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| 微细材料细晶处理方法及其研究发展 |
| Grain Refining Methods and Its Research Development of Micro-size Materials |
| Received:August 14, 2017 Revised:September 10, 2017 |
| DOI：10.3969/j.issn.1674-6457.2017.05.002 |
| 中文关键词: 微细材料 晶粒细化 微观结构调控 大塑性变形 电流辅助形变 |
| 英文关键词: micro-size materials grain refinement microstructure controlling severe plastic deformation electrically- assisted deformation |
| 基金项目:国家自然科学基金（51775311） |
| Author Name | Affiliation | | WANG Guang-chun | Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China | | ZHU Jie | Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China | | LIU Shan | Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China |
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| 中文摘要: |
| 近些年微成形技术的研究热度不断增高，金属薄板、箔材及丝材等可直接用于微型件制造的微细材料缺少专门性研究，微细材料的微观结构与性能直接影响微型件的成形质量。综合评述了大塑性变形细晶方法、电流辅助工艺和微观结构调控等方面的相关研究，着重介绍了适合于微细材料的反复折弯压直和限制模压变形2种反复折弯形变细晶的方法。分析了微细材料细晶处理存在的问题，提出了适合用于微细材料的细晶及增塑处理的研究方法，展望了微细材料电流辅助形变工艺和微观结构调控的研究方向。开展了微成形用微细材料预处理方法与相关技术研究，对促进微成形技术的发展具有重要的理论意义和应用价值。 |
| 英文摘要: |
| In recent years, the research interest of micro forming technology is increasing, but there is a lack of special research on the micro-size materials directly used for micro-forming, such as thin metal sheets, metal foils and metal wires. Deformation qualities of micro-parts are heavily relying on microstructures and properties of the micro-size materials. This article briefly summarized the methods of grain refinement by severe plastic deformation, electrically-assisted deformation and microstructure controlling, emphatically introduced the repetitive corrugation and straightening (RCS) and constrained groove pressing(CGP), which were suitable for the repetitive roll bending and straightening of the micro-size materials. The problem of grain refinement of micro-size materials was analyzed. Research methods for grain refinement and enhanced ductility of micro-size materials were presented. The research direction of electrically-assisted deformation and microstructure controlling was prospected. The research on the pre-treatment methods and related technologies of micro-size materials is of great important theoretical significance and application value to promote the development of micro forming technologies. |
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