Ti-6Al-4V合金电弧熔丝增材的组织性能研究进展

A review of the wire arc additive manufacturing of Ti-6Al-4V alloy:properties,defects and quality improvement

Ti-6Al-4V钛合金具有密度低、高温下组织稳定、强度高的特点,被广泛应用于机翼翼梁、起落架支撑肋等航空工业关键零部件的制造。电弧熔丝增材技术研究始于20世纪80年代,该技术具有成型效率高、原材料利用率高、设备简单等优势。目前,学界对Ti-6Al-4V合金电弧熔丝增材技术开展了广泛研究并已取得一定成果。笔者综述了电弧熔丝增材制造技术的发展历史及研究热点,并整合了国内外Ti-6Al-4V合金电弧熔丝增材技术的最新研究及应用情况,对电弧熔丝增材制造Ti-6Al-4V合金的组织性能特性及调控工艺进行了总结与展望。

Ti-6Al-4V titanium alloy has the characteristics of low density,stable structure and high strength at high temperature.It is widely used in the manufacturing of key parts of aviation industry,such as wing beam,landing gear support rib.The wire arc additive manufacturing technology began in 1980s,which has the advantages of high forming efficiency,high utilization rate of raw materials and simple equipment.At present,the wire arc additive manufacturing technology of Ti-6Al-4V alloy has been widely studied and some progresses have been achieved.This paper reviews the development history and research hotspots of wire arc additive manufacturing technology,and summarizes its latest research and application at home and abroad.The microstructure,mechanical properties and control technology Ti-6Al-4V alloy produced by wire arc additive manufacturing are summarized and prospected.