Fatigue database of complex metallic alloys

Abstract

The past few decades have witnessed rapid progresses in the research and development of complex metallic alloys such as metallic glasses and multi-principal element alloys, which offer new solutions to tackle engineering problems of materials such as the strength-toughness conflict and deployment in harsh environments and/or for long-term service. A fatigue database (FatigueData-CMA2022) is compiled from the literature by the end of 2022. Data for both metallic glasses and multi-principal element alloys are included and analyzed for their statistics and patterns. Automatic extraction and manual examination are combined in the workflow to improve the efficiency of processing, the quality of published data, and the reusability. The database contains 272 fatigue datasets of S-N (the stress-life relation), ε-N (the strain-life relation), and da/dN-ΔK (the relation between the fatigue crack growth rate and the stress intensity factor range) data, together with the information of materials, processing and testing conditions, and mechanical properties. The database and scripts are released in open repositories, which are designed in formats that can be continuously expanded and updated.

Advances in Design and Development of High-Performance Super Alloys for Extreme Environments

“…Tensile testing, fatigue tests, and creep tests are often employed to investigate the influence of customised microstructure on the mechanical response of materials subjected to different loading situations. The process of comparing experimental mechanical data with computer forecasts serves to verify that the intended microstructure of a material yields the appropriate performance characteristics [41]. In the context of superalloy development for gas turbine blades, the process of experimental validation would entail submitting samples of the alloy to simulated settings that mimic harsh operating environments.…”