Surface mechanical properties of 2024-T351 aluminum alloy strengthened by cryogenic laser peening

Xu Yangyang; Zhou Jianzhong; Tan Wensheng; Meng Xiankai; Sheng Jie; Huang Shu; Sun Yunjie

doi:10.3788/IRLA201847.1206002

Volume 47 Issue 12

Jan. 2019

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Xu Yangyang, Zhou Jianzhong, Tan Wensheng, Meng Xiankai, Sheng Jie, Huang Shu, Sun Yunjie. Surface mechanical properties of 2024-T351 aluminum alloy strengthened by cryogenic laser peening[J]. Infrared and Laser Engineering, 2018, 47(12): 1206002-1206002(8). doi: 10.3788/IRLA201847.1206002

Citation:

Xu Yangyang, Zhou Jianzhong, Tan Wensheng, Meng Xiankai, Sheng Jie, Huang Shu, Sun Yunjie. Surface mechanical properties of 2024-T351 aluminum alloy strengthened by cryogenic laser peening[J]. Infrared and Laser Engineering, 2018, 47(12): 1206002-1206002(8). doi: 10.3788/IRLA201847.1206002

Surface mechanical properties of 2024-T351 aluminum alloy strengthened by cryogenic laser peening

doi: 10.3788/IRLA201847.1206002

1.
School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China;
2.
Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing,Changzhou College of Information Technology,Changzhou 213146,China

Received Date: 2018-07-10
Rev Recd Date: 2018-08-28
Publish Date: 2018-12-25

Abstract

In order to investigate the effects of cryogenic laser peening(CLP) on the surface mechanical properties of 2024-T351 aluminum alloy, the Nd:YAG nanosecond pulsed laser was used to carry out the laser peening on 2024-T351 aluminum alloy at room temperature(25℃) and cryogenic temperature(-100℃), respectively. The micro-hardness, residual stress and microstructure of the samples were tested and analyzed, and the strengthening mechanism of CLP was discussed by the laser induced microstructure at room temperature and cryogenic temperature. The results show that, the dislocation density of CLP-treated samples is higher and the grain size on the surface is smaller than that of LPed after dynamic recrystallization due to the effect of cryogenic temperature on the sliding and annihilation of the dislocation. The surface micro-hardness and residual compressive stress of CLP-treated samples are respectively increased by about 20.3% and 21.6%, compared with LP samples, and the surface mechanical properties of 2024-T351 aluminum alloy are improved.
- cryogenic laser peening(CLP),
- microstructure,
- residual stress,
- micro-hardness

