温度辅助激光冲击强化对GH4169合金力学性能的影响
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摘要
利用波长为1064 nm、脉宽为14 ns、单脉冲能量为5 J的Nd:YAG纳秒脉冲激光器对GH4169合金试件进行了常温激光冲击强化处理和温度辅助激光冲击强化处理;采用X射线衍射仪和HV-1000显微硬度计测量了强化处理前后试件的表面残余应力与表面显微硬度。实验结果表明:经激光冲击强化与温度辅助激光冲击强化处理后,试件表面引入了一定数值的残余压应力,同时表面显微硬度得到提高;但在残余压应力和显微硬度数值方面,经温度辅助激光冲击强化处理的试件均比常温激光冲击强化处理的试件要大,且随着辅助温度的增加,试件的表面残余压应力和表面显微硬度值均呈增加趋势。因此,在一定的温度范围内,采取温度辅助激光冲击强化的方式对GH4169合金进行处理,可以获得比常温激光冲击强化处理更好的强化效果,同时适当提高强化温度,在一定程度上可以进一步提高GH4169合金的强化效果。
The treatment of room temperature laser shock peening and temperature-assisted laser shock peening for GH4169 alloy samples were carried out on using Nd:YAG laser system with the wavelength of 1064 nm,pulse width of 14 ns and pulse energy of 5 J.Surface residual stress and micro-hardness before and after laser peening were tested by X-ray diffraction machine and HV-1000 micro-hardness tester,respectively.The experimental results show that after the treatment of laser shock peening and temperature-assisted laser shock peening,a certain amount of residual compressive stress is introduced on the surface of samples.Meanwhile,the micro-hardness of samples is improved.However,in terms of the values of residual compressive stress and micro-hardness,the samples shock processed by temperature-assisted laser shock peening are lager than the sample shock processed by room temperatnre laser shock peening.And with the increase of the assisted temperature,both the surface residual compressive stress and surface micro-hardness of the GH4169 alloy samples show an increasing trend.So,in a certain temperature range,the GH4169 alloy processed by the temperature-assisted laser shock peening can get a better strengthen effect than that by the laser shock peening at room temperature,and increasing the assisted temperature appropriately can improve the strengthen effect of GH4169 alloy.
The treatment of room temperature laser shock peening and temperature-assisted laser shock peening for GH4169 alloy samples were carried out on using Nd:YAG laser system with the wavelength of 1064 nm,pulse width of 14 ns and pulse energy of 5 J.Surface residual stress and micro-hardness before and after laser peening were tested by X-ray diffraction machine and HV-1000 micro-hardness tester,respectively.The experimental results show that after the treatment of laser shock peening and temperature-assisted laser shock peening,a certain amount of residual compressive stress is introduced on the surface of samples.Meanwhile,the micro-hardness of samples is improved.However,in terms of the values of residual compressive stress and micro-hardness,the samples shock processed by temperature-assisted laser shock peening are lager than the sample shock processed by room temperatnre laser shock peening.And with the increase of the assisted temperature,both the surface residual compressive stress and surface micro-hardness of the GH4169 alloy samples show an increasing trend.So,in a certain temperature range,the GH4169 alloy processed by the temperature-assisted laser shock peening can get a better strengthen effect than that by the laser shock peening at room temperature,and increasing the assisted temperature appropriately can improve the strengthen effect of GH4169 alloy.
引文
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[20]刘晓璇,刘江波.扫描方式对激光立体成形GH4169合金高温力学性能和热疲劳性能的影响[J].锻压技术,2017,42(12):140-143.LIU Xiaoxuan,LIU Jiangbo.Influences of scanning method on mechanical properties at high temperature and thermal fatigue property of laser solid forming alloy GH4169[J].Forging&Stamping Technology,2017,42(12):140-143.
[21]齐欢.INCONEL 718(GH4169)高温合金的发展与工艺[J].材料工程,2012,40(8):92-100.QI Huan.Development and technology of INCONEL 718(GH4169)super alloy[J].Material Engineering,2012,40(8):92-100.
[22]李宏胜,汪允鹤,张伟,等.工业机器人NURBS自由曲线的轨迹规划[J].信息与控制,2017,46(2):129-135.LI Hongsheng,WANG Yunhe,ZHANG Wei,et al.Trajectory planning of NURBS freeform for industrial robots[J].Information and Control,2017,46(2):129-135.
[23]《高温合金手册》编写组.高温合金手册[M].北京:冶金工业出版社,1972.
[2]李应红.激光冲击强化理论与技术[M].北京:科学出版社,2013.LI Yinghong.Theory and technology of laser shock processing[M].Beijing:Science Press,2013.
[3]WU J J,ZHAO J B,QIAO H C,et al.Acoustic wave detection of laser shock peening[J].Opto-Electronic Advances,2018,1(9):180016.
