Research and Development in NiTi Shape Memory Alloys Fabricated by Selective Laser Melting

被引：11
作者：
Yang Chao [1 ]
Lu Haizhou [2 ]
Ma Hongwei [1 ]
Cai Weisi [1 ]
机构：
[1] South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Metall M, Guangzhou 510640, Peoples R China
[2] Guangdong Polytech Normal Univ, Sch Mechatron Engn, Guangzhou 510665, Peoples R China
来源：
ACTA METALLURGICA SINICA | 2023年 / 59卷 / 01期
基金：
中国国家自然科学基金;
关键词：
selective laser melting; NiTi shape memory alloy; microstructure; thermomechanical property; porous NiTi; THERMOMECHANICAL RESPONSE; TRANSFORMATION BEHAVIOR; HEAT-TREATMENT; MICROSTRUCTURE; DEFORMATION; COMPOSITES; PARAMETERS;
D O I：
10.11900/0412.1961.2022.00422
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The postprocessing/machining of NiTi shape memory alloys (SMAs) is extremely challenging and difficult due to their low thermal conductivity and the high reactivity of ready-made NiTi parts. As a typical metal additive manufacturing technology, selective laser melting (SLM) offers significant advantages and can directly fabricate complex metallic parts, effectively address the problems of cold workability and machinability for NiTi parts. By establishing the relationship between processing parameters, microstructure, functional properties, and revealing the underlying mechanisms for altered phase transformation behavior and functional properties of SLM NiTi SMAs, it can serve as a theoretical foundation for expanding the applications of SLM NiTi SMAs. As a result, this paper comprehensively evaluates the formability, phase transformation behavior, microstructure, mechanical properties, and thermomechanical properties of SLM NiTi SMAs. Additionally, the design of SLM porous NiTi SMAs, as well as their biocompatibility, are discussed. Eventually, the future development trend and critical problems in studying SLM NiTi SMAs are investigated.
引用
收藏
页码：55 / 74
页数：20
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