可生物降解镁合金微细管的加工成形:坯料超细晶化、工艺参数优化、新技术开发及应用

镁合金作为新型可生物降解材料在血管支架等植介入产品领域具有广阔的应用前景,然而镁合金微细管材的精密加工特别是冷成形十分困难,这是制约其大规模临床推广应用的主要因素之一。全面综述了近期关于可生物降解镁合金微细管加工成形的研究进展,重点介绍了镁合金坯料显微组织的调控,镁合金微细管精密加工参数的优化和新型加工技术的开发及应用。最后,指出了可生物降解镁合金微细管加工成形的研究方向。

Advances in Processing and Forming of Biodegradable Magnesium Alloy Micro-tube:Billet Grain Refinement, Process Optimization, and Technological Development

Magnesium alloys,as a new emerging variety of biodegradable materials,have broad application prospects in the field of implantation and intervention products.However,the precise processing of magnesium alloy micro-tubes,especially cold working,is of great difficulty,and has become the major restriction for their extensive clinical application.In this paper,the research progress of the processing of biodegradable magnesium alloys micro-tubes is comprehensively reviewed,with emphasis on the control of the microstructure of magnesium alloy billets,the parameters optimization of the precise processing of magnesium alloys micro-tubes,as well as development and appli-cation of new processing technologies.We also propose a brief prospect on the development trends for micro-tube pro-cessing and forming of this key species of biodegradable materials.