Szczegóły publikacji
Opis bibliograficzny
An estimate of microstrain and dislocation density in as-built unalloyed molybdenum processed by electron beam powder bed fusion / L. S. Aota, A. Kirchner, D. Abou-Ras, A. WINKELMANN, H. R. Z. Sandim // International Journal of Refractory Metals & Hard Materials ; ISSN 0958-0611 . — 2026 — vol. 139 art. no. 107824, s. 1–6. — Bibliogr. s. 5–6, Abstr. — Publikacja dostępna online od: 2026-04-15
Autorzy (5)
- Aota L. S.
- Kirschner A.
- Abou-Ras Daniel
- AGHWinkelmann Aimo
- Sandim H. R. Z.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 168169 |
|---|---|
| Data dodania do BaDAP | 2026-07-29 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ijrmhm.2026.107824 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | International Journal of Refractory Metals & Hard Materials |
Abstract
Molybdenum is a refractory metal with unique properties such as high melting point and a low thermal expansion coefficient, a combination of properties suitable for high temperature structural applications. The room temperature brittleness is a major drawback for forming and shaping operations. Electron beam powder bed fusion (PBF-EB/M) is an attractive processing method to produce such parts. Yet the interplay between residual stresses and lattice defects, responsible for the microstructure development upon processing, remains elusive. Here, a combination of X-ray and electron backscatter diffraction (EBSD) revealed a strong 〈001〉 // BD texture in unalloyed molybdenum processed by PBF-EB/M. Electron channeling contrast imaging was employed to visualize dislocation structures within coarse <001> // BD grains. Dislocations arrange as free dislocations, dislocation tangles and subgrain boundaries with misorientations generally below 2°. High-Resolution EBSD strain analysis showed significant elastic microstrain (10−4 to 10−3) and high dislocation density (1014–1015 m−2).
