Test data for uniaxial creep on material IN792 ds 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.

作为欧盟第五框架计划（FP5）高温气冷堆（High Temperature Reactor, HTR）-M1项目整体测试计划的组成部分，欧盟联合研究中心-能源与运输研究所（Joint Research Centre - Institute for Energy and Transport, 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（low-cycle fatigue, LCF）试验，旨在评估特定高温气冷堆运行环境对材料性能的影响。试验分别针对供货态、严重渗碳态、脱碳态及热老化态的该合金材料开展。其中严重渗碳态试样通过将材料置于1.6巴绝对压力的氩气与2%甲烷混合气氛中，在950摄氏度下保温1000小时制得。