Fatigue database of complex metallic alloys

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 <em>S</em>-<em>N</em> (the stress-life relation), <em>ε</em>-<em>N</em> (the strain-life relation), and d<em>a</em>/d<em>N</em>-Δ<em>K</em> (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. <br> Article DOI: 10.1038/s41597-023-02354-1

过去数十年间，金属玻璃(metallic glasses)与多主元合金(multi-principal element alloys)等复杂金属合金的研发工作取得了长足进展，这类材料为解决材料工程领域的强度-韧性矛盾、极端环境部署及长期服役等工程难题提供了全新的解决方案。本研究于2022年底基于已发表文献构建了疲劳数据库FatigueData-CMA2022。该数据库涵盖上述两类合金的相关数据，并对其统计特征与分布规律开展了分析。为提升数据处理效率、保障公开数据质量并增强复用性，本工作采用自动提取与人工核验相结合的流程完成数据整理。数据库共包含272组疲劳数据集，涵盖S-N（应力-寿命关系）、ε-N（应变-寿命关系）以及da/dN-ΔK（疲劳裂纹扩展速率与应力强度因子幅之间的关系）三类数据，同时附带材料、制备与测试条件以及力学性能等相关信息。该数据库及配套脚本已开源至公开仓库，其设计格式支持后续持续扩展与更新。
文章DOI：10.1038/s41597-023-02354-1

搜集汇总

背景与挑战

背景概述

该数据集是一个关于复杂金属合金（如金属玻璃和多主元合金）疲劳性能的开放数据库，包含截至2022年从文献中收集的272个疲劳数据集，涵盖应力-寿命、应变-寿命和疲劳裂纹扩展速率等关键关系。数据集采用自动提取与手动检查相结合的方法确保数据质量，并以多种格式发布，旨在支持材料疲劳研究的可重用性和持续更新。