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本文利用内耗测量,配合晶界附近区域的微区Auger电子能谱分析,X射线相结构分析。合金组织的观察及相应力学性能的测定,研究一种钴基高温合金中碳的弛豫内耗峰。钴基高温合金经锻造成直径20mm试棒。冷拔成直径0.9mm细丝,均经石英管真空(4Pa)封接后在普通电炉内进行。1170℃,0.5h固溶处理和760℃的时效处理。合金成分列于表1,两种材料主要在La含量上有所差别。在高温、高真空(4×10~(-3)Pa)、低频(～1
In this paper, the internal energy measurement, with the vicinity of the grain boundary Auger electron spectroscopy analysis, X-ray phase structure analysis. The observation of the alloy structure and the determination of the corresponding mechanical properties, the study of a cobalt-based superalloy carbon relaxation peak. Cobalt-based superalloy forged into a diameter of 20mm test bar. Cold drawn into 0.9mm diameter filaments, both by quartz tube vacuum (4Pa) sealed in an ordinary electric furnace. 1170 ℃, 0.5h solution treatment and aging treatment at 760 ℃. The composition of the alloys is given in Table 1. The two materials differ mainly in La content. At high temperature, high vacuum (4 × 10 ~ (-3) Pa), low frequency (~ 1