TC4钛合金激光冲击强化数值模拟

王博涵; 程礼; 丁均梁; 崔文斌; 王长凯; 李冬春

doi:10.13224/j.cnki.jasp.2021.05.007

TC4钛合金激光冲击强化数值模拟

doi: 10.13224/j.cnki.jasp.2021.05.007

1.
空军工程大学航空工程学院,西安 710038
2.
先进航空发动机协同创新中心,北京 100191

基金项目: 国家重点基础研究发展计划（2015CB057400）

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- 文章访问数: 194
- HTML浏览量: 3
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- 被引次数: 0
出版历程
- 收稿日期: 2020-08-15
- 刊出日期: 2021-05-28

Numerical simulation on laser shock peening of TC4 titanium alloy

1.
Aeronautics Engineering College,Air Force Engineering University,Xi’an 710038,China
2.
Collaborative Innovation Center for Advanced Aero-Engines,Beijing 100191,China

摘要

摘要: 采用连续显式动态冲击策略对航空用TC4钛合金进行激光冲击强化数值模拟研究。根据冲击波能量变化曲线确定单次冲击求解时间为3 000 ns,并分析了应力波传播过程。在此基础上开展多点冲击模拟,分析了功率密度、冲击次数和光斑搭接率对残余应力、应变场的影响。得出增加功率密度对增大表面残余压应力的效果更好;增加冲击次数对增大残余压应力影响深度的效果更好;50%光斑搭接率有效地避免了冲击不均匀和搭接空隙现象。实验和仿真所得的试件表面残余压应力变化趋势相同,数值大小基本吻合。冲击1、3次时,两者的误差分别为4.1%、2.6%,说明仿真结果具有一定的参考意义。
- 激光冲击强化 /
- TC4钛合金 /
- 应力波 /
- 残余应力 /
- 塑性应变
Abstract: The continuous explicit dynamic impact strategy was used to carry out the numerical simulation study on laser shock peening of TC4 titanium alloy for aviation. According to the shock wave energy change curve, the solution time 3 000 ns of a single shock was determined, and the stress wave propagation process was analyzed. On this basis, a multi-point impact simulation was carried out, and the effects of power density, impact times and spot overlap rate on residual stress and strain field were analyzed. It was concluded that increasing the power density had a better effect on increasing the residual compressive stress on the surface; increasing the number of impacts had a better effect on increasing the depth of the residual compressive stress; the 50% spot overlap rate effectively avoided uneven impact and overlap gaps phenomenon. The change trend of the residual compressive stress on the surface of the specimen obtained by the experiment and the simulation was the same, and the numerical value was basically consistent. When the impact was 1 and 3 times, the errors of these two were 4.1% and 2.6%, respectively, indicating that the simulation results have certain reference significance.
- laser shock peening /
- TC4 titanium alloy /
- stress wave /
- residual stress /
- plastic strain

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参考文献(26)

