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| 1 | A review of selective laser melting of aluminum alloys: Processing,microstructure, property and developing trends显示文摘Selective laser melting(SLM) is an attractive rapid prototyping technology for the fabrication of metallic components with complex structure and high performance. Aluminum alloy, one of the most pervasive structural materials, is well known for high specific strength and good corrosion resistance. But the poor laser formability of aluminum alloy restricts its application. There are problems such as limited processable materials, immature process conditions and metallurgical defects on SLM processing aluminum alloys. Some efforts have been made to solve the above problems. This paper discusses the current research status both related to the scientific understanding and technology applications. The paper begins with a brief introduction of basic concepts of aluminum alloys and technology characterization of laser selective melting. In addition, solidification theory of SLM process and formation mechanism of metallurgical defects are discussed. Then, the current research status of microstructure, properties and heat treatment of SLM processing aluminum alloys is systematically reviewed respectively. Lastly, a future outlook is given at the end of this review paper. | Jinliang Zhang Bo Song Qingsong Wei Dave Bourell Yusheng Shi | 2019 | Journal of Materials Science & Technology2019，35，2： | 77 |
| 2 | 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up. | Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu | 2018 | Science Bulletin2018，63，23： | 54 |
| 3 | Differences in microstructure and properties between selective laser melting and traditional manufacturing for fabrication of metal parts: A review显示文摘(直线波松) 作为生产技术的添加剂之一,选择激光融化广泛地被调查制作金属部分。在直线波松,部分以一种 layer-by-layer 方式从粉末直接被生产;直线波松也提供几个优点,例如有高三维的精确性的复杂部分的生产,与生产技术的另外的添加剂相比。因此,直线波松能在航空学被使用,航天学,药,并且死并且铸造工业。然而,这种技术不同于传统的方法,例如扔并且前进;例如,前者极大地以产品的微观结构和性质不同。这份报纸通过直线波松在金属材料制造上总结相关研究。基于在 Huazhong 大学 Sci 技术完成的一个工作,快速的 Manuf。中心(HUST-RMC ) 并且与在其它描述的特征相比,直线波松的报导研究,微观结构,性质,维的精确性,和应用被介绍。 | Bo SONG Xiao ZHAO Shuai LI Changjun HAN Qingsong WEI Shifeng WEN Jie LIU Yusheng SHI | 2015 | Frontiers of Mechanical Engineering2015，10，2： | 26 |
| 4 | Microstructure Characteristics of Inconel 625 Superalloy Manufactured by Selective Laser Melting显示文摘Selective laser melting(SLM), an additive manufacturing process, is capable of manufacturing metallic parts with complex shapes directly from computer-aided design(CAD) models. SLM parts are created on a layer-by-layer manner, making it more flexible than traditional material processing techniques. In this paper, Inconel 625 alloy, a widely used material in the aerospace industry, were chosen as the build material. Scanning electron microscopy(SEM), electron back scattering diffraction(EBSD) and X-ray diffraction(XRD) analysis techniques were employed to analyze its microstructure. It was observed that the molten pool was composed of elongated columnar crystal. Due to the rapid cooling speed, the primary dendrite arm space was approximately 0.5 μm and the hardness of SLM state was very high(343 HV). The inverse pole figure(IPF) indicated that the growing orientation of the most grains was<001> due to the epitaxial growth and heat conduction. The XRD results revealed that the austenite structure with large lattice distortion was fully formed. No carbides or precipitated phases were found.After heat treatment the grains grew into two microstructures with distinct morphological characters,namely, rectangular grains and limited in the molten pool, and equiaxed grains along the molten boundaries. Upon experiencing the heat treatment, MC carbides with triangular shapes gradually precipitated. The results also identified that a large number of zigzag grain boundaries were formed. In this study, the grain formation and microstructure, and the laws of the molten pool evolution were also analyzed and discussed. | Shuai Li Qingsong Wei Yusheng Shi Zicheng Zhu Danqing Zhang | 2015 | Journal of Materials Science & Technology2015，31，9： | 24 |
| 5 | A Review of 3D Printing Technology for Medical Applications显示文摘 | Ojan Yan Hanhua Dong Jin Su Jianhua Han Bo Song Qingsong wei Yusheng Shi | 2018 | Engineering2018，4，5： | 20 |
