选区激光熔化成形Ti-6Al-4V钛合金的研究进展  

Research progress on selective laser melting forming of Ti-6Al-4V titanium alloy

作　　者：姚碧波 彭钰洋 黎振华[2] 李海 王丛 YAO Bi-bo;PENG Yu-yang;LI Zhen-hua;LI Hai;WANG Cong(Facultly of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500 [2]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《材料热处理学报》2024年第8期27-40,共14页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51961017);云南省基础研究计划项目(202101AU070014,202101AS070017);昆明理工大学人培项目(KKSY201901012)。

摘　　要：Ti-6Al-4V钛合金具备良好的生物相容性、较小的密度以及较高的比强度而常用于航空领域和生物医学领域。选区激光熔化技术作为一种增材制造技术能够制备复杂的零件而被大量用于成形钛合金。选区激光熔化成形的钛合金相比于传统工艺有着更加优异的强度,但是塑性较差。如何制备出成型质量好、力学性能优异的钛合金依然是选区激光熔化技术面临的挑战。基于此,本文结合国内外研究现状,综述了选区激光熔化成形钛合金的进展,包括工艺参数和能量密度以及制备过程中所产生的缺陷对合金性能的影响,探讨了缺陷产生的原因;并总结了后处理对成形试样的拉伸性能和疲劳性能的影响;最后对增材制造钛合金的进一步研究方向进行了展望。Ti-6Al-4V titanium alloy is commonly used in the aviation and biomedical fields due to its good biocompatibility,low density and high specific strength.Selective laser melting technology,as an additive manufacturing technology,is widely used for forming titanium alloys due to its ability to prepare complex parts.Compared to traditional processes,titanium alloys formed by selective laser melting have superior strength,but poor plasticity.How to prepare titanium alloys with good forming quality and excellent mechanical properties remains a challenge for selective laser melting technology.Based on this,combining domestic and foreign research status,this article reviews the progress of selective laser melting forming of titanium alloys,including the effects of process parameters,energy density and the defects generated during the preparation process on the properties of titanium alloys,and explores the reasons for defect generation.The influence of post-treatment on the tensile and fatigue properties of formed specimens is summarized,finally,further research directions for additive manufacturing of titanium alloys are discussed.

关 键 词：TI-6AL-4V钛合金 选区激光熔化 工艺参数 微观组织 拉伸性能 疲劳性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]