Test data for uniaxial creep on material ALLOY 800H at 900 Celsius and a stress of 12.25 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，源自德意志联邦共和国与北莱茵-威斯特法伦州的高温反应堆项目（包括直接循环氦气涡轮项目、核工艺热项目及区域供热项目），旨在验证候选结构合金在最高950°C服役温度下的适用性。研究涵盖了每种合金的多批次试样，并重点考察了服役环境（含氢、水蒸气、一氧化碳、甲烷等微量杂质气体的氦气，杂质浓度均为微巴级；以及甲烷重整气体混合物）对合金性能的影响。在试验机中，这些测试环境导致试样发生渗碳。然而，数据分析表明，在空气、含杂质氦气及甲烷重整气体中获得的应力断裂数据，在各测试温度下均处于同一分散带内。

该数据被用于制定高温反应堆系统的核设计规则草案，相关内容总结于《高温反应堆结构设计准则研讨会论文集》（G Breitbach、F Schubert、H Nickel编著，Jül-Conf-71，1989年4月，于利希核研究中心报告，ISSN 0344-5798）。