Journal
MATERIALS
Volume 11, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/ma11091683
Keywords
shape memory alloys; NiTi; additive manufacturing; selective laser melting; SLM; transformation behavior; functional properties
Categories
Funding
- National Key RAMP
- D Program of China [2018YFB1105100]
- Shandong Provincial Natural Science Foundation, China [ZR201709180018]
- China Postdoctoral Science Foundation [2017M622195]
- Fundamental Research Funds of Shandong University
- Research Foundation Flanders (FWO) [G.0366.15N]
- Spanish Ministerio de Economia y Competitividad [MAT2014-56116-C04-01-R]
- Ministry of Education and Science of the Russian Federation [3.1421.2017/4.6]
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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.
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