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Materials 2018, 11(9), 1683; https://doi.org/10.3390/ma11091683

A Short Review on the Microstructure, Transformation Behavior and Functional Properties of NiTi Shape Memory Alloys Fabricated by Selective Laser Melting

1
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jingshi Road 17923, Jinan 250061, China
2
School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, China
3
Departament de Física, Universitat de les Illes Balears, Cra Valldemossa km 7.5, E07122 Palma de Mallorca, Spain
4
ITMO University, Kronverkskiy av. 49, 197101 St. Petersburg, Russia
5
Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, B3001 Heverlee, Belgium
*
Author to whom correspondence should be addressed.
Received: 27 July 2018 / Revised: 6 September 2018 / Accepted: 7 September 2018 / Published: 11 September 2018
(This article belongs to the Section Smart Materials)
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Abstract

Due to unique functional and mechanical properties, NiTi shape memory alloys are one of the most promising metallic functional materials. However, the poor workability limits the extensive utilization of NiTi alloys as components of complex shapes. The emerging additive manufacturing techniques provide high degrees of freedom to fabricate complex structures. A freeform fabrication of complex structures by additive manufacturing combined with the unique functional properties (e.g., shape memory effect and superelasticity) provide great potential for material and structure design, and thus should lead to numerous applications. In this review, the unique microstructure that is generated by selective laser melting (SLM) is discussed first. Afterwards, the previously reported transformation behavior and mechanical properties of NiTi alloys produced under various SLM conditions are summarized. View Full-Text
Keywords: shape memory alloys; NiTi; additive manufacturing; selective laser melting; SLM; transformation behavior; functional properties shape memory alloys; NiTi; additive manufacturing; selective laser melting; SLM; transformation behavior; functional properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, X.; Kustov, S.; Van Humbeeck, J. A Short Review on the Microstructure, Transformation Behavior and Functional Properties of NiTi Shape Memory Alloys Fabricated by Selective Laser Melting. Materials 2018, 11, 1683.

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