Test data for uniaxial creep on material ALLOY 800H irr at 850 Celsius and a stress of 35 MPa (second repeat test)

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，源于德意志联邦共和国（联邦德国）与北莱茵-威斯特伐利亚州的高温反应堆项目，包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，其研究目标为评定候选结构合金在最高950℃服役条件下的适配资格。本次测试针对每种合金开展了多批次试验，并重点考察了服役环境对合金性能的影响，涉及的服役环境包括含微量（微巴级）氢、水蒸气、一氧化碳、甲烷等杂质气体的氦气，以及甲烷重整混合气。测试过程中，上述环境会导致试样发生渗碳。但数据分析结果显示，在各测试温度下，空气、不纯氦气及甲烷重整气环境下的应力断裂数据均处于同一离散带内。

本数据集被用于制定高温反应堆系统的核设计规范草案，相关内容汇总于《高温反应堆（High Temperature Reactor, HTR）结构设计准则研讨会论文集》，作者为G Breitbach、F Schubert、H Nickel，会议编号Jül-Conf-71，发布于1989年4月，收录于《Berichte der Kernforschungsanlage Jülich GmbH》，国际标准刊号ISSN 0344-5798。