Using the method of directional solidification to prepare T91 steel is an effective way to reduce the elastic modulus and improve the thermal fatigue properties of alloy. In this paper, T91...

2024年11月1日 · XRD results indicate the presence of Fe, Cr, and Mn-rich oxide phases in both specimens, which is consistent with the EDS results. To better assess the chemical composition of the oxide film, the complete XPS spectrum of the T91-M specimen after oxidation is shown in Fig. 7 a. It can be found that the surface of T91 steel primarily comprises ...

Figure 1 shows the XRD pattern of T91 sample. Cr is solute solution into iron, thus the result confirmed that the samples are in single phase of -Fe solid solution. ... The formation of an...

2022年8月1日 · The oxide films formed on T91 steels were analyzed by scanning electron microscopy (SEM), electron probe microanalysis (EPMA), electron backscattered diffraction (EBSD), X-ray diffraction (XRD) and transmission electron microscope (TEM). The corrosion mechanism of T91 steels in high temperature liquid LBE is also discussed.

2024年3月1日 · Fig. 3 shows the XRD diffraction patterns of T91 and SIMP steels corroded in static LBE at 600 °C. It can be seen that the diffraction peaks of matrix Fe–Cr, chromium oxide (Cr 2 O 3), and PbBi 12 O 19 were easily detected on the surface of T91 and SIMP steels with the Cr

Download scientific diagram | XRD spectrum image for T91 steel and chromizing steel in low and high temperature. from publication: The Effect of Temperature on the Chromizing Process for...

研究了T91钢在600,650和700 ℃10％KCl+10%K 2 SO 4 +80%Na 2 SO 4 (质量分数) 混合熔融盐中的热腐蚀行为。 采用XRD,SEM /EDS对腐蚀产物膜相组成和形貌进行了分析。 结果表明,T91钢在腐蚀过程中均表现为失重,特别是在650和700 ℃下失重尤为严重。 600 ℃下的腐蚀产物膜主要由Fe 3 O 4 组成;而650和700 ℃下的腐蚀产物膜基本剥落殆尽,EDS分析表明残留的腐蚀产物中S含量较高,这导致腐蚀产物严重剥落。 熔盐中Cl可与Cr 2 O 3 反应生成挥发性的CrO 2 Cl 2,导致腐蚀 …

摘要 对国产T91及316Ti钢进行室温下200keV的Xe^+离子辐照,使用X射线衍射(XRD)、透射电镜(TEM)等检测方法研究不同损伤剂量下辐照对材料相的稳定性和微观结构变化的影响。研究结果表明:T91钢辐照后未发生明显...

采用XRD，SEM及EDS及显微硬度对原始态和服役1×105h的191／. TP347H异种钢焊接接头的相组成、显微组织形貌和元素组成进行了表征分析，并采用显微硬度计对2种接头的显微硬度进行了测 试。 结果表明，相较于原始态，服役1X105h的接头TP347H母材晶粒更为粗大，T91和TP347H的热影响区强化相粗化，焊缝有 M∞c。 和Nb(C，N)析出。 2种状态的焊接接头硬度最高值均出现在191侧热影响区，最低值均在TP347H母材，服役1×105h的焊接. 接头焊缝的硬度 …

2017年8月29日 · In this work, the high-temperature oxidation behavior of SIMP and commercial T91 steels was investigated in air at 800 °C for up to 1008 h. The oxides formed on the two steels were characterized and analyzed by XRD, SEM and EPMA.