Szczegóły publikacji
Opis bibliograficzny
Microstructure and texture control of Ni-Mn-Ga magnetic shape memory alloys manufactured by laser powder bed fusion / Anna Wójcik, Robert Chulist, Arkadiusz Szewczyk, Bartosz Morończyk, Łukasz Żrodowski, Rafał Wróblewski, Maciej Kowalczyk, Aleksandra Kolano-Burian, Przemysław Zackiewicz, Norbert Schell, Wojciech Maziarz // Additive Manufacturing ; ISSN 2214-8604. — 2024 — vol. 86 art. no. 104225, s. 1–14. — Bibliogr. s. 13–14, Abstr. — Publikacja dostępna online od: 2024-05-23. — A. Wójcik, R. Chulist, A. Szewczyk - afiliacja: Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Krakow
Autorzy (11)
- Wójcik Anna
- Chulist Robert
- Szewczyk Arkadiusz
- Morończyk Bartosz
- Żrodowski Łukasz
- Wróblewski Rafał
- Kowalczyk Maciej
- Kolano-Burian Aleksandra
- Zackiewicz Przemysław
- Schell Norbert
- Maziarz Wojciech
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 161585 |
|---|---|
| Data dodania do BaDAP | 2025-08-25 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.addma.2024.104225 |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Additive Manufacturing |
Abstract
The Laser Powder Bed Fusion (LPBF) process was used to manufacture Ni-Mn-Ga polycrystalline samples. The initial powders with a fine particle size of about 20 µm were firstly prepared by a ball milling from melt-spun ribbons. The microstructure and texture evolution of Ni-Mn-Ga alloy manufactured by LPBF were investigated employing SEM, TEM, and synchrotron radiation diffraction. Using two different scanning strategies, optimization of laser parameters and post-processing heat treatment, a homogeneous microstructure with a strong crystallographic texture was obtained. The localized heating/cooling conditions allow obtaining a layered structure with preferred <100> fiber orientations along the growth direction. The crystal structure and crystallographic texture drastically change when the laser oscillation mode is chosen. The strong crystalline anisotropy and layered-type microstructure have a significant impact on twining flow behavior giving rise to an anisotropic mechanical response. The variant reorientation during mechanical training is realized by the so-called orthogonal shearing. It is also shown that the resulting crystal structure and characteristic transformation temperatures are strongly dependent on chemical composition related to Mn losses and internal stresses along with chemical order creating metastable phases due to the extremely high cooling rate upon the 3D printing. Therefore, all the above parameters are thoroughly monitored during the three-stage fabrication process.
