| TA15钛合金高温氧化行为 |
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| 引用本文： | 王琪,文智,易丹青,王斌,王福晶,肖东东,陈振湘.TA15钛合金高温氧化行为[J].粉末冶金材料科学与工程,2012(5):571-578. |
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| 作者姓名： | 王琪 文智 易丹青 王斌 王福晶 肖东东 陈振湘 |
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| 作者单位： | 中南大学材料科学与工程学院 |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目(2011AA030101) |
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| 摘 要： | 研究TA15钛合金在750~950℃,空气中氧化1~150 h的氧化动力学规律,采用SEM、XRD及EPMA测试技术分析该合金氧化层的显微组织形貌、相组成和复合结构,并对氧化膜的生成机理进行探讨。结果表明:合金在750、850和950℃温度下的氧化行为均符合抛物线规律,但在950℃以上随氧化温度的升高和保温时间的延长,氧化质量增加值持续升高,并远大于750℃和850℃时的氧化质量增加。750℃和850℃下氧化150 h后,合金氧化层结构为TiO2/Al2O3/TiO2/基体;950℃下氧化150 h后合金的氧化层结构为TiO2/Al2O3/TiO2/Al2O3/TiO2/Ti3Al/基体。
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| 关 键 词： | 钛合金 高温氧化 氧化层 扩散 |
Oxidation behaviors of TA15 titanium alloy |
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| WANG Qi,WEN zhi,YI Dan-qing,WANG Bin,WANG Fu-jing,XIAO Dong-dong,CHEN Zhen-xiang.Oxidation behaviors of TA15 titanium alloy[J].materials science and engineering of powder metallurgy,2012(5):571-578. |
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| Authors: | WANG Qi WEN zhi YI Dan-qing WANG Bin WANG Fu-jing XIAO Dong-dong CHEN Zhen-xiang |
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| Affiliation: | (School of Material Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | The oxidation kinetics of TA15 alloy including mass gain vs time and temperature have been studied in the condition of 750~950 ℃,1~150 h,in air atmosphere.The changes of substrate and oxidized surface layer of the alloy were examined by means of SEM,X-ray diffraction and EPMA.The oxidation mechanism has also been explored.The results show that the alloy oxidation behavior obeys parabolical law at 750~950 ℃.The mass gain at 950 ℃ increases with increasing oxidation temperature and holding time,and it is much higher than that of at 750 oC and 850 ℃.The oxidation layer formed at 750 ℃ and 850 ℃ for 150 h consists of TiO2/Al2O3/TiO2,ranging from the surface to the substrate.The oxidation results at 950 ℃ for 150 h indicate that the composition of oxidation layer is TiO2/Al2O3/TiO2/ Al2O3/ TiO2/ Ti3Al/substrate. |
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| Keywords: | titanium alloy high temperature oxidation oxidized layer diffusion |
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