Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (11): 2542-2548.doi: 10.13229/j.cnki.jdxbgxb20210333

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Effect of ultrasonic impact on fatigue performance of friction stir weld

Lei WANG1(),Bing-han HUANG2,Jia-hui CONG2,3,Li HUI3,Song ZHOU2,3,Yong-zhen XU2   

  1. 1.College of Mechanical Engineering，Suzhou University of Science and Technology，Suzhou 215000，China
    2.School of Mechatronics Egineering，Shenyang Aerospace University，Shenyang 110136，China
    3.Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process，Shenyang Aerospace University，Shenyang 110136，China
  • Received:2021-03-12 Online:2022-11-01 Published:2022-11-16

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Abstract:

Ultrasonic impact is used to process the welding seam of aluminum alloy 2024-T4 friction stir welding. The residual stress， microstructure， microhardness and fatigue performance of the specimens before and after ultrasonic impact were compared and analyzed. The results show， after ultrasonic impact treatment， residual compressive stress is introduced into the surface of the specimen， and the average residual compressive stress can reach 263 MPa. The surface structure of the sample is refined after ultrasonic impact treatment， the depth of the deformation layer can reach 50~70 μm， and the surface hardness is increased from 175 HV to 235 HV. The fatigue life of the specimens treated by ultrasonic impact are significantly improved. The fatigue life of the ultrasonic impact specimens are 1.72~2 times that of the unimpacted specimens， and the location of fatigue crack initiation is transferred from the surface to the subsurface below the strengthening layer.

Key words: mechanical engineering, aluminum alloy, friction stir welding, ultrasonic impact, fatigue performance

CLC Number: 

  • TG405

Table 1

Chemical composition of 2024 aluminum alloy"

元素质量分数/%
Si0.5
Fe0.5
Cu3.8~4.9
Mg1.2~1.8
Zn0.3
Ti0.15
Mn0.3~0.9
其他Ni：0.1， Fe+Ni：0.5
Al余量

Fig.1

Schematic diagram of fatigue specimen"

Fig.2

Schematic diagram of specimens cross section hardness test"

Fig.3

Schematic diagram of the hardness test along the depth of ultrasonic impact treatment specimen"

Fig.4

Surface residual stress distribution"

Fig.5

Schematic diagram of ultrasonic impact changing the surface structure of the material"

Fig.6

Microstructure of sample after ultrasonic impact"

Fig.7

Comparison of hardness before and after ultrasonic impact treatment"

Fig.8

Ultrasonic impact treatment sample hardness test along the depth direction"

Fig.9

Fatigue life of welded joints before and after ultrasonic impact treatment"

Fig.10

Fatigue fracture of untreated specimen"

Fig.11

Fatigue fracture of ultrasonic impact specimen"

1 徐滨士,朱绍华. 表面工程的理论与技术[M]. 北京: 国防工业出版社, 1999.
2 张文博, 徐开国, 张汝春. 焊接接头疲劳强度的研究及其技术工艺的改进[J]. 煤矿机械, 2005(3):70-73.
Zhang Wen-bo, Xu Kai-guo, Zhang Ru-chun. Research on fatigue strength of welded joints and improvement of technical process[J]. Coal Mining Machinery, 2005(3): 70-73.
3 王炳英,霍立兴,王东坡,等.等离子喷涂法改善焊接结构的疲劳性能[J].焊接学报,2006,27(12): 97-100.
Wang Bing-ying, Huo Li-xing, Wang Dong-po, et al. Plasma spraying method improves the fatigue performance of welded structures[J]. Transactions of the China Welding Institution, 2006, 27(12): 97-100.
4 Gao Y K, Wu X R. Experimental investigation and fatigue life prediction for 7475-T7351 aluminum alloy with and without shot peening-induced residual stresses[J]. Acta Materialia, 2011, 59(9): 3737-3747.
5 He B L, Wei K, Yu Y X, et al. Fatigue life analysis of SMA490BW steel welded but joint for train bogie based on ABAQUS/FE-SAFE[J]. China Welding, 2016(4): 5-12.
6 王桂阳,王海斗,张玉波,等.超声冲击法提高焊接接头疲劳特性研究进展[J]. 材料导报, 2016, 30(9): 87-94.
Wang Gui-yang, Wang Hai-dou, Zhang Yu-bo, et al. Research progress on improving fatigue characteristics of welded joints by ultrasonic impact method[J]. Materials Guide, 2016, 30(9): 87-94.
7 鲁金忠, 季仕杰, 吴刘军, 等. 激光冲击⁃超声滚压复合工艺对AZ91D镁合金力学性能的影响[J]. 吉林大学学报: 工学版, 2020, 50(4): 1301-1309.
Lu Jin-zhong, Ji Shi-jie, Wu Liu-jun, et al. Effect of laser shock ultrasonic rolling composite process on mechanical properties of AZ91D magnesium alloy[J]. Journal of Jilin University(Engineering and Technology Edition), 2020,50(4): 1301-1309.
8 白易立, 王东坡, 邓彩艳, 等. 超声冲击强度对焊接接头疲劳寿命的影响[J]. 焊接学报, 2019, 40(12): 149-153, 168.
Bai Yi-li, Wang Dong-po, Deng Cai-yan, et al. Influence of ultrasonic impact strength on fatigue life of welded joints[J]. Transactions of the China Welding Institution, 2019, 40(12): 149-153, 168.
9 Poja S, Farshid Z, Mohammad A, et al. Experimental study of transverse attachment joints with 40 and 60 mm thick main plates, improved by high-frequency mechanical impact treatment(HFMI)-science direct[J]. Engineering Structures, 2018, 155: 251-266.
10 Almohaisen A M N, Hassan K S. Improving the mechanical properties of aluminum alloys 6061-T6 friction stir welding joints using ultrasonic peening[J]. IOP Conference Series: Materials Science and Engineering, 2020, 881(1): 012093.
11 吴圣川, 胡雅楠, 康国政. 材料疲劳损伤行为的先进光源表征技术[M]. 北京: 科学出版社, 2018.
12 Askeland Donald R, Phule Pradeep P. Essentials of Materials Science and Engineering[M]. Beijing: Defence Industry Press, 2004.
13 Ruslan K, Young-Sik P, Erfan M, et al. An improvement in fatigue behavior of AISI 4340 steel by shot peening and ultrasonic nanocrystal surface modification[J]. Materials Science and Engineering, 2020, 791: 139752.
14 Zhang W W, Lawrence Y Y, Noyan I C. Microscale laser shock peening of thin films, part 1: experiment, modeling and s imulation[J]. Journal of Manufacturing Science and Engineering, 2004, 126(1): 10-17.
15 Tan Y, Wu G, Yang J M, et al. Laser shock peening on fatigue crack growth behavior of aluminum alloy[J]. Fatigue & Fracture of Engineering Materials & Structures, 2003, 27: 649-655.
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