Achieving superior mechanical performance in FeCrAl alloys through serrated and pinning-enhanced grain boundaries

作者：Kun Zhang, Shuo Ma, Zhao Shen, Hui Wang, Shixin Gao, Gang Li, Xiaoqin Zeng · 发表于：Journal of Materials Research and Technology · 年份：2025 · DOI：10.1016/j.jmrt.2025.06.110 · 被引用次数：74 · 研究领域：Nuclear Materials and Properties、High Temperature Alloys and Creep、Fusion materials and technologies

Here, FeCrAl alloys with excellent overall mechanical properties were successfully developed through a more optimized and easily controlled solution and tempering heat treatment. Serrated grain boundaries, pinned by discontinuous nanoscale precipitates, were systematically investigated as a key strengthening mechanism. The distinct deformation and fracture behaviors of samples with varying grain boundary strength and stability were revealed.