Ultra-uniform, strong and ductile 3D printed titanium alloy through bifunctional alloy design

Coarse columnar grains and heterogeneously distributed phases commonly form in metallic alloys produced by three-dimensional (3D) printing and are often considered undesirable because they can impart non-uniform and inferior mechanical properties. We demonstrate a design strategy to unlock consistent and enhanced properties directly from 3D printing. Using Ti−5Al−5Mo−5V−3Cr as a model alloy, we show that adding molybdenum (Mo) nanoparticles promotes grain refinement during solidification and suppresses the formation of phase heterogeneities during solid-state thermal cycling. The microstructural change due to the bifunctional additive results in uniform mechanical properties and simultaneous enhancement of both strength and ductility. We demonstrate how this alloy can be modified by a single component to address unfavourable microstructures, providing a pathway to achieve desirable mechanical characteristics directly from 3D printing., These datasets were collected at The University of Queensland (Australia) and Chongqing University (China) from 2021 to 2023. Details for each dataset are provided in the README file. Datasets included: 1) Tensile engineering stress-strain data for Ti-5553 horizontal specimens Number of Ti-5553 horizontal specimens The engineering strain The engineering stress 2) Tensile engineering stress-strain data for Ti-5553 vertical specimens Number of Ti-5553 vertical specimens The engineering strain The engineering stress 3) Tensile engineering stress-strain data for Ti-5553+5Mo horizontal and vertical specimens Number of Ti-5553 horizontal and vertical specimens The engineering strain The engineering stress 4) TEM-EDX line scanning The distance of TEM-EDX line scan The counts of element titanium (Ti) from the line scan The counts of element molybdenum (Mo) from the line scan 5) DICTRA simulation of the composition profile of molybdenum (Mo) at the interface of a Mo particle and titanium..., , This README file was generated on 2023-12-19 by Jingqi Zhang. **GENERAL INFORMATION** 1. Title of Dataset: Ultra-uniform, strong and ductile 3D printed titanium alloy through bifunctional alloy design 2. Author Information ``` **A. Corresponding Author Contact Information** * Name: Matthew Dargusch * Institution: The University of Queensland * Address: Level 6, Advanced Engineering Building (49), The University of Queensland, St Lucia, QLD 4072, Australia. * Email: [e-mail] **B. First Author Contact Information** * Name: Jingqi Zhang * Institution: The University of Queensland * Address: Room 634, Level 6, Advanced Engineering Building (49), The University of Queensland, St Lucia, QLD 4072, Australia. * Email: [e-mail] ``` 3. Date of data collection (single date, range, approximate date): 2021-2023 4. Geographic location of data collection: The University of Queensland (Australia) an...采用三维（3D）打印制备的金属合金中通常会形成粗大柱状晶与非均匀分布相，这类微观组织通常被认为是不利的，因为它们会导致力学性能不均匀且劣化。本研究提出了一种设计策略，可直接通过3D打印获得稳定且优异的力学性能。以Ti-5Al-5Mo-5V-3Cr（Ti-5553）合金为模型体系，我们发现添加钼（Mo）纳米颗粒可在凝固过程中促进晶粒细化，并抑制固态热循环过程中非均匀相的形成。这种双功能添加剂引发的微观组织演变，可使合金力学性能趋于均匀，同时实现强度与塑性的协同提升。本研究证明，仅通过单一组分改性即可解决3D打印合金的不利微观组织问题，为直接通过3D打印获得优异力学性能提供了可行路径。 本数据集采集于澳大利亚昆士兰大学与中国重庆大学，采集时间为2021年至2023年。各数据集的详细信息请参见README文件。 包含的数据集如下： 1) Ti-5553水平试样拉伸工程应力-应变数据 - Ti-5553水平试样数量 - 工程应变 - 工程应力 2) Ti-5553垂直试样拉伸工程应力-应变数据 - Ti-5553垂直试样数量 - 工程应变 - 工程应力 3) Ti-5553+5Mo合金水平与垂直试样拉伸工程应力-应变数据 - Ti-5553+5Mo合金水平及垂直试样数量 - 工程应变 - 工程应力 4) 透射电子显微镜-能量色散X射线谱（TEM-EDX）线扫描分析数据 - TEM-EDX线扫描距离 - 线扫描测得的钛（Ti）元素计数 - 线扫描测得的钼（Mo）元素计数 5) 钼（Mo）颗粒与钛基体界面处钼元素成分分布的DICTRA模拟数据 本README文件由张景琪于2023年12月19日生成。 **通用信息** 1. 数据集标题：基于双功能合金设计的超高均匀性、高强高韧3D打印钛合金 2. 作者信息 **A. 通讯作者联系方式** * 姓名：Matthew Dargusch * 机构：昆士兰大学 * 地址：澳大利亚昆士兰州圣卢西亚市昆士兰大学先进工程大楼（49栋）6层 * 邮箱：[e-mail] **B. 第一作者联系方式** * 姓名：张景琪 * 机构：昆士兰大学 * 地址：澳大利亚昆士兰州圣卢西亚市昆士兰大学先进工程大楼（49栋）6层634室 * 邮箱：[e-mail] 3. 数据采集时间（具体日期、范围或近似日期）：2021年至2023年 4. 数据采集地点：澳大利亚昆士兰大学及……