| ZSGH4169榫连接结构微动疲劳试验 |
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| 引用本文： | 邢泽宇,张宏建,于子强,崔宝龙,温卫东.ZSGH4169榫连接结构微动疲劳试验[J].航空动力学报,2021,36(11):2410-2417. |
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| 作者姓名： | 邢泽宇 张宏建 于子强 崔宝龙 温卫东 |
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| 作者单位： | 南京航空航天大学能源与动力学院,南京210016 |
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| 基金项目： | 国家自然科学基金（91860111）； 国家科技重大专项（2017-Ⅳ-0012-0049） |
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| 摘 要： | 针对航空发动机热端部件涡轮盘榫连接结构微动疲劳现象展开研究，开展了ZSGH4169镍基高温合金榫连接结构在不同温度和不同载荷下的微动疲劳试验。试验发现:在不同工况下，微动疲劳裂纹均产生在榫槽接触区的下缘，且两侧均有裂纹产生。榫连接结构微动疲劳寿命随着试验温度的升高，微动疲劳寿命显著降低；随着载荷的增加，微动疲劳寿命显著降低。温度和载荷都会对滑移幅值产生影响，且微动疲劳寿命随着滑移幅值的增加而降低。使用包含微动疲劳参数的高温微动疲劳寿命预测模型来对ZSGH4169微动疲劳试验进行验证，预测寿命均在2倍误差带内。
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| 关 键 词： | 榫连接结构 镍基高温合金 微动疲劳 滑移幅值 寿命预测 |
| 收稿时间： | 2020/11/26 0:00:00 |
Fretting fatigue test of ZSGH4169 dovetail structure |
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| XING Zeyu,ZHANG Hongjian,YU Ziqiang,CUI Baolong,WEN Weidong.Fretting fatigue test of ZSGH4169 dovetail structure[J].Journal of Aerospace Power,2021,36(11):2410-2417. |
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| Authors: | XING Zeyu ZHANG Hongjian YU Ziqiang CUI Baolong WEN Weidong |
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| Institution: | College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China |
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| Abstract: | The fretting fatigue of ZSGH4169 Nickel-based superalloy dovetail structure was studied under different temperatures and loads.It was found that under different working conditions，the fretting fatigue cracks were generated at the lower edge of the mortise contact area，and cracks were generated on both sides.The fretting fatigue life of dovetail structure decreased significantly with the increase of test temperature and load.Both temperature and load affected the slip amplitude and the fretting fatigue life decreased with the increase of slip amplitude.The high-temperature fretting fatigue life prediction model containing fretting fatigue parameters was used to verify the fretting fatigue test of ZSGH4169，and the predicted life was within the double error band. |
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| Keywords: | dovetail structure nickel-based superalloy fretting fatigue slip amplitude life predicting |
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