2024年5月1日 · In this study, the matrix grain morphology, dispersion morphology, and phases of oxide particles in eight ODS steels were studied by scanning transmission electron microscopy (STEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM).

2014年1月1日 · The nanoparticles in an Al-alloyed high-Cr oxide dispersion strengthened (ODS) steel with Zr addition, i.e., SOC-14 (Fe–15Cr–2W–0.1Ti–4Al–0.63Zr–0.35Y 2 O 3), have been examined by transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM).

2011年10月23日 · In this study, we systematically characterized the atomic structure and chemistry of the nanoclusters in an ODS steel using the newly developed state-of-the-art Cs-corrected TEM and scanning...

Oxide dispersion strengthened (ODS) austenitic steels are promising candidate materials for SCWR, which combine the advantages of both austenitic stainless steels and ODS steels. In this work, ODS-316 austenitic steel (316L+0.35%Y 2 O 3 +0.3%Ti, mass fraction) was fabricated by the process of mechanical alloying (MA) and hot isostatic pressing ...

2020年1月1日 · In order to study the evolution of the nano oxide particles, the irradiated samples were examined using transmission electron microscopy (TEM). A drastic reduction in particle size along with an increase in particle density was observed in the Fe–14Cr-0.2Ti-0.3Y 2 O 3 alloy irradiated up to 40 dpa at 700 °C as compared to 600 °C.

2016年7月11日 · The oxide nanoparticles present in three oxide-dispersion-strengthened (ODS) Fe–12Cr–5Al alloys containing additions of (1) Y2O3 (125Y), (2) Y2O3 + ZrO2 (125YZ), and (3) Y2O3 + HfO2 (125YH), were investigated using transmission and …

Oxide dispersion strengthened (ODS) steels are the leading candidate structural materials for fast reactor and fusion reactor application due to excellent radiation tolerance and high temperature creep strength. High number density nanoscale oxides play a …

利用高能同步辐射小角X射线散射 (SAXS), 配合高分辨透射电镜 (HRTEM), 高角环形暗场 (HAADF)像和电子背散射衍射 (EBSD)研究了不同球磨时间合金粉制备的9Cr-ODS钢中纳米析出相的特征及其对组织和性能的影响. SAXS和TEM实验结果表明, 9Cr-ODS钢中富Y-Ti-O纳米团簇的尺寸随着球磨时间的延长不断下降, 分布密度峰值逐渐升高, 球磨20 h样品中富Y-Ti-O纳米团簇的分布密度峰值达到2.93×10 23 m -3; 烧绿石结构Y 2 Ti 2 O 7 相的分布密度峰值在球磨8 h样品中最 …

1 天前 · In recent years, oxide dispersion-strengthened (ODS) copper alloys have received extensive attention. ... According to the SEM and TEM characterization results above, Al 2 O 3 particles in the alloy have dual scales. One is coarse submicron-sized, and the other is nano-sized. For Orowan strengthening, the effect of nano-scale particles is much ...

氧化物弥散强化(ods)合金，具有优异的抗蠕变性能、良好的高温组织稳定性和良好的抗辐照性能，是一类重要的高温应用合金。 然而， 由于氧化物颗粒容易在金属基体晶界处聚集，其对金属基体力学性能的改善效果有限，这…