Test data for creep crack growth on material ALLOY 800H at 750 Celsius and a load of 4330 N

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（creep rupture data），是为德意志联邦共和国及北莱茵-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、核工艺供热项目与区域供暖项目）测定所得，旨在为最高服役温度达950℃的候选结构合金完成服役资质评定。研究对每种合金的多个批次开展了测试，并重点关注服役环境对合金性能的影响：所考察的服役环境包括含有氢、水蒸气、一氧化碳、甲烷等微量（微巴级别）杂质气体的氦气，以及甲烷重整混合气体。在试验装置中，上述试验环境会引发试样渗碳（carburisation）现象。但数据分析结果表明，在各测试温度下，空气、不纯氦气与甲烷重整气体环境下的应力断裂（stress rupture）数据均处于同一离散带内。

本数据集所收录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，相关内容总结于"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，发表于1989年4月，收录于《于利希核研究中心报告》（Berichte der Kernforschungsanlage Jülich GmbH），国际标准刊号ISSN 0344-5798。