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Effect of Substrate Type on Deposition Behavior and Wear Performance of Ni-Coated Graphite/Al Composite Coatings Deposited by Cold Spraying

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Journal of Materials Science & Technology 2017年第4期33卷 338-346页

作者： Chunjie Huang Wenya Li yingchun xie Marie-Pierre Planche Hanlin Liao Ghislain Montavon ICB UMR 6303 CNRSUniversite Bourgogne Franche-ComteUTBMF-90100 BelfortFrance State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi'an 710072China

This work focused on the deposition characteristics and wear behavior of Ni-coated graphite mixed with40 vol.% Al（Ni-Gr/Al） composite coatings sprayed on an Al alloy and a steel substrate by cold spraying（CS）. The morphology of the flattened Ni-Gr particles was examined by single-impact tests. Crosssectional microstructure and wear performance of the Ni-Gr/Al composite coatings were studied. Results showed that a larger number of Ni-Gr particles were finally bonded with the steel substrate, whereas many craters existed on the Al alloy substrate after the single-impact tests. The coating on the steel substrate had a high thickness, high graphite content and low coeficient of friction（COF） compared to those on the Al alloy substrate. In addition, the CS coatings presented a homogeneous distribution and uniform morphology of graphite, and a comparative COF to that of conventional thermal sprayed coatings. It was shown that CS could avoid the decomposition and transformation of graphite phase.

关键词： Cold spraying Ni-coated graphite Deposition behavior Microstructure Wear performance

Towards high-strength cold spray additive manufactured metals:Methods,mechanisms,and properties

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Journal of Materials Science & Technology 2024年第3期170卷 47-64页

作者： Shuo Yin Ningsong Fan Chunjie Huang yingchun xie Chao Zhang Rocco Lupoi Wenya Li Department of Mechanical Manufacturing&Biomedical EngineeringParsons BuildingTrinity College DublinThe University of DublinDublin 2Ireland Institute of Materials Technology Helmut-Schmidt-University/University of the Federal Armed Forces HamburgHamburg 22043Germany The Key Lab of Guangdong for Modern Surface Engineering Technology National Engineering Laboratory for Modern Materials Surface Engineering TechnologyInstitute of New MaterialsGuangdong Academy of SciencesGuangzhou 510651China College of Mechanical Engineering Yangzhou UniversityYangzhou 225127China State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi’an 720072China

Cold spray,as a solid-state additive manufacturing process,has been attracting increasing attention from both scientific and industrial ***,cold-sprayed deposits generally have unfavorable mechanical properties in their as-fabricated state compared to conventionally manufactured and fusion-based additive-manufactured counterparts due to the inherent microstructural defects in the deposits(e.g.,porosity and incomplete interparticle bonding).This downside reduces its competitiveness and limits its wide applications as an additive manufacturing *** the past years,many strengthening technologies have been developed or introduced to adjust the microstructure and improve the mechanical properties of cold-sprayed *** term“strengthening”in this work specifically refers to improving the mechanical strength,particularly the tensile strength of the cold-sprayed bulk *** to the stage that the strengthening technologies are used in the cold spray process,they can be classified into three categories:pre-process(e.g.,powder heat treatment),in-process(e.g.,powder heating,in-situ micro-forging,laser-assisted cold spray),and post-process(e.g.,post heat treatment,hot isostatic pressing,hot rolling,friction stir processing).Therefore,a comprehensive review of these strengthening technolo-gies is conducted to illuminate the possible correlations between the strengthening mechanisms and the resultant deposit microstructures and mechanical *** review paper aims to help researchers and engineers well understand the different strengthening methods and provide guidance for the cold spray community to develop new strengthening strategies for future high-quality mass production.

关键词： Cold spray Additive manufacturing Strengthening Microstructure Ductility Tensile strength

A novel approach for fabricating a CNT/AlSi composite with the self-aligned nacre-like architecture by cold spraying

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Nano Materials Science 2019年第2期1卷 137-141页

作者： Xinliang xie Chaoyue Chen Gang Ji Run Xu Zhanqiu Tan yingchun xie Zhiqiang Li Hanlin Liao ICB UMR 6303 CNRS Univ. Bourgogne Franche-Comte UTBM F-90010 Belfort France Univ. Lille CNRS INRA ENSCL UMR 8207 - UMET - Unite Materiaux et Transformations F-59000 Lille France State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

A fully dense carbon nanotubes (CNTs) reinforced AlSi matrix composite with the multiscale nacre-like architecture was designed and successfully realized by flake powder metallurgy followed by cold spraying (CS). The nanolaminated and ultrafine-grained structure initially created in the CNT/AlSi flaky powder was perfectly conserved, due to the typical ‘cold’ feature of CS. As discussed based on finite element analysis and single splat observation, self-alignment behavior of the flaky powders during impact also allowed the formation of the microlaminated structure. Hence, the scalable CS technique opens a new avenue for bioinspired material design and fabrication with complex shape.