References

[1]	Li Qihan, Wang Yanrong. The Problem of Aero-engine Structural Strength Design[M]. Shanghai:Press of Shanghai Jiaotong University, 2014. (in Chinese)李其汉, 王延荣. 航空发动机结构强度设计问题[M]. 上海:上海交通大学出版社, 2014.
[2]	Wagner L, Wollmann M, Mhaede M, et al. Surface layer properties and fatigue behavior in Al 7075-T73 and Ti-6Al-4V:Comparing results after laser peening; shot peening and ball-burnishing[J]. International Journal of Structural Integrity, 2011, 2(2):185-199.
[3]	Huang S, Zhou J Z, Sheng J, et al. Effects of laser peening with different coverage areas on fatigue crack growth properties of 6061-T6 aluminum alloy[J]. International Journal of Fatigue, 2013, 47(2):292-299.
[4]	Shen Xiaojun, Wang Cheng, An Zhibin, et al. Effects of oblique laser shock processing on rotary bending fatigue of aero-engine fan shaft[J]. Infrared and Laser Engineering, 2015, 44(12):3548-3553. (in Chinese)沈晓骏, 汪诚, 安志斌, 等. 斜激光冲击对航空发动机风扇轴弯曲疲劳性能的影响[J]. 红外与激光工程, 2015, 44(12):3548-3553.
[5]	Kong Dejun, Zhou Chaozheng, Wu Yongzhong. Mechanism on residual stress of 304 stainless steel by laser shock processing[J]. Infrared and Laser Engineering, 2010, 39(4):736-740. (in Chinese)孔德军, 周朝政, 吴永忠. 304不锈钢激光冲击处理后的残余应力产生机理[J]. 红外与激光工程, 2010, 39(4):736-740.
[6]	Cao Yupeng, Feng Aixin, Xue Wei, et al. Experimental research and theoretical study of laser shock wave induced dynamic strain on 2024 aluminum alloy sufface[J]. Chinese J Laser, 2014, 41(9):0903004. (in Chinese)曹宇鹏, 冯爱新, 薛伟, 等. 激光冲击波诱导2024铝合金表面动态应变特性试验研究及理论分析[J]. 中国激光, 2014, 41(9):0903004.
[7]	Chen Ding, Li Wenxian. Cryogenic treatment of aluminum and aluminum alloys[J]. Chinese Journal of Nonferrous Metals, 2000, 10(6):891-895. (in Chinese)陈鼎, 黎文献. 铝和铝合金的深冷处理[J]. 中国有色金属学报, 2000, 10(6):891-895.
[8]	Wang J, Fu R, Li Y, et al. Effects of deep cryogenic treatment and low-temperature aging on the mechanical properties of friction-stir-welded joints of 2024-T351 aluminum alloy[J]. Materials Science Engineering A, 2014, 609(27):147-153.
[9]	Konkova T, Mironov S, Korznikov A, et al. Microstructural response of pure copper to cryogenic rolling[J]. Acta Materialia, 2010, 58(16):5262-5273.
[10]	Rangaraju N, Raghuram T, Krishna B V, et al. Effect of cryo-rolling and annealing on microstructure and properties of commercially pure aluminum[J]. Materials Science and Engineering A, 2005, 398(1):246-251.
[11]	Novelli M, Fundenberger J J, Bocher P, et al. On the effectiveness of surface severe plastic deformation by shot peening at cryogenic temperature[J]. Applied Surface Science, 2016, 389:1169-1174.
[12]	Ye C, Suslov S, Lin D, et al. Cryogenic ultrahigh strain rate deformation induced hybrid nanotwinned microstructure for high strength and high ductility[J]. Journal of Applied Physics, 2014, 115(21):213519.
[13]	Ye C, Suslov S, Lin D, et al. Microstructure and mechanical properties of copper subjected to cryogenic laser shock peening[J]. Journal of Applied Physics, 2011, 110:083504.
[14]	Xu Gaofeng, Zhou Jianzhong, Meng Xiankai, et al. Propagation and dislocation development properties of laser shock waves in monocrystalline titanium under cryogenic environment[J]. Chinese J Laser, 2017, 44(6):0602005. (in Chinese)徐高峰, 周建忠, 孟宪凯, 等. 深冷环境下激光冲击波在单晶钛中的传播及位错扩展特性[J]. 中国激光, 2017, 44(6):0602005.
[15]	Meng Xiankai, Zhou Jianzhong, Su Chun, et al. Effects of temperature on surface mechanical properties of 2024 aluminum alloy treated by laser peening[J]. Chinese J Laser, 2016, 43(10):1002003. (in Chinese)孟宪凯, 周建忠, 苏纯, 等. 温度对激光喷丸强化2024航空铝合金表面力学性能的影响[J]. 中国激光, 2016, 43(10):1002003.
[16]	Huang Yuqi. Impact response and microstructure characteristic of 6061-T6 aluminum alloy at cryogenic temperature[D]. Taiwan:Chenggong University, 2013.(in Chinese)黄钰祺. 6061-T6铝合金在低温下之撞击特性与微观结构分析[D]. 台湾:成功大学, 2013.
[17]	Liao Y, Cheng G J. Controlled precipitation by thermal engineered laser shock peening and its effect on dislocation pinning:Multiscale dislocation dynamics simulation and experiments[J]. Acta Materialia, 2013, 61(6):1957-1967.
[18]	Lu Jinzhong, Luo Kaiyu, Feng Aixin, et al. Microstructure enhancement mechanism of LY2 aluminum alloy means of a single laser shock processing[J]. Chinese J Laser, 2010, 37(10):2662-2666.(in Chinese)鲁金忠, 罗开玉, 冯爱新, 等. 激光单次冲击LY2铝合金微观强化机制研究[J]. 中国激光, 2010, 37(10):2662-2666.
[19]	Ren Xudong, Zhang Tian, Jiang Dawei, et al. Effects of laser shock processing and aluminizing on microstructure and properties of 12 CrMoV alloy[J]. Infrared and Laser Engineering, 2011, 40(2):241-244. (in Chinese)任旭东, 张田, 姜大伟,等. 激光冲击与渗铝复合处理对12CrMoV组织性能的影响[J]. 红外与激光工程, 2011, 40(2):241-244.
[20]	Achintha M, Nowell D. Eigenstrain modellingof residual stresses generated by arraysof LSP shots[J]. Procedia Engineering, 2011, 10(7):1327-1332.

