Nickel-Based Superalloy Microstructure, Fatigue, and High-Temperature Performance
This community investigates the structural integrity and mechanical behavior of nickel-based superalloys, specifically focusing on how their internal microstructure governs performance under extreme heat, stress, and cyclic loading.
The research centers on single-crystal and directionally solidified nickel-based superalloys, including Inconel 718, designed for gas turbine applications. Key areas of study include the evolution of microstructures during heat treatment and service, the mechanisms of creep and fatigue crack growth, and the effects of oxidation and hot corrosion. Methods span powder metallurgy, crystal plasticity modeling, and machine learning for life prediction. The work addresses specific failure modes such as grain boundary brittleness and deformation behavior at high temperatures, aiming to optimize alloy composition and processing for durability in aeroengine components.
The largest share of the community's output is found in nickel research, accounting for 3.0% of all tracked nickel research, with 5,644 papers in this group. Cobalt and chromium also appear frequently, contributing 677 and 534 papers respectively, though they represent smaller shares of their respective element research.
The community comprises 15,437 papers, published primarily in the Journal of Alloys and Compounds, Materials Science and Engineering A, and Metallurgical and Materials Transactions A. Recent work continues to focus on the microstructural evolution of nickel-based superalloys, including studies on grain boundary uniformity in welded joints, oxidation-creep damage in coated systems, and the role of yttrium in creep deformation mechanisms.