[1]	REN X D,ZHAN Q B,YANG H M,et al.The effects of residual stress on fatigue behavior and crack propagation from laser shock processing-worked hole［J］.Materials Design,2013,44:149-154.
[2]	李媛,何卫锋,聂祥樊,等.激光冲击TC17钛合金疲劳裂纹扩展试验［J］.中国表面工程,2017,30(3):40-47. LI Yuan,HE Weifeng,NIE Xiangfan,et al.Fatigue crack growth behavior of TC17 titanium alloy with laser shock peening［J］.China Surface Engineering,2017,30(3):40-47.(in Chinese)
[3]	LUO Sihai,ZHOU Liucheng,NIE Xiangfan,et al.The compound process of laser shock peening and vibratory finishing and its effect on fatigue strength of Ti-3.5Mo-6.5Al-1.5Zr-0.25Si titanium alloy［J］.Journal of Alloys and Compounds,2019,783:828-835.
[4]	LIU Jingyuan,CHENG Li,LI Silu,et al.Selective modal control of blade vibrations by local laser shock peening［J］.Journal of Sound and Vibration,2019,445:2-16.
[5]	ZHOU Liucheng,HE Weifeng,LUO Sihai,et al.Laser shock peening induced surface nanocrystallization and martensite transformation in austenitic stainless steel［J］.Jouranl of Alloys and Compounds,2016,655:66-70.
[6]	ZHOU Liucheng,LI Yinghong,HE Weifeng,et al.Deforming TC6 titanium alloys at ultrahigh strain rates during multiple laser shock peening［J］.Materials Science and Engineering:A,2013,578:181-186.
[7]	LIU Lin,WANG Jiaojiao,ZHOU Jianzhong.Characterization and analysis on micro-hardness and microstructure evolution of brass subjected to laser shock peening［J］.Optics and Laser Technology,2019,115:325-330.
[8]	ZHOU Liucheng,LONG Changbai,HE Weifeng,et al.Improvement of high-temperature fatigue performance in the nickel-based alloy by LSP-induced surface nanocrystallization［J］.Jouranl of Alloys and Compounds,2018,744:156-164.
[9]	刘庆瑔.航空发动机钛合金叶片制造技术及失效分析［M］.北京:航空工业出版社,2018.
[10]	NIE Xiangfan,HE Weifeng,ZANG Shunlai,et al.Effects and application to improve high cycle fatigue resistance of TC11 titanium alloy by laser shock peening with multiple impacts［J］.Surface and Coating Technology,2014,253:68-75.
[11]	MA Zhuang,LI Yinghong,WANG Cheng.Investigation of laser shock peening on aero-engine compressor rotor blade［J］.Key Engineering Materials,2008,27:404-407.
[12]	周留成.激光冲击复合强化机理及在航空发动机涡轮叶片上的应用研究［D］.西安:空军工程大学,2014. ZHOU Liucheng.Study on the mechanism of laser shock composite strengthening and its application in aero-engine turbine blade［D］.Xi’an:Air Force Engineering University,2014.(in Chinese)
[13]	周磊,汪诚,周留成,等.激光冲击表面强化对焊接接头力学性能的影响［J］.中国表面工程,2010,23(5):41-44. ZHOU Lei,WANG Cheng,ZHOU Liucheng,et al.The effect of laser shock surface processing on mechanical properties of welded joints［J］.China Surface Engineering,2010,23(5):41-44.(in Chinese)
[14]	BRAISTED W,BROEKMAN R.Finite element simulation of laser shock Peening［J］.International Journal of Fatigue,1999,21(7):719-724.
[15]	苟磊,马玉娥,杜永.多点连续动态激光冲击强化残余应力场数值分析［J］.航空动力学报,2019,34(12):2738-2744. GOU Lei,MA Yu’e,DU Yong.Continuous dynamic numerical analysis of residual stress field under multi-point laser shock peening［J］.Journal of Aerospace Power,2019,34(12):2738-2744.(in Chinese)
[16]	王春光,宋亚杰,朱然.多点激光冲击强化对TC17钛合金表面残余应力和表面变形影响的数值模拟［J］.应用激光,2019,39(3):475-481. WANG Chunguang,SONG Yajie,ZHU Ran.Numerical simulation of surface residual stress and deformation of TC17 titanium alloy under multiple laser shock peening［J］.Applied Laser,2019,39(3):475-481.(in Chinese)
[17]	李应红.激光冲击强化理论与技术［M］.北京:科学出版社,2013:116-118.
[18]	KAY G.Failure modeling of titanium Ti6A14V and aluminum 2024-T3 with the Johnson-Cook material model［R］.San Francisco,US:Lawrence Livermore National Laboratory,2002.
[19]	薛红前.超声振动载荷下材料的超高周疲劳性能研究［D］.西安:西北工业大学,2006. XUE Hongqian.Investigation on fatigue behavior of materials in very high cycle regime under vibratory loading［D］.Xi’an:Northwestern Potytechnical University,2006.(in Chinese)
[20]	聂祥樊.钛合金薄叶片激光冲击超高应变率动态响应与强化机理研究［D］.西安:空军工程大学,2015. NIE Xiangfan.Study on dynamic response and strengthening mechanism of ultra-high strain rate of laser impact on titanium alloy thin blade［D］.Xi’an:Air Force Engineering University,2015.(in Chinese)
[21]	何卫峰,李应红,李伟,等.激光冲击强化提高压气机叶片疲劳性能研究［J］.航空动力学报,2011,26(7):1551-1556. HE Weifeng,LI Yinghong,LI Wei,et al.Laser shock peening on vibration fatigue behavior of compressor［J］.Journal of Aerospace Power,2011,26(7):1551-1556.(in Chinese)
[22]	FABBRO R,FOURNIER J,BALLARD P.Physics study of laser-produced plasma in confined geometry［J］.Journal of Applied Physics,1990,68(2):775-784.
[23]	张永康,于水生,姚红兵.强脉冲激光在AZ31B镁合金中诱导冲击波的实验研究［J］.物理学报,2010,59(8):5602-5605. ZHANG Yongkang,YU Shuisheng,YAO Hongbing.Experimental study on shock wave induced by strong pulsed laser in AZ31B magnesium alloy［J］.Acta Physics Sinica,2010,59(8):5602-5605.(in Chinese)
[24]	CAO Z W,CHE Z G,ZOU S K,et al.Numerical simulation of residual stress field induced by laser shock processing with square spot［J］.Journal of Shanghai University(English Edition),2011,15(6):553-556.
[25]	蒋聪盈,黄露,王婧辰,等.TC4 钛合金激光冲击强化与喷丸强化的残余应力模拟分析［J］.表面技术,2016,45(4):5-9. JIANG Congying,HUANG Lu,WANG Jingchen,et al.Simulation analysis of the residual stress field of TC4 Ti alloy under laser shock peening and shot peening［J］.Surface Technology,2016,45(4):5-9.(in Chinese)
[26]	余天宇,戴峰泽,张永康,等.平顶光束激光冲击2024铝合金诱导残余应力场的模拟与实验［J］.中国激光,2012,39(10):1003001.1-1003001.7. YU Tianyu,DAI Fengze,ZHANG Yongkang,et,al.Simulation and experimental study on residual stress field of 2024 aluminum alloy induced by flat-top laser beam［J］.Chinese Journal of Lasers,2012,39(10):1003001.1-1003001.7.(in Chinese)