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| 显微组织对TA15合金高温拉伸性能的影响 | |
| 引用本文： | 贺飞,陈海峰,王玉会.显微组织对TA15合金高温拉伸性能的影响[J].材料工程,2012(2):13-15,19. |
| 作者姓名： | 贺飞 陈海峰 王玉会 |
| 作者单位： | 1. 沈阳飞机设计研究所,沈阳,110035 2. 中国人民解放军驻沈阳飞机工业(集团)有限公司军事代表室,沈阳,110850 3. 北京航空材料研究院,北京,100095 |
| 基金项目： | 国家973计划资助项目 |
| 摘 要： | 研究了显微组织变化对TA15合金500℃高温拉伸性能的影响。结果表明:初生α相含量增加、α相方向性增强、次生α片变厚及β晶粒尺寸变粗大等显微组织的变化,可使TA15合金500℃高温抗拉强度降低,最大降幅达90MPa以上。研究表明,随初生α相含量增加,增多了晶界数量,而随温度升高晶界强度比晶粒强度下降快,导致高温抗拉强度随初生α相含量增加而降低。 |
| 关 键 词： | TA15钛合金 高温拉伸性能 显微组织 α相含量及形貌 β晶粒尺寸 |
Effect of Microstructure on High Temperature Tensile Properties of TA15 Titanium Alloy |
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| HE Fei , CHEN Hai-feng , WANG Yu-hui.Effect of Microstructure on High Temperature Tensile Properties of TA15 Titanium Alloy[J].Journal of Materials Engineering,2012(2):13-15,19. | |
| Authors: | HE Fei CHEN Hai-feng WANG Yu-hui |
| Affiliation: | 1 Shenyang Aircraft Design & Research Institute,Shenyang 110035,China; 2 PLA Military Representative Office in Shenyang Aircraft Industries (Group) Co.,Ltd.,Shenyang 110850,China;3 Beijing Institute of Aeronautical Materials,Beijing 100095,China) |
| Abstract: | The effect of microstructure on the high tensile properties at 500℃ of TA15 titanium alloy was studied.The results show that the increase of primary α phase content,the strengthening of α phase directional,the thickening of secondary α lamellae or the increase of β grain size can reduce the high temperature tensile at 500℃ of TA15 titanium alloy.The largest decrease of high temperature tensile is more than 90MPa by changing the microstructure.The analyses show that the number of grain boundaries is increasing with primary α phase content,and the descent speed of grain boundary strength is faster than that of the grain with the increase of temperature,resulting in the decrease of high temperature tensile. |
| Keywords: | TA15 titanium alloy high temperature tensile property microstructure α-phase content and morphology β grain size |
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