| 激光冲击、喷丸及其复合强化对TB6钛合金表面完整性及轴向疲劳性能的影响 |
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| 引用本文： | 罗学昆,赵春玲,查小辉,王欣,宋颖刚,汤智慧. 激光冲击、喷丸及其复合强化对TB6钛合金表面完整性及轴向疲劳性能的影响[J]. 科技导报(北京), 2021, 39(9): 48-55. DOI: 10.3981/j.issn.1000-7857.2021.09.005 |
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| 作者姓名： | 罗学昆 赵春玲 查小辉 王欣 宋颖刚 汤智慧 |
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| 作者单位： | 中国航发北京航空材料研究院航空材料先进腐蚀与防护航发重点实验室,北京100095;中国航发湖南动力机械研究所,株洲412002 |
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| 基金项目： | 国家科技重大专项（2017-VII-0001-0094和J2019-VII7-0015）；中国航发自主创新专项（CXPT-2018-029） |
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| 摘 要： | 为了提升TB6钛合金旋翼的疲劳性能,研究了喷丸、激光冲击及两者的复合工艺等3种表面强化方法对钛合金表面完整性及高周疲劳性能的影响规律.采用白光干涉仪、X射线残余应力测试仪和扫描电子显微镜分别对加工前后试样的表面形貌、表面残余应力分布和微观组织等表面完整性特征参数进行了表征,并采用疲劳试验机分别测试了轴向应力疲劳寿命和疲...
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| 关 键 词： | 激光冲击强化 喷丸 钛合金 疲劳极限 表面完整性 |
| 收稿时间： | 2020-04-29 |
Effect of laser shock peeing,shot peeing and their combination treatment on surface integrity and axial fatigue property of TB6 titanium alloy |
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| LUO Xuekun,ZHAO Chunling,ZHA Xiaohui,WANG Xin,SONG Yinggang,TANG Zhihui. Effect of laser shock peeing,shot peeing and their combination treatment on surface integrity and axial fatigue property of TB6 titanium alloy[J]. Science & Technology Review, 2021, 39(9): 48-55. DOI: 10.3981/j.issn.1000-7857.2021.09.005 |
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| Authors: | LUO Xuekun ZHAO Chunling ZHA Xiaohui WANG Xin SONG Yinggang TANG Zhihui |
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| Affiliation: | 1. Aviation Key Laboratory of Advanced Corrosion and Protection on Aviation Materials, AECC Beijing Institute of Aeronautical Material, Beijing 100095, China;
2. Hunan Aviation Power Machinery Research Institute, Aero Engine Corporation of China, Zhuzhou 412002, China |
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| Abstract: | To improve the fatigue performance of aircraft rotor of TB6 titanium alloy, the effects of laser shock peening (LSP), shot peening (SP) and their combination processing methods on surface integrity and axial fatigue property of the titanium alloy are investigated. The surface topography, residual stress distribution and microstructure are characterized by white light interferometer, X-ray diffraction stress tester and scanning electron microscope. The axial fatigue life and limit are investigated by fatigue tester. Results show that compared with the grinding (GD) specimen under the same test conditions, the fatigue life of LSP specimens is improved by 32.2 times, while the fatigue lifes of SP and the combination processing specimens are both increased by at least 126.4 times. The combination processing method exhibits better improvement for fatigue limit than the SP method. |
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| Keywords: | laser shock peening shot peening titanium fatigue limit surface integrity |
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