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Surface mechanical properties of 2024-T351 aluminum alloy strengthened by cryogenic laser peening

1. School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China;

2. Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing,Changzhou College of Information Technology,Changzhou 213146,China

Received Date: 2018-07-10

Rev Recd Date: 2018-08-28

Publish Date: 2018-12-25

Key words:

Abstract: In order to investigate the effects of cryogenic laser peening(CLP) on the surface mechanical properties of 2024-T351 aluminum alloy, the Nd:YAG nanosecond pulsed laser was used to carry out the laser peening on 2024-T351 aluminum alloy at room temperature(25℃) and cryogenic temperature(-100℃), respectively. The micro-hardness, residual stress and microstructure of the samples were tested and analyzed, and the strengthening mechanism of CLP was discussed by the laser induced microstructure at room temperature and cryogenic temperature. The results show that, the dislocation density of CLP-treated samples is higher and the grain size on the surface is smaller than that of LPed after dynamic recrystallization due to the effect of cryogenic temperature on the sliding and annihilation of the dislocation. The surface micro-hardness and residual compressive stress of CLP-treated samples are respectively increased by about 20.3% and 21.6%, compared with LP samples, and the surface mechanical properties of 2024-T351 aluminum alloy are improved.

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Reference (20)

[1]	Li Qihan, Wang Yanrong. The Problem of Aero-engine Structural Strength Design[M]. Shanghai:Press of Shanghai Jiaotong University, 2014. (in Chinese)李其汉, 王延荣. 航空发动机结构强度设计问题[M]. 上海:上海交通大学出版社, 2014.
[2]	Wagner L, Wollmann M, Mhaede M, et al. Surface layer properties and fatigue behavior in Al 7075-T73 and Ti-6Al-4V:Comparing results after laser peening; shot peening and ball-burnishing[J]. International Journal of Structural Integrity, 2011, 2(2):185-199.
[3]	Huang S, Zhou J Z, Sheng J, et al. Effects of laser peening with different coverage areas on fatigue crack growth properties of 6061-T6 aluminum alloy[J]. International Journal of Fatigue, 2013, 47(2):292-299.
[4]	Shen Xiaojun, Wang Cheng, An Zhibin, et al. Effects of oblique laser shock processing on rotary bending fatigue of aero-engine fan shaft[J]. Infrared and Laser Engineering, 2015, 44(12):3548-3553. (in Chinese)沈晓骏, 汪诚, 安志斌, 等. 斜激光冲击对航空发动机风扇轴弯曲疲劳性能的影响[J]. 红外与激光工程, 2015, 44(12):3548-3553.
[5]	Kong Dejun, Zhou Chaozheng, Wu Yongzhong. Mechanism on residual stress of 304 stainless steel by laser shock processing[J]. Infrared and Laser Engineering, 2010, 39(4):736-740. (in Chinese)孔德军, 周朝政, 吴永忠. 304不锈钢激光冲击处理后的残余应力产生机理[J]. 红外与激光工程, 2010, 39(4):736-740.
[6]	Cao Yupeng, Feng Aixin, Xue Wei, et al. Experimental research and theoretical study of laser shock wave induced dynamic strain on 2024 aluminum alloy sufface[J]. Chinese J Laser, 2014, 41(9):0903004. (in Chinese)曹宇鹏, 冯爱新, 薛伟, 等. 激光冲击波诱导2024铝合金表面动态应变特性试验研究及理论分析[J]. 中国激光, 2014, 41(9):0903004.
[7]	Chen Ding, Li Wenxian. Cryogenic treatment of aluminum and aluminum alloys[J]. Chinese Journal of Nonferrous Metals, 2000, 10(6):891-895. (in Chinese)陈鼎, 黎文献. 铝和铝合金的深冷处理[J]. 中国有色金属学报, 2000, 10(6):891-895.