关键词： Additive manufacturing Cold spray Metal matrix composites Nanolaminated structure Carbon nanotubes

Ductile and high strength Cu fabricated by solid-state cold spray additive manufacturing

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Journal of Materials Science & Technology 2023年第3期134卷 234-243页

作者： Chaoyue Chen yingchun xie Shuo Yin Wenya Li Xiaotao Luo Xinliang xie Ruixin Zhao Chunming Deng Jiang Wang Hanlin Liao Min Liu Zhongming Ren State Key Laboratory of Advanced Special Steels School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Institute of New Materials Guangdong Academy of SciencesNational Engineering Laboratory of Modern Materials Surface Engineering TechnologyGuangdong Provincial Key Laboratory of Modern Surface Engineering TechnologyGuangzhou 510651China Trinity College Dublin The University of DublinDepartment of Mechanical and Manufacturing EngineeringParsons BuildingDublin 2Ireland State Key Laboratory of Solidification Processing Shaanxi Key Laboratory of Friction Welding TechnologiesSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Key laboratory for Light-weight Materials Nanjing Techchnology UniversityNanjing 211816China ICB UMR 6303 CNRSUniv.Bourgogne Franche-ComtéUTBMF-90010 BelfortFrance

In this work,pure Cu with excellent strength and ductility(UTS of 271 MPa,elongation to fracture of 43.5%,uniform elongation of 30%)was prepared using cold spray additive manufacturing(CSAM),realizing a breakthrough in the *** in-depth investigation was conducted to reveal the microstructure evolution,strengthening and ductilization mechanisms of the CSAM Cu,as well as the single *** results show that the CSAM Cu possesses a unique heterogeneous microstructure with a bimodal grain structure and extensive infinitely circulating ring-mounted distribution of *** on the single splat observation,the entire copper particle forms a gradient nano-grained(GNG)structure after high-speed impact *** GNG-structured single splat serves as a unit to build the heterogeneous microstructure with bimodal grain distribution during the successive deposition in *** results also show that CSAM can achieve synergistic strengthening and ductilization by controlling the grain refinement and dislocation *** work provides potential for CSAM technique in manufacturing various metallic parts with the desired combination of high strength and good ductility without additional post-treatments.

关键词： Cold spray additive manufacturing Copper Heterogeneous microstructure Strength Ductility

Dynamic evolution of oxide scale on the surfaces of feed stock particles from cracking and segmenting to peel-off while cold spraying copper powder having a high oxygen content

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Journal of Materials Science & Technology 2021年第8期67卷 105-115页

作者： Xiao-Tao Luo Yi Ge yingchun xie Yingkang Wei Renzhong Huang Ninshu Ma Chidambaram Seshadri Ramachandran Chang-Jiu Li State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710049China The Key Lab of Guangdong for Modem Surface Engineering Technology Guangdong Institute of New MaterialsGuangzhou510651China Joining and Welding Research Institute Osaka UniversityOsaka567-0047fapan Department of Materials Science and Engineering The State University of New York at Stony BrookNew York117942275USA

The oxide scale present on the feedstock particles is critical for inter-particle bond formation in the cold spray(CS)coating process,therefore,oxide scale break-up is a prerequisite for clean metallic contact which greatly improves the quality of inter-particle bonding within the deposited *** general,a spray powder which contains a thicker oxide scale on its surface(i.e.,powders having high oxygen content)requires a higher critical particle velocity for coating formation,which also lowers the deposition efficiency(DE)making the whole process a challenging *** this work,it is reported for the first time that an artificially oxidized copper(Cu)powder containing a high oxygen content of 0.81 wt.%with a thick surface oxide scale of 0.71μm.,can help achieve an astonishing increment in DE.A transition of surficial oxide scale evolution starting with crack initiations followed by segmenting to peeling-off was observed during the high velocity particle impact of the particles,which helps in achieving an astounding increment in ***-particle deposit observations revealed that the thick oxide scale peels off from most of the sprayed powder surfaces during the high-velocity impact,which leaves a clean metallic surface on the deposited *** makes the successive particles to bond easily and thus leads to a higher ***,owning to the peeling-off of the oxide scale from the feedstock particles,very few discontinuous oxide scale segments are retained at inter-particle boundaries ensuring a high electrical conductivity within the resulting *** of the oxide scale threshold thickness for peeling-off during the high velocity particle impact was also investigated.

关键词： Cold spray Deposition efficiency Oxide scale fragmentation Inter-particle bonding Electrical conductivity

Cold spray additive manufacturing of Invar 36 alloy:microstructure,thermal expansion and mechanical properties

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Journal of Materials Science & Technology 2021年第13期72卷 39-51页

作者： Chaoyue Chen yingchun xie Longtao Liu Ruixin Zhao Xiaoli Jin Shanqing Li Renzhong Huang Jiang Wang Hanlin Liao Zhongming Ren State Key Laboratory of Advanced Special Steels School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Guangdong Academy of Science Guangdong Institute of New MaterialsNational Engineering Laboratory for Modern Materials Surface Engineering TechnologyThe Key Lab of Guangdong for Modern Surface Engineering TechnologyGuangzhou 510651China Research Institute Baoshan Iron&Steel Co.LtdShanghai 200431China ICB UMR 6303 CNRSUniv.Bourgogne Franche-ComtéUTBMF-90010 BelfortFrance

