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Microstructure and Properties of ZL101 Alloy Affected by Substrate Movement Speed of a Novel Semisolid Continuous Micro Fused-Casting for Metal Process 被引量:6
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作者 罗晓强 韩永军 +2 位作者 LI Qingbin HU Xiaoming XUE Lingwei 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第3期715-719,共5页
A novel semisolid continuous Micro Fused-Casting additive manufacturing technology for producing a ZL101 alloy strip was developed, Micro Fused-Casting means that the semisolid metal slurry was pressed out from the ou... A novel semisolid continuous Micro Fused-Casting additive manufacturing technology for producing a ZL101 alloy strip was developed, Micro Fused-Casting means that the semisolid metal slurry was pressed out from the outlet of bottom of crucible to the movable plate. The degree of sub-cooling was easily provided by movement of substrate in the micro fused-casting area. Under the aid of 3 D manufacturing software, the ZL101 alloy strip was solidified and formed layer by layer. The microstructure and properties of ZL101 semisolid slurry were improved by the cooling conditions. The results showed that the ZL101 alloy strip samples fabricated by Micro Fused-Casting had uniform structures and good performances with the substrate movement speed at 20 mm/s and the temperature at 590 ℃, the ultimate tensile strength and elongation of the ZL101 alloy strip reached 242.59 MPa and 7.71%, while the average Vickers hardness was 82.55 HV. 展开更多
关键词 micro fused-casting ZL101 alloy semisolid substrate movement speed additive manufacturing
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Recent Advances and Challenges in Multi-Photon 3D Nanoprinting
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作者 Fayu Chen Shaoxi Shi +8 位作者 Songyan Xue Huace Hu Zexu Zhang Xuhao Fan Mingduo Zhang Xinger Wang Zhe Zhao Hui Gao Wei Xiong 《Engineering》 2025年第6期13-34,共22页
Multi-photon three-dimensional(3D)nanoprinting technology,renowned for its 3D processing capability and nano-scale resolution beyond the diffraction limit,has garnered significant attention in the micro/nano-additive ... Multi-photon three-dimensional(3D)nanoprinting technology,renowned for its 3D processing capability and nano-scale resolution beyond the diffraction limit,has garnered significant attention in the micro/nano-additive manufacturing field.This technology finds widespread applications in optics,biology,and mechanical engineering research.However,its broader adoption in industrial production and applications has been hindered by limitations such as relatively slow processing speed and restricted material formability and functionality.This paper presents the latest advancements in multi-photon 3D nanoprinting,with a focus on analyzing optical methods to enhance the processing speed of scanning and projection techniques.Additionally,it examines issues related to the formability and functionality of commonly used photosensitive materials,including organic polymers,inorganic compounds,and composite materials.In conclusion,this paper offers a comprehensive summary from the perspectives of productivity,cost,materials,and cross-scale processing,along with proposed routes and future directions. 展开更多
关键词 micro/nano 3D additive manufacturing Multi-photon Laser direct writing Cross-scale machining Functional materials
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免征农业税政策对农民有益影响的微观经济学分析 被引量:3
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作者 陈诗军 罗敏 《安徽农业科学》 CAS 北大核心 2006年第16期4164-4166,共3页
从微观角度运用西方经济学中的消费者理论、生产者理论对免征农业税给农民个体所带来的有益影响进行了简单分析,得出了免征农业税政策利国利民的结论。同时指出免税政策也带来一些问题,并就其提出相关的建议。
关键词 免征农业税 农民增收 微观经济
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