测定了Fe3Al基合金的静态和拉应力态下的氧化增重曲线,并与0Cr25Al5合金进行比较.结果表明,在较低温度下,Fe3Al基合金的静态氧化性能不如0Cr25Al5;当温度高于900℃时,Fe3Al基合金的氧化性能要比0Cr25Al5好.但Fe3Al基合金在拉应力作用下的动态氧化性能比0Cr25Al5差.动态下合金的氧化增重不仅温度和氧化时间有关,还与拉应力的大小有关.文中给出了近似的动态氧化议程:△w=k1t3/2+k2t1/2.
Mass gain curves of Fe3Al-based alloys oxidized in static state or under external tensile stress were studied and compared with those of 0Cr25Al5. It was observed that the static oxidation resistance of Fe3Al-based alloys was similar to that of 0Cr25Al5 at olw temperature, but better than 0Cr25Al5 above 900℃;and dynamic oxidation resistance of Fe3Al-based alloys was a little worse than that of 0Cr25Al5. Mass gain of alloys was not only dependent on temperature and oxidization time, but also on external tensile stress. A dynamic oxidation equation, △w=k1t3/2+k2t1/2, was concluded, and was in accordance with the experimental results.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%