, thus promoting further research and innovation in this field.

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Carburized Layer Cracking Analysis of Counterweight Blocks of Speed Controller

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Journal of Physics: Conference Series 2021年第1期2101卷

作者： Tao Jiang Bing Zhang Yimeng Mao Jiale Cheng Xiaodong Shi AECC Beijing Institute of Aeronautical Materials Beijing 100095 China Failure Analysis Center of Aviation Industry Corporation of China Beijing 100095 China Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation Beijing 100095 China Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation Beijing 100095 China Key Laboratory of Science and Technology on Aeronautical Materials Testing and Evaluation Aero engine corporation of China Beijing 100095 China New Era Engineering Consulting Co. Ltd. Beijing 100088 China

Trace and fracture analysis, metallographic examination, residual stress testing, and material analysis were carried out, coupled with examining the failure timeline, to analyze the cracking problem of 12CrNi3A steel counterweight blocks under multi-factor coupling. The results show that the cracks of the counterweight blocks are intergranular microcracks in the carburized layer and they are delayed cracks under the joint action of microstructure stress, grinding stress and hydrogen. The delayed cracking of the counterweight blocks is mainly related to abnormal hydrogen absorption during surface treatment and poor grinding quality. The obvious microstructure segregation in raw material and the thicker carburized layer promoted the cracking. The following measures should be comprehensively taken to prevent such failure: strictly controlling raw material quality, hydrogen absorption and stress, as well as increasing the processes to remove hydrogen, reduce stress and stabilize microstructure.

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