| 引用本文: | 孙刚， 陈学明， 马国佳， 马江宁， 崔向中.基体温度对TC11钛合金EB-PVD修复层组织及振动疲劳寿命的影响[J].中国表面工程,2015,28(2):59~64 |
| SUN Gang, CHEN Xueming, MA Guojia, MA Jiangning, CUI Xiangzhong.Effects of Substrate Temperature on Structure and Vibration Fatigue Age of Repairing Layers on TC11 Titanium Alloy Prepared by EB-PVD[J].China Surface Engineering,2015,28(2):59~64 |
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| 摘要: |
| 为了研究温度对修复层性能的影响，采用电子束物理气相沉积(EBPVD)技术在TC11平板试样上制备了修复层，利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)和能谱仪(EDS)研究了不同温度下修复层的成分及组织形貌变化，并通过振动疲劳试验等方法研究了温度对修复层振动疲劳寿命的影响。结果表明：在600~800 ℃进行修复时，修复层为柱状晶组织。修复层的致密性随温度升高而变大，这种变化也会影响修复后试片的振动疲劳性能，修复层柱状晶结构间隙处形成的裂纹源会造成试片疲劳性能的下降。 |
| 关键词: 电子束物理气相沉积（EBPVD） 温度 修复层 振动疲劳寿命 |
| DOI：10.11933/j.issn.1007-9289.2015.02.005 |
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| 基金项目: |
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| Effects of Substrate Temperature on Structure and Vibration Fatigue Age of Repairing Layers on TC11 Titanium Alloy Prepared by EB-PVD |
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SUN Gang, CHEN Xueming, MA Guojia, MA Jiangning, CUI Xiangzhong1,2
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1. Science and Technology on Power Beam Processes Laboratory, Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024;2. Jinjiang State Machine Factory, Chengdu 610043
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| Abstract: |
| TC11 repairing layers was prepared on the TC11 test pieces EBPVD technology at different temperatures to study the influence of temperature. The microstructure was characterized by XRD, SEM and EDS, and the vibration fatigue behavior of the samples at room temperature was tested. Experiment results show that the repairing layers is the columnar crystals at 600800 ℃ in the deposition process. The vibration fatigue age of the repairing layer increases by raising the substrate temperature. The alternation of structure and morphology caused by temperature has great effect on the vibration fatigue performance, however, the crack source exiting in the gap between grain boundary, decrease the vibration fatigue age of the test pieces after repairing. |
| Key words: electron beamphysical vapor deposition (EBPVD) temperature repairing layer vibration fatigue age |
