Effect of laser powder bed fusion processing parameters on the microstructure and shape recovery of heat-treated Fe–30Mn–6Si alloy
Journal of Materials Science, cilt.61, sa.39, ss.30111-30130, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 61 Sayı: 39
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s10853-026-13504-2
- Dergi Adı: Journal of Materials Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Compendex, INSPEC, MEDLINE, Public Affairs Index, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Sayfa Sayıları: ss.30111-30130
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Evet
Özet
Fe–Mn–Si-based alloys are attractive shape memory materials that offer notable economic and processing advantages compared with conventional NiTi systems, making them promising candidates for large-scale and structural applications. In this study, Fe–30Mn–6Si alloy was fabricated via laser powder bed fusion (PBF-LB/M) using different combinations of laser power and hatch distance, followed by post-process annealing heat treatment. The microstructural characteristics, transformation behaviour, and shape recovery response were systematically evaluated. The results indicated that variations in hatch distance did not lead to a clear systematic change in the shape recovery response under constant laser power, although differences in transformation characteristics were observed. On the other hand, within the present limited dataset, the specimens produced at higher laser powers exhibited higher average early-cycle shape recovery ratios during the investigated five-cycle window. The annealed specimens exhibited high shape recovery performance, with first-cycle shape recovery ratios approaching 80%. Within the investigated five-cycle window, the largest increase generally occurred between the first and second cycles, while only limited additional changes were observed from the second to the fifth cycle under 4% compression loading.