| 6 | Geological and chronological evidence of Indo-Chinese strike-slip movement in the Altyn Tagh fault zone显示文摘A set of granitic and amphibole mylonite are exposed in the Altyn Tagh fault zone. The preliminary study shows that these rocks are the product of the syntectonic anatexis in the process of the left-lat- eral strike-slip shear, and are the result of the ductile transpression. There are two types of zircon sorted from the mylonite formed with syn-shear anatexis. Among them, one is the anatectic long co-lumnar zircon and another is the residual metamorphic sub-rounded columnar zircon. Two groups of age for single zircon measured by ion microprobe (SHRIMP) are obtained: one is 461-547 Ma for the sub-rounded columnar residual metamorphic zircon, and the other is 239-244 Ma for the long-columnar anatectic zircon. This type of zircon is direc-tionally spread in rock, and the long axis direction of its crystal is identical to that of stretching lineation, represent-ing the direction of tectonic stress in the process of the strike-slip. 40Ar-39Ar age of the directional growth horn-blende in the same mylonite | LI Haibing YANG Jingsui XU Zhiqin WU Cailai WAN Yusheng SHI Rendeng Juhn G.Liou P.Tapponnier Trevor R.Ireland | 2002 | Chinese Science Bulletin2002，47，1： | 18 |
| 7 | Determination of the Altyn Tagh strike-slip fault basin and its relationship with mountains显示文摘A special extended basin topography is developed in the middle segment of the Altyn Tagh Fault Zone. The ratio of its length to width is over 50. The long boundaries at the two sides of the basin are controlled by the straight normal faults with strike-slip component. Within the basin, the Cenozoic strata are spread. The Altyn Tagh main fault goes through the basin, and a series of strike-slip topography was formed within the basin. The reverse thrust structures were formed at the two sides of the center of the basin, thus making the geological bodies composed of old metamorphic rocks at the two sides of the basin extrude vertically, and forming the extended massif (mountain) at the sides of the basin and parallel to the basin. This special topography was called the strike-slip fault basin. The giant extended strike-slip fault basin began to form during Pliocene, and its topography was basically formed during the late Pleistocene. It is the special topography formed during the strike-slip deformation | Li Haibing Yang Jingsui Shi Rendeng Wu Cailai P.Tapponnier Wan Yusheng Zhang Jianxin Meng Fanchong | 2002 | Chinese Science Bulletin2002，47，7： | 9 |
| 8 | Metal-ceramic Bond Mechanism of the Co-Cr Alloy Denture with Original Rough Surface Produced by Selective Laser Melting显示文摘The porcelain fracture caused by low metal-ceramic bond strength is a critical issue in porcelain fused to metal(PFM)restorations.Surface roughening methods,such as sand blasting,acid etching and alkaline degreasing for the metal matrix are used to increase bond strength.However,the metal matrix of PFM processed by selective laser melting(SLM)has natural rough surface.To explore the effect of the original roughness on metal-ceramic bond strength,two groups of specimen are fabricated by SLM.One group of specimen surface is polished smooth while another group remains the original rough surface.The dental porcelain is fused to the specimens’surfaces according to the ISO 9693:1999 standard.To gain the bond strength,a three-point bending test is carried out and X ray energy spectrum analysis(EDS),scanning electron microscope(SEM)are used to show fracture mode.The results show that the mean bond strength is 116.5±16 MPa of the group with rough surface(Ra=17.2),and the fracture mode is cohesive.However,when the surface is smooth(Ra=3.8),the mean bond strength is 74.5 MPa 5 MPa and the fracture mode is mixed.The original surface with prominent structures formed by the partly melted powder particles,not only increases surface roughness but also significantly improves the bond strength by forming strong mechanical lock effect.Statistical analysis(Student’s t-test)demonstrates a significant difference(p<0.05)of the mean value of bond strength between the two groups.The experiments indicate the natural rough surface can enhance the metal-ceramic bond strength to over four times the minimum value(25 MPa)of the ISO 9693:1999 standard.It is found that the natural rough surface of SLM-made PFM can eliminate the porcelain collapse defect produced by traditional casting method in PFM restorations. | ZHANG Sheng LI Yong HAO Liang XU Tian WEI Qingsong SHI Yusheng | 2014 | Chinese Journal of Mechanical Engineering2014，27，1： | 7 |
