Test data for uniaxial creep on material ALLOY 800H at 850 Celsius and a stress of 15.27 MPa

The creep rupture data in this collection were determined for the high temperature reactor projects (the direct cycle helium turbine project, the nuclear process heat project and the district heating project) of the Federal Republic of Germany and the State of North Rhine Westphalia, the aim being to qualify the candidate constructional alloys for service at temperatures up to 950°C. Several batches of each alloy were investigated and special attention was given to the effects of the service environments (helium containing different impurity gases, such as hydrogen, water vapour, carbon monoxide and methane, all at microbar levels, and methane reforming gas mixture) on the properties. In the test machines, these test environments led to carburisation of test pieces. However, analysis of the data showed that the stress rupture data for tests in air, in impure helium and in methane reforming gas lay in the same scatterband at each temperatures tested.

The data were used for the formulation of draft nuclear design rules for the high temperature reactor systems, which are summarised in 'Proceedings of the Workshop on Structural Design Criteria for HTR', G Breitbach, F Schubert, H Nickel, Jül-Conf-71, April 1989, Berichte der Kernforschungsanlage Jülich GmbH, ISSN 0344-5798.

本数据集收录的蠕变断裂数据，均针对联邦德国与北莱茵-威斯特伐利亚州的高温反应堆项目（含直接循环氦气涡轮机项目、核工艺热项目及区域供热项目）测得，旨在验证候选结构合金在最高950℃工况下的服役适用性。研究针对每种合金开展了多炉批次的试验，并重点考察了服役环境对合金性能的影响：试验环境包括含氢、水蒸气、一氧化碳及甲烷等微巴级杂质气体的氦气环境，以及甲烷重整混合气体环境。在试验装置中，上述环境会导致试样发生渗碳现象。然而数据分析表明，在各试验温度下，空气、含杂质氦气及甲烷重整气体环境中测得的应力断裂数据，均处于同一离散带内。
本数据集的数据被用于制定高温反应堆（High Temperature Reactor, HTR）系统的核设计规范草案，相关内容汇总于《高温反应堆结构设计准则研讨会论文集》（Proceedings of the Workshop on Structural Design Criteria for HTR），作者为G Breitbach、F Schubert、H Nickel，会议编号Jül-Conf-71，发布于1989年4月，刊载于《于利希核研究中心报告》（Berichte der Kernforschungsanlage Jülich GmbH），国际标准刊号ISSN 0344-5798。