Test data for low cycle fatigue - strain control on material U 720 carb at 650 Celsius

As a part of the overall test programme of FP5 HTR-M1 Project, JRC-IET performed a series of uni-axial creep and low-cycle fatigue (LCF) tests on the nickel based superalloy Udimet 720 material with the objective of assessing the effect of a specific HTR operating environment. Tests were performed on as-received, heavily carburized, decarburized, and thermally aged material. The heavily carburized state was achieved by exposure for 1000h at 950 Celsius in a 1.6 bar absolute Argon+2%CH4 atmosphere.

作为欧盟第五框架计划（FP5）HTR-M1项目整体测试计划的组成部分，JRC-IET针对镍基高温合金Udimet 720开展了一系列单轴蠕变与低周疲劳（LCF）试验，旨在评估特定高温堆（HTR）运行环境的影响。本次试验覆盖原始供货态、强渗碳态、脱碳态及热老化态四类材料试样。其中强渗碳态的制备方式为：将试样置于1.6巴绝对压力的氩气+2%甲烷气氛中，在950摄氏度下持续暴露1000小时。