| 9 | Selective laser melting of near-α titanium alloy Ti-6Al-2Zr-1Mo-1V:Parameter optimization, heat treatment and mechanical performance显示文摘This paper presents a comprehensive study conducted to optimize the selective laser melting(SLM)parameters and subsequent heat-treatment temperatures for near-α high-temperature titanium alloy Ti-6 Al-2 Zr-1 Mo-1 V(TA15),which is widely used in the aerospace industry.Based on the surface morphology and relative density analysis,the optimized process parameters were:laser power from 230 W to 380 W,scan speed from 675 mm/s to 800 mm/s,scan spacing of 0.12 mm,and layer thickness of0.03 mm.The effects of the laser power and the layer thickness on the phase constitutions,microstructure features,as well as room-temperature and high-temperature(500℃) tensile properties,were then studied to obtain an in-depth understanding of SLM-built TA15.Six typical temperatures(650,750,850,950,1000 and 1100℃) covering three representative temperature ranges,i.e.,martensite partial decomposition temperature range,martensite complete decomposition temperature range and above βtransus temperature,were subsequently selected as heat-treatment temperatures.The heat treatmentmicrostructure-mechanical property relationships of SLM-built TA15 were elucidated in detail.These results provide valuable information on the development of SLM-built TA15 alloy for industrial applications,and these findings are also beneficial to additive manufacturing of other near-α Ti alloys with desirable high-temperature properties. | Chao Cai Xu Wu Wan Liu Wei Zhu Hui Chen Jasper Chu Dong Qiu Chen-Nan Sun Jie Liu Qingsong Wei Yusheng Shi | 2020 | Journal of Materials Science & Technology2020，54，22： | 7 |
| 10 | Microstructure and properties of Ag/SnO2 functional material manufactured by selective laser melting显示文摘Ag/SnO2,as a promising and environment-friendly electrical contact material,is widely applied in low-voltage apparatus.But the properties of Ag/SnO2 composites is difficult to improve due to the poor distribution phases and difficult component design.In this work,the Ag/SnO2 composites are prepared by selective laser melting.To get better performance,Ag/SnO2 composites with different energy density were studied.The microstructure was observed by field emission scanning electron microscope.In addition,reinforced SnO2 phase was characterized by X-ray diffraction and transmission electron microscope.The results indicated that the microstructure,relative density and hardness of are influenced by energy density,while Ag/SnO2 composites with homogeneous microstructure,high relative density,higher hardness and lower electrical resistivity can be obtained by proper energy density(E?68 J/mm^3). | Yuanjie Zhang Bo Song Xiao Zhao Yusheng Shi | 2019 | Nano Materials Science2019，1，3： | 5 |
| 11 | 3D-Printed Superhydrophobic and Magnetic Device That Can Self-Powered Sense A Tiny Droplet Impact显示文摘Three-dimensional(3D)-printed magnetic soft architectures have attracted extensive attention and research from the engineering and material fields.The force-driven shape deformation of such architectures causes a change in the magnetic field distribution,indicating the capability to convert mechanical energy to electricity.Herein,we fabricate a flexible superhydrophobic and magnetic device by integrating two kinds of 3D printing approaches.The 3D-printed magnetic device(3DMD)exhibits a long-term stable mechanoelectrical conversion capacity under consecutive water droplet dripping.The output current of the 3DMD is higher than that of records in the existing literature.Combined with Maxwell numerical simulation,the mechanoelectrical conversion mechanism of the 3DMD is investigated,further guiding regulation of the diverse parameters.Moreover,three 3DMDs are integrated to light up a commercial light-emitting diode(LED)by a stream of collected rainwater.Such a combined design incorporating energy conversion is believed to promisingly motive advances in the 3D printing field. | Xuan Zhang Qi Wang Ruiping Zou Bo Song Chunze Yan Yusheng Shi Bin Su | 2022 | Engineering2022，8，8： | 4 |
