High cycle fatigue test data for IN 718 material at 20 °C

The FP7 project "In Space Propulsion 1" was set up to improve the fundamental knowledge and the techniques which are necessary to allow Europe to implement new ambitious space programs involving cryogenic propulsion. It concentrates on liquid oxygen, liquid hydrogen, and liquid methane propellants, and the anticipated progress will address - LOX methane combustion - heat and propellant management - materials tribology, compatibility, and hydrogen embrittlement. The data included here were generated in the part of the project relating to hydrogen embrittlement. In a frist step, materials of interest were screened through a literature research and by carrying out tensile tests in gaseous hydrogen (GH2) and Ar. Finally, two alloys (Inconel 718 and A-286) were selected as being the most interesting for the actual test campaign. For these two materials the influence of hydrogen on the fatigue behaviour in High Cycle Fatigue (HCF) tests was studied in high pressure GH2 and Argon.

第七框架计划（FP7）项目“太空推进1号（In Space Propulsion 1）”旨在夯实基础理论与核心技术，支撑欧洲开展涉及低温推进系统的前瞻性太空计划。该项目聚焦液氧、液氢与液甲烷三类推进剂，预期研究成果将覆盖三大研究方向：液氧（LOX）甲烷燃烧、热与推进剂管理、材料摩擦学、相容性及氢脆。本数据集收录的数据均来自该项目中氢脆相关的研究分支。研究伊始，团队先通过文献调研以及在气态氢（GH2）与氩气（Ar）中开展拉伸试验，对目标材料进行初筛。最终筛选出两种合金——因科内尔718（Inconel 718）与A-286，作为后续正式测试的核心研究对象。针对这两种材料，研究团队分别在高压气态氢与氩气环境中开展高周疲劳（High Cycle Fatigue, HCF）试验，探究氢对其疲劳性能的影响。