TA15合金在不同温度下的氧化行为  

Oxidation Behavior of TA15 Alloy at Different Temperatures

作　　者：裴秋旭 梁文萍[1] 缪强[1] 任蓓蕾[1] 王昉[1] 贲能军[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京211100

出　　处：《热处理》2015年第4期13-17,共5页Heat Treatment

基　　金：国家自然科学基金面上项目(51174119);南京航空航天大学博士学位论文创新与创优基金(BCXJ14-11)

摘　　要：研究了TA15合金在650℃、750℃、800℃和850℃静态空气中的高温氧化行为。采用XRD、SEM、EDS分析了TA15合金表面氧化膜的相组成、显微组织和化学成分。结果表明,在650℃恒温氧化100 h时,TA15合金表面发生微弱的氧化;在750℃氧化100 h时,氧化产物中出现Ti O2和Al2O3;而在800℃氧化100 h和850℃氧化30 h时氧化皮发生剥落,且氧化产物中出现了Ti3Al有害相。随着温度升高,TA15合金氧化增重增加。高温下氧化产物主要是Ti O2和Al2O3,且未形成连续致密的Al2O3氧化膜。随着温度的升高,危害性氧化物增多。The high temperature oxidation behavior of TA15 alloy at 650 ℃, 750 ℃, 800 ℃ and 830 nd m the static air was investigated. The phase composition, microstructure and chemical composition of the surface oxide film of TA15 alloy were investigated by using XRD, SEM and EDS. The results show that the TA15 alloy surface is weakly oxidized when held at 650 ℃ for 100 h, and TiO2 and A1203 occurs in the oxidized products of TA15 alloy when held at 750 ℃ for 100 h, as well as the oxide skin spalls and the harmful TiaA1 phase is founded when held at 800 ℃ for 100 h or at 850 ℃ for 30 h. As the temperature increases the weight of oxidized TA15 alloy increases. The high-temperature oxidized products are mainly TiO2 and AI203 , and no continuous and dense A1203 oxide film is produced. As the temperature becomes higher the harmful oxide grows in quantity.

关 键 词：TA15合金 高温氧化 氧化产物 

分 类 号：TG115.2[金属学及工艺—物理冶金]