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| 1 | Selective laser melting(SLM)of CX stainless steel:Theoretical calculation,process optimization and strengthening mechanism显示文摘In the present work,selective laser melting(SLM)technology was utilized for manufacturing CX stainless steel samples under a series of laser parameters.The effect of laser linear energy density on the microstructure characteristics,phase distribution,crystallographic orientation and mechanical properties of these CX stainless steel samples were investigated theoretically and experimentally via scanning electron microscope(SEM),X-ray diffraction(XRD),electron backscatter diffraction(EBSD)and transmission electron microscope(TEM).Based on the systematic study,the SLM CX stainless steel sample with best surface roughness(Ra=4.05±1.8μm)and relative density(Rd=99.72%±0.22%)under the optimal linear density(η=245 J/m)can be obtained.SLM CX stainless steel was primarily constituted by a large number of fine martensite(α’phase)structures(i.e.,cell structures,cellular dendrites and blocky grains)and a small quantity of austenite(γphase)structures.The pre ferred crystallographic orientation(i.e.,<111>direction)can be determined in the XZ plane of the SLM CX sample.Furthermore,under the optimal linear energy density,the good combinations with the highest ultimate tensile strength(UTS=1068.0%±5.9%)and the best total elongation(TE=15.70%±0.26%)of the SLM CX sample can be attained.Dislocation strengthening dominates the strengthening mechanism of the SLM CX sample in as-built state. | Dongdong Dong Cheng Chang Hao Wang Xingchen Yan Wenyou Ma Min Liu Sihao Deng Julien Gardan Rodolphe Bolot Hanlin Liao | 2021 | Journal of Materials Science & Technology2021，，14： | 11 |
| 2 | 激光选区熔化成形nano-WC/CX钢微观组织及机械性能初探显示文摘为进一步提高激光3D打印CX不锈钢材料的机械性能,首先使用静电自组装方法对CX钢粉末表面进行了纳米WC粉末的修饰,之后对经纳米WC表面修饰的CX钢粉末进行了激光选区熔化成形(Selective laser melting,SLM),对比了添加体积分数5%的WC前后的SLM CX钢试样的机械性能.结合金相显微镜(OM)、扫描电子显微镜(SEM)、能谱分析(EDS)及电子背散射衍射(EBSD)等材料表征手段,对SLM nano-WC/CX钢试样的微观组织结构、元素分布及相应机械性能进行了对比分析.结果表明:体积分数为5%的纳米WC的加入,对SLM nano-WC/CX钢的硬度提升有所帮助,使硬度值从352±8.2 HV_(0.2)提升至361±23.5 HV_(0.2);尽管纳米WC的加入使SLM nano-WC/CX钢的延伸率有所降低,但其最大拉伸强度则由1091.4±6.12 MPa提升到了1109.7±15.26 MPa.总之,初步探索可以发现,通过静电自组装方法,在CX钢粉末表面添加适量的纳米WC颗粒可以有效改善SLM CX钢的最终机械性能. | 常成 闫星辰 GARDAN Julien DENG Sihao BOLOT Rodolphe LIAO Hanlin | 2021 | 材料研究与应用2021，15，4： | 10 |
| 3 | The Effect of Spray Distance and Scanning Step on the Coating Thickness Uniformity in Cold Spray Process显示文摘 | Cai Zhenhua Deng Sihao Liao Hanlin | 2014 | Journal of Thermal Spray Technology2014，23，3： | 1 |
| 4 | Kinematic Optimization of Robot Trajectories for Thermal Spray Coating Application显示文摘 | Deng Sihao Liang Hong Cai Zhenhua | 2014 | Journal of Thermal Spray Technology2014，23，8： | 1 |
| 5 | Invar-Like Behavior of An-tiperovskite Mn3 + xNij N Compounds 显示文摘 | Deng Sihao Sun Ying Wu Hui | 2015 | Chem Mater2015，27，： | 1 |
| 6 | Application of robot offline programming in thermal spraying显示文摘 | Deng Sihao Cai Zhenhua Fang Dandan | 2012 | Surface and Coatings Technology2012，206，1920： | 1 |
| 7 | Application of robot offiine programming in thermal spraying 显示文摘 | Deng Sihao Cai Zhenhua Fang Dandan | 2012 | Surface and Coatings Technology2012，206，1920： | 1 |
| 8 | Development of an Emulator for the Plasma Process Control显示文摘 | Marie-Pierre Planche Taikai Liu Sihao Deng Ghislain Montavon | 2015 | Journal of Mechanics Engineering and Automation2015，5，1： | 0 |
