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| Ni-loss compensation and thermomechanical property recovery of 3D printed NiTi alloys by pre-coating Ni on NiTi powder | |
| Ye, D.1,2; Li, S. F.1,2,3; Misra, R. D. K.4; Zheng, R.1,2; Yang, Y. F.1,2,3 | |
| 2021-11-01 | |
| Source Publication | ADDITIVE MANUFACTURING
 |
| ISSN | 2214-8604 |
| Volume | 47Pages:10 |
| Abstract | The approach of pre-coating Ni on NiTi powder was adopted as an effective route to address the thermomechanical property degradation of NiTi alloy caused by Ni-loss during the printing process of laser powder bed fusion. The electroless plating process of Ni on NiTi powder was initiated with the removal of the outermost TiO2 layer by alkaline solution and the exposure of Ni catalytic nucleation site. The newly exposed Ni was an active catalyst for coating Ni and eventually triggered the deposition of Ni on NiTi powder via self-catalytic reaction. The intrinsic homogeneity of Ni, as a major alloying element in NiTi powder, ensured high uniformity of Ni-coating on the surface of the powder and good sphericity, necessary for good printability. Furthermore, Nicoating increased laser absorbability, and a higher content of Ni compared to the theoretical value was thereby required to compensate for the Ni-loss. Simultaneously, densification was enhanced even at lower laser energy density on using Ni-coated powder. During the printing process, ultrafine Ni-coating was rapidly homogenized such that the thermomechanical property was completely recovered. As a consequence, it is underscored that Ni-loss can be addressed by compensating Ni on the original powder prior to the printing process, providing a new pathway toward printing of high-performance shape memory alloys. |
| Keyword | Laser powder bed fusion Electroless plating NiTi shape memory alloy Ni-loss Composite powder |
| DOI | 10.1016/j.addma.2021.102344 |
| Language | 英语 |
| WOS Keyword | SHAPE-MEMORY ALLOYS ; TITANIUM ; PERFORMANCE |
| Funding Project | National Key Research and Development Program of China[2018YFB1105100] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20190011] ; Shandong Provincial Science and Technology Innovation Project[2019JZZY010363] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Manufacturing ; Materials Science, Multidisciplinary |
| Funding Organization | National Key Research and Development Program of China ; Scientific Instrument Developing Project of the Chinese Academy of Sciences ; Shandong Provincial Science and Technology Innovation Project |
| WOS ID | WOS:000707759900004 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/50655 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Yang, Y. F. |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Nanjing IPE Inst Green Mfg Ind, Nanjing 211135, Peoples R China 4.Univ Texas El Paso, Dept Met Mat & Biomed Engn, 500W Univ Ave, El Paso, TX 79968 USA |
| First Author Affilication | Center of lonic Liquids and Green Engineering |
| Corresponding Author Affilication | Center of lonic Liquids and Green Engineering |
| Recommended Citation GB/T 7714 | Ye, D.,Li, S. F.,Misra, R. D. K.,et al. Ni-loss compensation and thermomechanical property recovery of 3D printed NiTi alloys by pre-coating Ni on NiTi powder[J]. ADDITIVE MANUFACTURING,2021,47:10. |
| APA | Ye, D.,Li, S. F.,Misra, R. D. K.,Zheng, R.,&Yang, Y. F..(2021).Ni-loss compensation and thermomechanical property recovery of 3D printed NiTi alloys by pre-coating Ni on NiTi powder.ADDITIVE MANUFACTURING,47,10. |
| MLA | Ye, D.,et al."Ni-loss compensation and thermomechanical property recovery of 3D printed NiTi alloys by pre-coating Ni on NiTi powder".ADDITIVE MANUFACTURING 47(2021):10. |
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