文章摘要
王广春,朱杰,刘闪.微细材料细晶处理方法及其研究发展[J].精密成形工程,2017,9(5):19-24.
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
投稿时间:2017-08-14  最后修改时间:2017-09-10
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)
作者单位
王广春 山东大学 材料液固结构演变与加工教育部重点实验室济南 250061 
朱杰 山东大学 材料液固结构演变与加工教育部重点实验室济南 250061 
刘闪 山东大学 材料液固结构演变与加工教育部重点实验室济南 250061 
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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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