| 12 | Effects of Structural Parameters on the Poisson’s Ratio and Compressive Modulus of 2D Pentamode Structures Fabricated by Selective Laser Melting显示文摘Metamaterials have been receiving an increasing amount of interest in recent years. As a type of metamaterial, pentamode materials (PMs) approximate the elastic properties of liquids. In this study, a finite-element analysis was conducted to predict the mechanical properties of PM structures by altering the thin wall thicknesses and layer numbers to obtain an outstanding load-bearing capacity. It was found that as the thin wall thickness increased from 0.15 to 0.45 mm, the compressive modulus of the PM structures increased and the Poisson’s ratio decreased. As the layer number increased, the Poisson’s ratio of the PM structures increased rapidly and reaches a stable value ranging from 0.50 to 0.55. Simulation results of the stress distribution in the PM structures confirmed that stress concentrations exist at the junctions of the thin walls and weights. For validation, Ti–6Al–4V specimens were fabricated by selective laser melting (SLM), and the mechanical properties of these specimens (i.e., Poisson’s ratio and elastic modulus) were experimentally studied. Good consistency was achieved between the numerical and experimental results. This work is beneficial for the design and development of PM structures with simultaneous load-bearing capacity and pentamodal properties. | Lei Zhang Bo Song Ruijie Liu Aiguo Zhao Jinliang Zhang Linrong Zhuo Guiping Tang Yusheng Shi | 2020 | Engineering2020，6，1： | 4 |
| 13 | Hybrid plasmon waveguide leveraging Bloch surface polaritons for sub-wavelength confinement显示文摘A novel hybrid plasmonic waveguide based on a guided Bloch surface polariton structure is proposed and investigated.This hybrid waveguide overcomes the weak confinement in the Bloch surface polariton structure caused by the diffraction limitation.By introducing a metal stripe near the dielectric ridge located on the periodic multilayer structure that is designed to support a TM polarized Bloch surface polariton,a sub-wavelength scale electric field confinement is realized.The coupling of the Bloch surface polariton and the surface plasmon polariton results in a strong field distribution within the gap between the metal stripe and the dielectric ridge.The variation of the characteristic of the hybrid mode is revealed via tuning the height of the ridge and the coupling distance.Sub-wavelength scale mode size is realized as well as a propagation length of about 100μm. | WAN YuHang ZHENG Zheng SHI XiaoGang BIAN YuSheng LIU JianSheng | 2013 | Chinese Science Bulletin2013，58，7： | 3 |
| 14 | Robotic-assisted versus open total pancreatectomy: a propensity score-matched study显示文摘Background:Total pancreatectomy(TP)is a complex surgical procedure with significant postoperative morbidity.Despite the narrowed range of indications for TP,the introduction of neoadjuvant chemotherapy and the increasing complexity of surgical resections performed in high-volume centers has increased the number of annually performed TPs,especially regarding malignant disease.The introduction of robotic-assisted pancreatic surgery has provided a novel and minimally invasive approach for TP,yet the feasibility of this technique is still unknown.This study assessed the safety and efficacy of robotic-assisted total pancreatectomy(RTP)compared to conventional open total pancreatectomy(OTP).Methods:All patients who underwent TP between March 2015 and July 2019 in a high-volume institution for pancreatic surgery were included in this retrospective study.Clinical data and perioperative outcomes were derived from the prospectively maintained institutional database.A 1:1 propensity score matching(PSM)method was utilized to compare the RTP and OTP cohorts to minimize bias.Results:A standardized surgical protocol was utilized for RTP following a learning curve of RPD and RDP.The median operative time for patients who underwent RTP was significantly decreased compared to those who underwent OTP[300(IQR,250-360)vs.360 min(IQR,300-525),P=0.031].Additionally,en bloc resection and spleen-preserving rates were also higher in the RTP cohort.Major 30-day morbidity(Clavien-Dindo>IIIa)and 90-day mortality were similar between the two cohorts.After a median follow-up time of 15(IQR,8-24)months,both the RTP and OTP cohorts had a comparable quality of life regarding exocrine and endocrine insufficiency.Conclusions:RTP appears to be safe and feasible when utilized in high-volume centers for the indicated management of benign and highly selected malignant pancreatic disease.However,further prospective randomized studies are needed to assess the feasibility of this approach. | Yuanchi Weng Mengmin Chen Georgios Gemenetzis Yusheng Shi Xiayang Ying Xiaxing Deng Chenghong Peng Jiabin Jin Baiyong Shen | 2020 | Hepatobiliary Surgery and Nutrition2020，9，6： | 3 |