[8]	Wang J, Fu R, Li Y, et al. Effects of deep cryogenic treatment and low-temperature aging on the mechanical properties of friction-stir-welded joints of 2024-T351 aluminum alloy[J]. Materials Science Engineering A, 2014, 609(27):147-153.
[9]	Konkova T, Mironov S, Korznikov A, et al. Microstructural response of pure copper to cryogenic rolling[J]. Acta Materialia, 2010, 58(16):5262-5273.
[10]	Rangaraju N, Raghuram T, Krishna B V, et al. Effect of cryo-rolling and annealing on microstructure and properties of commercially pure aluminum[J]. Materials Science and Engineering A, 2005, 398(1):246-251.
[11]	Novelli M, Fundenberger J J, Bocher P, et al. On the effectiveness of surface severe plastic deformation by shot peening at cryogenic temperature[J]. Applied Surface Science, 2016, 389:1169-1174.
[12]	Ye C, Suslov S, Lin D, et al. Cryogenic ultrahigh strain rate deformation induced hybrid nanotwinned microstructure for high strength and high ductility[J]. Journal of Applied Physics, 2014, 115(21):213519.
[13]	Ye C, Suslov S, Lin D, et al. Microstructure and mechanical properties of copper subjected to cryogenic laser shock peening[J]. Journal of Applied Physics, 2011, 110:083504.
[14]	Xu Gaofeng, Zhou Jianzhong, Meng Xiankai, et al. Propagation and dislocation development properties of laser shock waves in monocrystalline titanium under cryogenic environment[J]. Chinese J Laser, 2017, 44(6):0602005. (in Chinese)徐高峰, 周建忠, 孟宪凯, 等. 深冷环境下激光冲击波在单晶钛中的传播及位错扩展特性[J]. 中国激光, 2017, 44(6):0602005.
[15]	Meng Xiankai, Zhou Jianzhong, Su Chun, et al. Effects of temperature on surface mechanical properties of 2024 aluminum alloy treated by laser peening[J]. Chinese J Laser, 2016, 43(10):1002003. (in Chinese)孟宪凯, 周建忠, 苏纯, 等. 温度对激光喷丸强化2024航空铝合金表面力学性能的影响[J]. 中国激光, 2016, 43(10):1002003.
[16]	Huang Yuqi. Impact response and microstructure characteristic of 6061-T6 aluminum alloy at cryogenic temperature[D]. Taiwan:Chenggong University, 2013.(in Chinese)黄钰祺. 6061-T6铝合金在低温下之撞击特性与微观结构分析[D]. 台湾:成功大学, 2013.
[17]	Liao Y, Cheng G J. Controlled precipitation by thermal engineered laser shock peening and its effect on dislocation pinning:Multiscale dislocation dynamics simulation and experiments[J]. Acta Materialia, 2013, 61(6):1957-1967.
[18]	Lu Jinzhong, Luo Kaiyu, Feng Aixin, et al. Microstructure enhancement mechanism of LY2 aluminum alloy means of a single laser shock processing[J]. Chinese J Laser, 2010, 37(10):2662-2666.(in Chinese)鲁金忠, 罗开玉, 冯爱新, 等. 激光单次冲击LY2铝合金微观强化机制研究[J]. 中国激光, 2010, 37(10):2662-2666.
[19]	Ren Xudong, Zhang Tian, Jiang Dawei, et al. Effects of laser shock processing and aluminizing on microstructure and properties of 12 CrMoV alloy[J]. Infrared and Laser Engineering, 2011, 40(2):241-244. (in Chinese)任旭东, 张田, 姜大伟,等. 激光冲击与渗铝复合处理对12CrMoV组织性能的影响[J]. 红外与激光工程, 2011, 40(2):241-244.
[20]	Achintha M, Nowell D. Eigenstrain modellingof residual stresses generated by arraysof LSP shots[J]. Procedia Engineering, 2011, 10(7):1327-1332.

Surface mechanical properties of 2024-T351 aluminum alloy strengthened by cryogenic laser peening

doi: 10.3788/IRLA201847.1206002

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References

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通讯作者: 陈斌, bchen63@163.com

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