| 9 | Adsorption characteristics of Pb(Ⅱ)ions on sulfidized hemimorphite surface under ammonium sulfate system显示文摘In this work,the effect of ammonium sulfate on the adsorption characteristics of low-concentration Pb(Ⅱ)ions on the sulfidized hemimorphite surface was comprehensively investigated.The results showed that ammonium sulfate could increase the maximum recovery of hemimorphite from 69.42%to 88.24%under a low concentration of Pb(Ⅱ)ions.On the hemimorphite surface pretreated with ammonium sulfate,the adsorption of Pb(Ⅱ)ions was enhanced and the main species of Pb adsorbed was changed from Pb―O/OH to PbS.This was due to the larger amount of ZnS providing more effective adsorption sites for Pb components to generate Pb S.Meanwhile,the intensity of ZnS decreased with the formation of PbS,demonstrating that ZnS was covered by PbS which formed later on the mineral surface.It was beneficial for the adsorption of butyl xanthate on the hemimorphite surface to form more hydrophobic substances.As a result,ammonium sulfate played a crucial role in realizing the efficient recovery of hemimorphite. | Xi Zhang Jiushuai Deng Yu Wang Sihao Li Honghui Zhao Chang Liu Zhitao Ma Zhenwu Sun | 2023 | International Journal of Mining Science and Technology2023，33，4： | 0 |
| 10 | Structure and magnetic properties of the S=3/2 zigzag spin chain antiferromagnet BaCoTe_(2)O_(7)显示文摘We report a study of the structure and magnetic properties of the S=3/2 zigzag spin chain compound BaCoTe_(2)O_(7).Neutron diffraction measurements show that it crystallizes in the noncentrosymmetric space group Ama2 with a canted↑↑↓↓spin structure along the quasi-one-dimensional zigzag chain and a moment size of 1.89(2)μBat 2 K.Both magnetic susceptibility and specific heat measurements yield an antiferromagnetic phase transition at TN=6.2 K.A negative Curie-Weiss temperature,ΘCW=-74.7(2) K,and an empirical frustration parameter,f=|ΘCW|/TN≈12,are obtained by fitting the magnetic susceptibility,indicating antiferromagnetic interactions and strong magnetic frustration.From ultraviolet-visible absorption spectroscopy and first-principles calculations,an indirect band gap of 2.68(2) eV is determined.We propose that the canted zigzag spin chain of BaCoTe_(2)O_(7) may produce a change in the polarization via the exchange-striction mechanism. | Lisi Li Xunwu Hu Zengjia Liu Jia Yu Benyuan Cheng Sihao Deng Lunhua He Kun Cao Dao-Xin Yao Meng Wang | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，8： | 0 |
| 11 | Formal Verification Platform as a Service:WebAssembly Vulnerability Detection Application显示文摘In order to realize a general-purpose automatic formal verification platform based on WebAssembly technology as a web service(FVPS),which aims to provide an automated report of vulnerability detections,this work builds a Hyperledger Fabric blockchain runtime model.It proposes an optimized methodology of the functional equivalent translation from source program languages to formal languages.This methodology utilizes an external application programming interface(API)table to replace the source codes in compilation,thereby pruning the part of housekeeping codes to ease code inflation.Code inflation is a significant metric in formal language translation.Namely,minor code inflation enhances verification scale and performance efficiency.It determines the efficiency of formal verification,involving launching,running,and memory usage.For instance,path explosion increases exponentially,resulting in out-of-memory.The experimental results conclude that program languages like golang severely impact code inflation.FVPS reduces the wasm code size by over 90%,achieving two orders of optimization magnitude,from 2000 kilobyte(KB)to 90 KB.That means we can cope with golang applications up to 20 times larger than the original in scale.This work eliminates the gap between Hyperledger Fabric smart contracts and WebAssembly.Our approach is pragmatic,adaptable,extendable,and flexible.Nowadays,FVPS is successfully applied in a Railway-Port-Aviation blockchain transportation system. | LiangJun Deng Hang Lei Zheng Yang WeiZhong Qian XiaoYu Li Hao Wu Sihao Deng RuChao Sha WeiDong Deng | 2023 | Computer Systems Science & Engineering2023，45，5： | 0 |
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