合金材料高低周复合疲劳寿命研究

刘红彬; 黄维娜; 陈伟

doi:10.13224/j.cnki.jasp.2014.01.010

合金材料高低周复合疲劳寿命研究

doi: 10.13224/j.cnki.jasp.2014.01.010

1.
南京航空航天大学能源与动力学院, 南京 210016
2.
中国航空工业集团公司中国燃气涡轮研究院, 成都 610500

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出版历程
- 收稿日期: 2012-11-30
- 刊出日期: 2014-01-28

Investigation on high cycle fatigue-low cycle fatigue life of alloy material

1.
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2.
China Gas Turbine Establishment, Aviation Industry Corporation of China, Chengdu 610500, China

摘要

摘要: 就外物损伤对钛合金材料（TC4和TC11）高低周复合疲劳寿命的影响进行了试验研究[D].分别采用摆锤法和空气炮法模拟了叶片外物损伤，对比分析了两类损伤缺口的特征.进行了无损伤试样、损伤试样的疲劳试验，对比分析了外物损伤对钛合金疲劳寿命的影响.结果表明：摆锤冲击试验法模拟的损伤缺乏代表性，空气炮发射弹丸法模拟的损伤更接近真实情况；外物损伤导致钛合金高低周复合疲劳寿命严重下降，空气炮发射弹丸法模拟的损伤使钛合金的疲劳寿命从10⁵下降到10⁴量级.
- 合金材料 /
- 高低周复合疲劳 /
- 外物损伤 /
- 裂纹萌生 /
- 试验
Abstract: The effects of high cycle fatigue-low fatigue life(HCF-LCF) on titanium alloy (TC4 and TC11) were researched experimentally with foreign object damage (FOD) simulation through pendulum method and air-gas gun method and the features of these two different damage notches were analyzed and compared. Fatigue tests on nondestructive and destructive specimens were further conducted to analyze and compare the effects of FOD on the titanium alloy fatigue life.The conclusions show that:pendulum impact test method simulation lacks of representativeness, while air-gas gun projectile method simulation is much closer to the truth; FOD leads to severe decline of HCF-LCF life of titanium alloy, and air-gas gun projectile method simulation decreases the titanium alloy fatigue life from 10⁵ to 10⁴ order of magnitude.
- alloy material /
- high cycle fatigue-low cycle fatigue (HCF-LCF) /
- foreign object damage (FOD) /
- crack initiation /
- experiment

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参考文献(15)

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