[4]孙汝剑,朱颖,郭伟,等.激光冲击强化对TC17表面形貌及残余应力场影响的有限元数值模拟研究[J].塑性工程学报,2017,24(1):187-193.SUN Rujian,ZHU Ying,GUO Wei,et al.Effect of laser shock processing on surface morphology and residual stress field of TC17titanium alloy by FEM method[J].Journal of Plasticity Engineering,2017,24(1):187-193.
[5]MONTROSS C S,WEI T,YE L,et al.Laser shock processing and its effects on microstructure and properties of metal alloys:a review[J].International Journal of Fatigue,2002,24(10):1021-1036.
[6]BARRADAS S,JEANDIN M,BOLIS C,et al.Study of adhesion of PROTALcopper coating of Al 2017 using the laser shock adhesion test(LASAT)[J].Journal of Materials Science,2004,39(8):2707-2716.
[7]ZHANG Y,XU R.Experimental research of laser shock strengthening AM50 magnesium alloy[J].Chinese Journal of Lasers,2008,35(7):1068-1072.
[8]吴嘉俊,赵吉宾,乔红超,等.激光冲击强化技术的应用现状与发展[J].光电工程,2018,45(2):170690.WU Jiajun,ZHAO Jibin,QIAO Hongchao,et al.The application status and development of laser shock processing[J].Opto-Electronic Engineering,2018,45(2):170690.
[9]BADIEI S,HOLMLID L.Laser initiated detonation in Rydberg matter with a fast propagating shock wave,releasing protons with keV kinetic energy[J].Physics Letters A,2005,344(2):265-270.
[10]苏纯,周建忠,孟宪凯,等.温度辅助的激光冲击技术研究进展[J].表面技术,2016,45(10):121-128.SU Chun,ZHOU Jianzhong,MENG Xiankai,et al.Research progress of temperature-assisted laser shock technology[J].Surface Technology,2016,45(10):121-128.
[11]戴磊,周建忠,黄舒,等.温度辅助的金属箔板激光冲击微成形性能[J].光学学报,2014,34(s2):s214005.DAI Lei,ZHOU Jianzhong,HUANG Shu,et al.Formability of metal foil by temperature assisted microscale laser shock forming[J].Acta Optica Sinica,2014,34(s2):s214005.
[12]LIAO Y,YE C,KIM B J,et al.Nucleation of highly dense nanoscale precipitates based on warm laser shock peening[J].Journal of Applied Physics,2010,108(6):1345.
[13]YE C,LIAO Y,CHENG G J.Warm laser shock peening driven nanostructures and their effects on fatigue performance in aluminum alloy 6160[J].Advanced Engineering Materials,2010,12(4):291-297.
[14]TANI G,ORAZI L,FORTUNATO A,et al.Warm laser shock peening:New developments and process optimization[J].CIRPAnnals-Manufacturing Technology,2011,60(1):219-222.
[15]LIAO Y,YE C,KIM B J,et al.Nucleation of highly dense nanoscale precipitates based on warm laser shock peening[J].Journal of Applied Physics,2010,108(6):1345.
[16]YE C,SUSLOV S,KIM B J,et al.Fatigue performance improvement in AISI 4140 steel by dynamic strain aging and dynamic precipitation during warm laser shock peening[J].Acta Materialia,2011,59(3):1014-1025.
[17]YE C,LIAO Y,CHENG G J.Warm laser shock peening driven nanostructures and their effects on fatigue performance in aluminum alloy 6160[J].Advanced Engineering Materials,2010,12(4):291-297.
[18]TANI G,ORAZI L,FORTUNATO A,et al.Warm laser shock peening:New developments and process optimization[J].CIRPAnnals-Manufacturing Technology,2011,60(1):219-222.
[19]WANG K,LI M Q,LUO J,et al.Effect of theδ,phase on the deformation behavior in isothermal compression of superalloy GH4169[J].Materials Science&Engineering A,2011,528(13-14):4723-4731.
[20]刘晓璇,刘江波.扫描方式对激光立体成形GH4169合金高温力学性能和热疲劳性能的影响[J].锻压技术,2017,42(12):140-143.LIU Xiaoxuan,LIU Jiangbo.Influences of scanning method on mechanical properties at high temperature and thermal fatigue property of laser solid forming alloy GH4169[J].Forging&Stamping Technology,2017,42(12):140-143.
[21]齐欢.INCONEL 718(GH4169)高温合金的发展与工艺[J].材料工程,2012,40(8):92-100.QI Huan.Development and technology of INCONEL 718(GH4169)super alloy[J].Material Engineering,2012,40(8):92-100.
[22]李宏胜,汪允鹤,张伟,等.工业机器人NURBS自由曲线的轨迹规划[J].信息与控制,2017,46(2):129-135.LI Hongsheng,WANG Yunhe,ZHANG Wei,et al.Trajectory planning of NURBS freeform for industrial robots[J].Information and Control,2017,46(2):129-135.
[23]《高温合金手册》编写组.高温合金手册[M].北京:冶金工业出版社,1972.
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