γ-TiAl合金在700 ℃空气中的长时高温氧化行为和组织演变
周志春, 刘仁慈, 张建达, 杨超, 崔玉友, 杨锐

Long-Term Oxidation Behavior and Microstructural Evolution of γ-TiAl Alloys at 700 oC in Air
ZHOU Zhichun, LIU Renci, ZHANG Jianda, YANG Chao, CUI Yuyou, YANG Rui
表1 45XD和4822合金氧化动力学曲线分段和平均氧化增重速率
Table 1 Stages of oxidation kinetics curves and average mass gain rates of 45XD and 4822 alloys
AlloyStage

Time

h

Average mass gain rate

mg·cm-2·h-1

45XDⅠ0-501.86 × 10-3
Ⅱ50-1005.77 × 10-4
Ⅲ100-5009.66 × 10-4
Ⅳ500-20006.42 × 10-4
4822Ⅰ0-304.54 × 10-3
Ⅱ30-1009.09 × 10-4
Ⅲ100-4002.37 × 10-3
Ⅳ400-20006.91 × 10-4