Effects of Laser Shock Peening on High-Temperature Fretting Fatigue Life of Titanium Alloy

doi:10.13675/j.cnki.tjjs.190052

Journal of Propulsion Technology ›› 2020, Vol. 41 ›› Issue (4): 903-909.DOI: 10.13675/j.cnki.tjjs.190052

• Structure, Strength and Reliablity • Previous Articles Next Articles

Effects of Laser Shock Peening on High-Temperature Fretting Fatigue Life of Titanium Alloy

1.College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016，China;2.Xi’an Tyrida Optical Electric Technology Co. Ltd.，Xi’an 710077,China

Published:2021-08-15

激光冲击强化对钛合金高温微动疲劳寿命的影响

陈旭¹，崔海涛¹，田增²，张宏建¹，何艳磊²

1.南京航空航天大学能源与动力学院，江苏南京 210016;2.西安天瑞达光电技术股份有限公司，陕西西安 710077

作者简介:陈旭，硕士生，研究领域为结构疲劳与断裂。E-mail：chen_hit@nuaa.edu.cn
基金资助:
国家自然科学基金（91860111）。

Abstract

Abstract: In order to understand the effects of laser shock peening (LSP) on the fretting fatigue life of titanium alloy at high temperature, the fretting fatigue test of TC11 titanium alloy before and after strengthening was carried out at different temperatures and the residual stress and hardness were tested. The results showed that with the increase of temperature, the increased times of fretting fatigue life of TC11 titanium alloy with laser shock peening decreases gradually. When the axial load is 400MPa and the normal load is 65.5MPa, the fretting fatigue life of TC11 titanium alloy specimens strengthened by laser shock peening at room temperature, 300°C and 500°C is 5.5 times, 3.5 times and 1.7 times of that before strengthening, respectively. The residual stress on the surface of the specimens relaxes at high temperature, and the degree of relaxation will increase with the increase of temperature, which is the main reason for the weakening of laser shock peening strengthening effect with the increase of temperature.

Key words: Fretting fatigue;High temperature;Titanium alloy;Residual stress;Hardness

摘要： 为了解高温工作环境下激光冲击强化工艺（LSP）对钛合金材料微动疲劳寿命的影响，开展了强化前后TC11钛合金在室温、300°C和500°C下的微动疲劳试验并测试了试验件表层的残余应力及硬度。结果表明：随着温度的升高，激光冲击强化对TC11钛合金微动疲劳寿命的提高倍数逐渐减小。在轴向载荷为400MPa，法向载荷为65.5MPa时，经激光冲击强化后TC11钛合金试验件在室温、300°C和500°C下的微动疲劳寿命分别为强化前的5.5倍、3.5倍和1.7倍；强化后试验件表层的残余应力会在高温下发生松弛，且松弛程度会随温度的升高而增大，这是激光冲击强化效果随温度升高而逐渐弱化的主要原因。

关键词: 微动疲劳;高温;钛合金;残余应力;硬度

CHEN Xu¹, CUI Hai-tao¹, TIAN Zeng², ZHANG Hong-jian¹, HE Yan-lei². Effects of Laser Shock Peening on High-Temperature Fretting Fatigue Life of Titanium Alloy[J]. Journal of Propulsion Technology, 2020, 41(4): 903-909.

陈旭，崔海涛，田增，张宏建，何艳磊. 激光冲击强化对钛合金高温微动疲劳寿命的影响[J]. 推进技术, 2020, 41(4): 903-909.

References

[1] 周仲荣， VINCENT L. 微动磨损[M]. 北京：科学出版社， 2002.
[2] 刘斌. 圆弧接触面和激光淬火对微动疲劳寿命的影响研究[D]. 南京：南京航空航天大学， 2011.
[3] 刘道新，王振亚，张晓化，等. Ag/Ni多层膜对钛合金微动磨损和微动疲劳抗力的影响[J]. 摩擦学学报， 2010， 30(5): 498-504.
[4] 高玉魁，仲政，雷力明. 激光冲击强化和喷丸强化对FGH97高温合金疲劳性能的影响[J]. 稀有金属材料与工程， 2016， 45(5): 1230-1234.
[5] Luong H， Hill M R. The Effects of Laser Peening and Shot Peening on High Cycle Fatigue in 7050-T7451 Aluminum Alloy[J]. Materials Science and Engineering， 2010， 527(3): 699-707.
[6] Dahotre N B， Harimkar S P. Laser Fabrication and Machining of Materials[M]. US： Springer， 2008.
[7] 李伟，李应红，何卫锋，等. 激光冲击强化技术的发展和应用[J]. 激光与光电子学进展， 2008， 45(12): 15-19.
[8] SánchezSantana， RubioGonzález C， Gomezrosas G ， et al. Wear and Friction of 6061-T6 Aluminum Alloy Treated by Laser Shock Processing[J]. Wear， 2006， 260(7):847-854.
[9] Peyre P， Fabbro R， Merrien P， et al. Laser Shock Processing of Aluminium Alloys. Application to High Cycle Fatigue Behaviour[J]. Materials Science and Engineering， 1996， 210(1-2): 102-113.
[10] 汪诚，赖志林，何卫锋，等. 激光冲击次数对 1Cr11Ni2W2MoV不锈钢高周疲劳性能的影响[J]. 中国激光， 2014， 41(1): 52-57.
[11] Srinivasan S ， Garcia D B ， Gean M C ， et al. Fretting Fatigue of Laser Shock Peened Ti-6Al-4V[J]. Tribology International， 2009， 42(9):1324-1329.
[12] 罗思海，周留成，何卫锋，等. 激光冲击强化对K4030高温疲劳性能影响[J]. 激光与红外， 2014， 44(8): 850-854.
[13] 章海峰，黄舒，盛杰，等. 激光喷丸IN718镍基合金残余应力高温松弛及晶粒演变特征[J]. 中国激光， 2016， 43(2): 100-108.
[14] 石炜，温卫东，崔海涛. 榫连接结构微动疲劳寿命研究[J]. 航空动力学报， 2014， 29(1): 104-110.
[15] 北京航空材料研究所. 航空发动机设计用材料数据手册[M]. 北京:中国航空发动机总公司， 1990.
[16] 文长龙. 激光冲击强化对微动疲劳寿命的影响研究[D]. 南京：南京航空航天大学， 2017.
[17] 何卫锋，李翔，聂祥樊，等. 钛合金薄壁构件激光冲击残余应力稳定性研究[J]. 金属学报， 2018， 54(3): 411-418.
[18] REN X D， RUAN. Metallographic Structure Evolution of 6061-T651 Aluminum Alloy Processed by Laser Shock Peening: Effect of Tempering at the Elevated Temperatures[J]. Surface & Coatings Technology， 2013， 221(5): 111-117.

Effects of Laser Shock Peening on High-Temperature Fretting Fatigue Life of Titanium Alloy

激光冲击强化对钛合金高温微动疲劳寿命的影响

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