In this work,the Invar 36 alloys were manufactured using cold spray(CS)additive manufacturing *** systematic investigations were made on the microstructural evolution,thermal expansion and mechanical properties under as-sprayed(AS)and heat-treated(HT)***(X-ray diffraction)and ICP-AES(inductively coupled plasma atomic emission spectroscopy)analyses show that no phase transformation,oxidation,nor element content change have *** X-ray computed tomography(XCT)exhibited a near fully dense structure with a porosity of 0.025%in the helium-produced sample under as-sprayed condition,whereas the nitrogen-produced samples produced at 5 MPa and 800℃show more irregular pore ***-AS sample shows a more prominent grain refinement than that of nitrogen samples due to the more extensive plastic *** post heat-treatment exhibited a promoted grain growth,inter-particle diffusion,as well as the formation of annealing ***25℃and 200℃,the nitrogen samples possessed lower CTE(coefficient of thermal expansion)values(1.53×10^(-6)/℃)compared with those produced by casting and laser additive *** He-AS samples exhibited a noticeable negative CTE value between 25℃and 200℃,which may due to the significant compressive residual stress(-272 MPa)compensating its displacement with temperature increase during CTE *** N2-HT and He-HT Invar 36 samples present a notable balance between strength and *** conclusion,the CS technique can be considered as a potential method to produce the Invar36 component with high thermal and mechanical performance.

关键词： Cold spray Additive manufacturing Invar 36 alloy Coefficient of thermal expansion Tensile test

Study on the Irreversible Thermodynamics of a Marine Engine Exhaust-powered Adsorption Refrigerating System

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Journal of Ocean University of China 2006年第2期5卷 165-168页

作者： xie yingchun MEI Ning XU Zhen College of Engineering Ocean University of China Qingdao 266071 P.R. China

This study investigates the heat and mass transfer mechanism of a marine engifie exhaust-powered adsorption refrigerating system by using irreversible thermodynamics. The equations of entropy-production rate and the linear phenomenological equations of thermodynamic flux and force are established. The conventional experimental facilities of unit tube are developed and the phenomenological coefficients are obtained by fitting the experimental data. It is concluded that the thermodynamic process in the adsorbent bed is determined by the coupling effect of the heat and mass transfer; furthermore, the mass transfer is determined by the heat transfer. Taking some measures to increase heat transfer can improve the performance of the adsorption refrigerating system. The conclusions presented in this paper may be of value to the engineering applications of the system.

关键词： adsorption refrigeration irreversible thermodynamics entropy-production rate heat and mass transfer linear phenomenological equations

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逆流湿化器的效能分析

化工学报 2014年第S1期65卷 61-65页

作者：谢迎春梅宁中国海洋大学工程学院山东青岛266100

采用75组逆流湿化器实验数据,对基于改进效能定义式的直接接触换热器ε-NTU方程进行了验证,并分析了压力、水气比、进口水温、进口空气湿球温度等操作参数对热容量流比和效能的影响。结果表明,改进ε-NTU方程的最大计算相对误差为27.7%... 详细信息

采用75组逆流湿化器实验数据,对基于改进效能定义式的直接接触换热器ε-NTU方程进行了验证,并分析了压力、水气比、进口水温、进口空气湿球温度等操作参数对热容量流比和效能的影响。结果表明,改进ε-NTU方程的最大计算相对误差为27.7%,可用于工程计算;热容量流比随操作参数的变化单调增减,而效能曲线在热容量流比等于1时存在最小值拐点;固定操作压力下,进口空气湿球温度、水气比、进口水温的变化对逆流湿化器效能的影响依次减小。

关键词：热力学传递增湿效能热容量流比

基于ANSYS的气液两相流海洋立管流固耦合特性分析

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振动与冲击 2021年第7期40卷 260-267页

作者：田晓洁谢大帅刘贵杰谢迎春邓伟中国海洋大学工程学院青岛266100 齐鲁工业大学(山东省科学院)海洋仪器仪表研究所青岛266061

运用ANSYS软件对气液两相流海洋立管进行了流固耦合特性分析,包括模态分析和动力学分析。模态分析研究了有无流固耦合存在时立管振动模态的变化以及流体边界条件对立管固有频率和阵型的影响;同时,将仿真分析同DNV公式求解的固有频率进... 详细信息

运用ANSYS软件对气液两相流海洋立管进行了流固耦合特性分析,包括模态分析和动力学分析。模态分析研究了有无流固耦合存在时立管振动模态的变化以及流体边界条件对立管固有频率和阵型的影响;同时,将仿真分析同DNV公式求解的固有频率进行了对比验证。动力学分析研究了单、双向流固耦合振动分析,并将单、双向流固耦合进行了对比分析,同时考虑了立管支承方式、流体边界条件对立管振动的影响,提出了立管减振措施。分析结果对海洋立管的优化设计和运行的可靠性提供了重要的理论意义。

关键词：气液两相流海洋立管流固耦合模态分析动力学分析