| Microstructure and mechanical properties of new metastable β type titanium alloy |
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| 引用本文： | 周中波,费跃,赖敏杰,寇宏超,常辉,商国强,朱知寿,李金山,周廉.Microstructure and mechanical properties of new metastable β type titanium alloy[J].中国有色金属学会会刊,2010,20(12):2253-2258. |
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| 作者姓名： | 周中波 费跃 赖敏杰 寇宏超 常辉 商国强 朱知寿 李金山 周廉 |
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| 作者单位： | State Key Laboratory of Solidification Processing,Northwestern Polytechnical University Beijing Institute of Aeronautical Materials |
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| 基金项目： | Project(2007CB613802)supported by the National Basic Research Program of China;Project(KP200912)supported by the Research Fund of the State Key Laboratory of Solidification Processing(NWPU),China |
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| 摘 要： | A new metastable β type titanium alloy called TB-13 with the combination of excellent strength and ductility was developed successfully.In order to develop a perspective on this new alloy,the influence of several commonly used heat treatments on the microstructure and properties was studied.In solution-treated and quenched samples,a low-temperature aging at 480°C results in the precipitation of finerαphase.The precipitation of coarserαphase plate at higher aging temperature(560°C)leads to the increase of tensile ductility but reduction of strength.During low-temperature aging at 300°C,quite homogeneous distribution of fine isothermalωphase particles was found.The isothermalωphase provides nucleation sites forαphase during two-step aging process and makesαphase extremely fine and disperse uniformly in β matrix.Thus,TB-13 alloy is strengthened and its mechanical properties are improved.
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| 关 键 词： | metastable β titanium heat treatment microstructure mechanical property |
| 收稿时间： | 27 November 2009 |
Microstructure and mechanical properties of new metastable β type titanium alloy |
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| Zhong-bo ZHOU, Yue FEI, Min-jie LAI, Hong-chao KOU, Hui CHANG, Guo-qiang SHANG, Zhi-shou ZHU, Jin-shan LI,Lian ZHOU.Microstructure and mechanical properties of new metastable β type titanium alloy[J].Transactions of Nonferrous Metals Society of China,2010,20(12):2253-2258. |
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| Authors: | Zhong-bo ZHOU Yue FEI Min-jie LAI Hong-chao KOU Hui CHANG Guo-qiang SHANG Zhi-shou ZHU Jin-shan LI Lian ZHOU |
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| Affiliation: | a State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;b Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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| Abstract: | A new metastable β type titanium alloy called TB-13 with the combination of excellent strength and ductility was developed successfully. In order to develop a perspective on this new alloy, the influence of several commonly used heat treatments on the microstructure and properties was studied. In solution-treated and quenched samples, a low-temperature aging at 480 °C results in the precipitation of finer α phase. The precipitation of coarser α phase plate at higher aging temperature (560 °C) leads to the increase of tensile ductility but reduction of strength. During low-temperature aging at 300 °C, quite homogeneous distribution of fine isothermal ω phase particles was found. The isothermal α phase provides nucleation sites for α phase during two-step aging process and makes α phase extremely fine and disperse uniformly in β matrix. Thus, TB-13 alloy is strengthened and its mechanical properties are improved. |
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| Keywords: | metastable β titanium heat treatment microstructure mechanical property |
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