摘要
镍钛合金是一种常见的智能材料,具有优良的形状记忆效应,在航空航天、医学和电子等领域具有广泛应用。激光选区熔化技术能够突破传统制造工艺的局限,成形出形状复杂且性能优异的镍钛合金构件,使构件的形状、性能和功能在时间和空间维度上实现可控变化,是"4D打印"的研究热点方向之一。本文简要介绍了激光选区熔化成形镍钛合金的国内外研究进展与技术现状,分析了成形工艺、热处理工艺等对镍钛合金成形件相变温度以及形状记忆效应和超弹性两大性能的影响,总结了激光选区熔化成形镍钛合金较为适宜的工艺参数,并对SLM成形镍钛合金的未来发展进行了展望,为镍钛合金激光选区熔化"4D打印"提供参考。
Owing to its excellent shape memory effect, nitinol is a smart material that has been widely used in fields such as aerospace, medicine, and electronics. Nitinol components with complex shapes and desirable properties can be produced by selective laser melting, which overcomes the limitations of traditional manufacturing. Selective laser melting enables the shapes, properties, and functionalities of the components to achieve controllable changes in time and space dimensions, which is one of the popular research topics in "4 D printing". In this study, the research progress and technology status of nitinol formed by selective laser melting are briefly reviewed. Various influence factors on the transformation temperatures, shape memory effect, and superelasticity of nitinol are investigated, in which the influence factors are related to forming process, heat treatments, etc. Moreover, the suitable process parameters of nitinol formed by selective laser melting are summarized. Finally, a prospect for future development of deposition of nitinol by selective laser melting is presented. This study provides a reference for "4 D printing" of nitinol formed by selective laser melting.
作者
胡泽华
宋长辉
刘林青
杨永强
胡平
Hu Zehua;Song Changhui;Liu Linqing;Yang Yongqiang;Hu Ping(School of Mechanical&Automotive Engineering South China University of Technology Guangzhou,Guangdong 510641,China;School of Power and Mechanical Engineering Wuhan University Wuhan,Hubei 430072,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2020年第12期96-107,共12页
Chinese Journal of Lasers
基金
国家重点研发计划(2018YFB1105100)
中央高校基本科研业务费(2019MS060)
广东省特支计划(2019TQ05Z110)
装发预研基金(6140923030102)。
关键词
激光技术
镍钛合金
激光选区熔化
相变温度
超弹性
形状记忆效应
laser technique
nitinol
selective laser melting
transformation temperatures
superelasticity
shape memory effect
