| Ti-Al-Mo合金的时效析出行为 |
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| 引用本文： | 李倩,葛鹏,赵永庆,王敏,周伟. Ti-Al-Mo合金的时效析出行为[J]. 钛工业进展, 2013, 0(5): 18-21 |
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| 作者姓名： | 李倩 葛鹏 赵永庆 王敏 周伟 |
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| 作者单位： | 1. 西北有色金属研究院,陕西 西安,710016
2. 西北工业大学,陕西 西安,710072 |
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| 基金项目： | 国家“973”计划项目 |
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| 摘 要： | 研究了一种新型Ti-Al-Mo近β型钛合金在900℃×30 min/WQ固溶处理后,在不同条件时效处理后的析出相、显微硬度及力学性能。研究结果表明,在500℃时效4 h后的合金显微维氏硬度最高,为4 273 MPa;时效温度在400~700℃范围内时,随着时效温度的升高,析出的片层状α相尺寸逐渐增大,体积分数先增加后降低。由于加入了β稳定元素Mo,能提高强度但也会降低塑性,为了获得较好的强塑性匹配,在时效时间一定的前提下,时效温度应选取500℃左右;而为了得到较高的塑性和断裂韧性,在600~700℃之间时效较为适宜。
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| 关 键 词： | Ti-Al-Mo合金 时效处理 维氏硬度 力学性能 |
Aging Precipitate of Ti-Al-Mo Alloy |
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| Li Qian , Ge Peng , Zhao Yongqing , Wang Min , Zhou Wei. Aging Precipitate of Ti-Al-Mo Alloy[J]. , 2013, 0(5): 18-21 |
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| Authors: | Li Qian Ge Peng Zhao Yongqing Wang Min Zhou Wei |
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| Affiliation: | 1. Northwest Institute for Nonferrous Metal Research, Xi＇ an 710016, China) (2. Northwesten Polytechnical University, Xi＇ an 710072, China) |
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| Abstract: | A new type beta titanium alloy Ti-Al-Mo was solution treated at 900℃ for 30 min with water quenching then aged under different conditions. The aging precipitate, Vickers hardness and mechanical properties of Ti-Al-Mo alloy under different heat treatment conditions were studied. The results show that, Vicker hardness is 4 273 MPa aged at 500℃ for 4 h; when the range of aging temperature is 400℃ to 700℃, the size of lamellar-type a is larger and the volume fraction increases first then decreases with the aging temperature improving; usually the β stable elements Mo can increase the intensity, and can decrease the toughness at the same time. At the same aging time, excellent strength/plasticity properties can be achieved by 500℃ aging treatment; higher plasticity and fracture toughness can be achieved by 600 ℃ to 700 ℃ aging treatment. |
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| Keywords: | Ti-Al-Mo alloy aging treatment Vickers hardness mechanical properties |
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