Test data for uniaxial creep on material CM 247 ds lc carb at 850 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.

作为第五框架计划（FP5）HTR-M1项目整体测试计划的一部分，欧盟联合研究中心能源与运输研究所（JRC-IET）针对镍基高温合金Udimet 720开展了一系列单轴蠕变（uni-axial creep）与低周疲劳（low-cycle fatigue, LCF）测试，旨在评估特定高温气冷堆（High Temperature Reactor, HTR）运行环境的影响。本次测试的样品涵盖原始供货态、严重渗碳态、脱碳态以及热老化态四类材料。其中严重渗碳态的制备方式为：在1.6巴绝对压力的氩气+2%甲烷混合气氛中，于950摄氏度下暴露1000小时。