摘要
NiTi形状记忆合金卓越的功能特性、生物相容性、高阻尼及低刚度、耐腐蚀等性能,深受广泛关注。NiTi形状记忆合金制备、加工困难,成为阻碍NiTi形状记忆合金应用的关键。近20年发展起来的增材制造技术,能直接成形制造复杂的NiTi形状记忆合金结构,在航空航天、医疗设备等领域具有巨大应用价值和发展前景。本文结合国内外NiTi形状记忆合金激光增材制造研究中面临的主要问题和解决方法作综合评述。具体包括NiTi形状记忆合金传统制造和激光增材制造对比;激光能量输入和热处理工艺对激光增材制造NiTi形状记忆合金微观组织、机械力学性能和功能特性的影响;及展望未来激光增材制造NiTi形状记忆合金研究方向。
NiTi shape memory alloys have received extensive attention due to their excellent functional properties, biocompatibility, damping properties, low stiffness, and corrosion resistance. However, the processability and machinability of NiTi shape memory alloys are of great difficulties. In the past 20 years, the additive manufacturing technology has been developed sharply, resulting in the direct fabrication for complex structure of NiTi shape memory alloys, which has a great potential value in the aerospace, medical equipment and other fields. This paper makes a comprehensive review of the key issues and solutions in the domestic and foreign NiTi shape memory alloys laser additive manufacturing researches, including the comparison of the traditional process manufacturing and additive manufacturing of NiTi shape memory alloys, and the effect of laser additive manufacturing process parameters and post-heat treatment parameters on the microstructure, mechanical properties and functional properties of NiTi shape memory alloys. Based on research results, the future direction of NiTi shape memory alloys laser additive manufacturing is predicted.
作者
邓怀波
陈玉华
李树寒
邓云发
许明方
季迪
Deng Huaibo;Chen Yuhua;Li Shuhan;Deng Yunfa;Xu Mingfang;Ji Di(Nanchang Hangkong University,Nanchang 330063,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2019年第12期4119-4130,共12页
Rare Metal Materials and Engineering
基金
国家自然科学基金（51565040）
航空科学基金（2014ZE56016）
江西省科技计划项目（20151BBE50034）
关键词
NITI形状记忆合金
激光增材制造
工艺方法
微观组织
功能特性
NiTi shape memory alloys
laser additive manufacturing
process method
microstructure
functional properties
