DOI number:10.1016/j.materresbull.2026.114255
Journal:Materials Research Bulletin
Abstract:To improve the low strength of FeCoNi-based multi-principal element alloys, this work designs a Fe29Co28.9Ni28.9Al7.8Ta5.4 alloy. Combined with Pandat thermodynamic calculations, microstructural evolution and tensile properties are investigated under different aging temperatures. The alloy consists of an FCC matrix and Ta-rich Laves phase after solution treatment. Nano L12 phases precipitate uniformly during aging. With rising temperature, L12 particles grow and their volume fraction declines. Aging at 770 °C yields superior strength-ductility performance, driven by L12 precipitation strengthening. This research offers valuable insights for optimizing composition and heat treatment of high-performance FeCoNi-based alloys.
Co-author:Qun Zou
First Author:Bo Li
Correspondence Author:Le Fu*, Gemei Cai*
Volume:204
Page Number:114255
Translation or Not:no
Included Journals:SCI
Links to published journals:https://www.sciencedirect.com/science/article/pii/S0025540826002667