Dataset for "Load-partitioning in an Oxide Dispersion-strengthened 310 Steel at Elevated Temperatures"

Here the high temperature tensile performance of an oxide dispersion-strengthened (ODS) 310 steel is reported upon. The microstructure of the steel was examined through both transmission electron microscopy (TEM) and synchrotron scattering. In situ synchrotron X-ray tensile investigation was performed at a variety of temperatures, from room temperature up to 800 ◦C. Pyrochlore structure yttrium titanate and sodium chloride structure titanium nitride phases were identified in the steel along with an austenite matrix and marginal residual a -martensite. The inclusion phases strengthen the steel by taking extra load through particle-dislocation interaction during plastic deformation or dislocation creep procedures. As temperature rises, lattice strain measurement implies that the load partitioning effect of conventional precipitate phases starts to diminish, whereas those ultra-fine oxygen-enriched nanoparticles continue to maintain a considerable amount of extra lattice strain. Introduction of oxygen-enriched nanoparticles in austenitic steel is shown to improve the high temperature performance, making austenitic ODS steels promising for advanced nuclear applications.本文报道了氧化物弥散强化（oxide dispersion-strengthened, ODS）310钢的高温拉伸性能。采用透射电子显微镜（transmission electron microscopy, TEM）与同步辐射散射对该钢的微观组织进行了表征分析。在室温至800℃的多个温度区间开展了原位同步辐射X射线拉伸试验。在该钢中鉴定出烧绿石结构钛酸钇相、氯化钠结构氮化钛相，以及奥氏体基体与少量残余α马氏体。这些夹杂物相通过在塑性变形或位错蠕变过程中产生颗粒-位错交互作用以承载额外载荷，从而实现钢材强化。随着温度升高，晶格应变测试结果表明，传统析出相的载荷分配效应逐渐减弱，而超细富氧纳米颗粒仍能维持可观的额外晶格应变。研究表明，在奥氏体钢中引入富氧纳米颗粒可提升其高温性能，使得奥氏体氧化物弥散强化钢在先进核应用领域具有良好的应用前景。

搜集汇总

背景与挑战

背景概述

该数据集聚焦于氧化物弥散强化310钢在高温下的性能，通过原位同步辐射X射线拉伸实验和微观结构分析，揭示了钢中富氧纳米颗粒在高温下仍能保持显著载荷分配效应，从而提升材料的高温性能，适用于先进核应用领域。数据集包含实验数据、微观结构信息和高温力学行为分析，旨在支持材料科学和核工程研究。