Ungureanu Arva Elisabeta Roxana, Negrea Denis Aurelian, Galatanu Andrei, Galatanu Magdalena, Moga Sorin Georgian, Anghel Daniel-Constantin, Branzei Mihai, Stoica Livia, Jinga Alexandra Ion, Petrescu Mircea Ionut, Munteanu Corneliu, Abrudeanu Marioara
Doctoral School of Material Science and Engineering, National University of Science and Technology Politehnica Bucharest, Splaiul Independenţei Nr. 313, Sector 6, 060042 Bucharest, Romania.
Nuclear Fuel Plant, Campului Street, Nr. 1, 115400 Mioveni, Romania.
Materials (Basel). 2024 May 10;17(10):2262. doi: 10.3390/ma17102262.
The precipitation-hardenable nickel-based superalloy Rene 41 exhibits remarkable mechanical characteristics and high corrosion resistance at high temperatures, properties that allow it to be used in high-end applications. This research paper presents findings on the influence of thermal shocks on its microstructure, hardness, and thermal diffusivity at temperatures between 700 and 1000 °C. Solar energy was used for cyclic thermal shock tests. The samples were characterized using microhardness measurements, optical microscopic analysis, scanning electron microscopy coupled with EDS elemental chemical analysis, X-ray diffraction, and flash thermal diffusivity measurements. Structural transformations and the variation of properties were observed with an increase in the number of shocks applied at the same temperature and with temperature variation for the same number of thermal shocks.
沉淀硬化型镍基高温合金Rene 41在高温下具有卓越的力学性能和高耐腐蚀性，这些特性使其能够应用于高端领域。本研究论文展示了在700至1000°C温度范围内热冲击对其微观结构、硬度和热扩散率影响的研究结果。采用太阳能进行循环热冲击试验。通过显微硬度测量、光学显微镜分析、扫描电子显微镜结合能谱元素化学分析、X射线衍射以及闪光热扩散率测量对样品进行表征。观察到在相同温度下随着冲击次数的增加以及在相同热冲击次数下随着温度变化，结构转变和性能变化情况。