| 15 | Rapid isolation and immune profiling of SARS-CoV-2 specific memory B cell in convalescent COVID-19 patients via LIBRA-seq显示文摘B cell response plays a critical role against SARS-CoV-2 infection.However,little is known about the diversity and frequency of the paired SARS-CoV-2 antigen-specific BCR repertoire after SARS-CoV-2 infection.Here,we performed single-cell RNA sequencing and VDJ sequencing using the memory and plasma B cells isolated from five convalescent COVID-19 patients,and analyzed the spectrum and transcriptional heterogeneity of antibody immune responses.Via linking BCR to antigen specificity through sequencing(LIBRA-seq),we identified a distinct activated memory B cell subgroup(CD11c^(high) CD95^(high))had a higher proportion of SARS-CoV-2 antigen-labeled cells compared with memory B cells.Our results revealed the diversity of paired BCR repertoire and the non-stochastic pairing of SARS-CoV-2 antigen-specific immunoglobulin heavy and light chains after SARS-CoV-2 infection.The public antibody clonotypes were shared by distinct convalescent individuals.Moreover,several antibodies isolated by LIBRA-seq showed high binding affinity against SARS-CoV-2 receptor-binding domain(RBD)or nucleoprotein(NP)via ELISA assay.Two RBD-reactive antibodies C14646P3S and C2767P3S isolated by LIBRA-seq exhibited high neutralizing activities against both pseudotyped and authentic SARS-CoV-2 viruses in vitro.Our study provides fundamental insights into B cell response following SARS-CoV-2 infection at the single-cell level. | Bing He Shuning Liu Yuanyuan Wang Mengxin Xu Wei Cai Jia Liu Wendi Bai Shupei Ye Yong Ma Hengrui Hu Huicui Meng Tao Sun Yanling Li Huanle Luo Mang Shi Xiangjun Du Wenjing Zhao Shoudeng Chen Jingyi Yang Haipeng Zhu Yusheng Jie Yuedong Yang Deyin Guo Qiao Wang Yuwen Liu Huimin Yan Manli Wang Yao-Qing Chen | 2021 | Signal Transduction and Targeted Therapy2021，6，6： | 2 |
| 16 | Selective laser sintering of HIPS and investment casting technology显示文摘 | Jmsong Yang Yusheng shi Qiwen shen | 2009 | Journal of Materials Processing Technology2009，209，： | 1 |
| 17 | Selective Laser Sintering of HIPS and Investment Casting Tech- nology显示文摘 | YANG Jiesong SHI Yusheng SHEN Qiwen | 2009 | Journal of Materials Processing Technolo- gy2009，209，： | 1 |
| 18 | Densificationbehavior of gas and water atomized 316L stainless steel powderduring selective laser melting 显示文摘 | Li Ruidi Shi Yusheng Wang Zhigang | 2010 | Applied Surface Science2010，256，13： | 1 |
| 19 | Complex object 3D measurement based on phase-shifting and a neural network 显示文摘 | Li Zhongwei Shi Yusheng Wang Congjun | 2009 | Optics Communications2009，282，14： | 1 |
| 20 | Effect of the capsule on deformation and densification behavior of nickel-based superalloy compact during hot isostatic pressing显示文摘The Shima yield criterion used in finite element analysis for nickel-based superalloy powder compact during hot isostatic pressing(HIP) was modified through uniaxial compression experiments. The influence of cylindrical capsule characteristics on FGH4096M superalloy powder compact deformation and densification behavior during HIP was investigated through simulations and experiments. Results revealed the simulation shrinkage prediction fitted well with the experimental shrinkage including a maximum shrinkage error of 1.5%. It was shown that the axial shrinkage was 1.7% higher than radial shrinkage for a cylindrical capsule with the size of ∮50 mm × 100 mm due to the force arm difference along the axial and radial direction of the capsule. The stress deviated from the isostatic state in the capsule led to the uneven shrinkage and non-uniform densification of the powder compact. The ratio of the maximum radial displacement to axial displacement increased from0.47 to 0.75 with the capsule thickness increasing from 2 to 4 mm. The pressure transmission is related to the capsule thickness, the capsule material performance, and physical parameters in the HIP process. | Lebiao Yang Xiaona Ren Chao Cai Pengju Xue MIrfan Hussain Yusheng Shi Changchun Ge | 2023 | International Journal of Minerals,Metallurgy and Materials2023，30，1： | 1 |
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