Evolution Mechanism of Three-Point Bending Impact Fatigue Damage in Ultra-High Strength Steel 23Co14Ni12Cr3MoE Material

Abstract:

Carrier-based aircraft takeoff and landing devices endure repeated high-speed, high-energy, and high-load impacts during operation. This repeated impact results in fatigue damage, a primary cause of failure in these devices, commonly known as impact fatigue. To address multiple impact fatigue failures in the takeoff and landing process of carrier-based aircraft, an investigation into the three-point bending impact fatigue characteristics of ultra-high-strength steel 23Co14Ni12Cr3MoE (abbreviated as A100 material) was conducted using experimental and microscopic techniques. A reproducible impact loading device for three-point bending tests was devised, leveraging a drop hammer impact tester. This innovative setup enabled the proposal of a three-point bending impact fatigue testing method. Test specimens featuring U-shaped, V-90°, and V-60° notches were designed, drawing inspiration from the Charpy pendulum impact test for metallic materials (GB/T 229-2007). Impact fatigue testing was then performed on the drop hammer tester across five distinct energy levels: 25J, 30J, 35J, 40J, and 45J.The study comprehensively examined the load response, energy absorption, and fatigue life of the A100 material in relation to the number of notches and impacts. Post-experiment analysis using a light microscope and SEM electron microscope revealed key morphological features of the A100 material's impact fatigue fracture surface: the crack initiation zone, stable crack propagation zone, rapid crack propagation zone, and shear lip area. Notably, as impact energy rose, the crack propagation zone expanded, while the shear lip area contracted.These findings contribute significantly to understanding the fatigue behavior of A100 material under repeated impact conditions, critical for enhancing the durability and safety of carrier-based aircraft takeoff and landing devices.

• Periodical: Advances in Science and Technology (Volume 158)
• Pages: 33-42
• DOI: https://doi.org/10.4028/p-3EO2at
• Online since: January 2025
• Authors: Qiang Yang*, Chun Yu Bai, Bin Wen Wang
• Keywords: Damage Mechanism, Failure Characteristics, Impact Fatigue, Three-Point Bending

References

[1] GUO Yupei, WANG Binwen, YANG Qiang, et al. Research Progress and Prospect of Impact Fatigue of Aeronautical Materials[J]. Advances in Aeronautical Science and Engineering, 2020, 11(5): 609-617.

[2] Wang Binwen, Qian Chengcheng, Bai Chunyu, et al. Study on impact fatigue test and life prediction method of TC18 titanium alloy[J]. International Journal of Fatigue, 2023 (168) 107391. doi.org/.

DOI: 10.1016/j.ijfatigue.2022.107391

[3] Shi, S.H. & G.Y. Fu. Plastic Behavior of Laser Cladding Sample under Repeated-Impact Load[J]. Key Engineering Materials, 2010, 426-427:294-298.

DOI: 10.4028/www.scientific.net/kem.426-427.294

[4] Fu, G.Y. & S.H. Shi. A Mechanics Analysis of Formation and Expansion of Fatigue Crack in Laser Cladding on Repeated Impact Load. Key Engineering Materials, 2009, 329-394: 109-115.

DOI: 10.4028/www.scientific.net/kem.392-394.109

[5] Stanton, T.E. & Bairstow L. The resistance of materials to impact[J]. Proc Inst Mech Engrs, 1908(1): 889-919.

[6] Layland, E.L. How metals perform under repeated impact[J]. Mater Mech, 1956(44): 104-106.

[7] Wellinger, K. & Breckel. H. Kenngrӧssen and verschleiss beim stoss metallischerwerkstoffe[J]. Wear, 1969, 13(4-5): 257-281.

DOI: 10.1016/0043-1648(69)90249-x

[8] Toporov, G.V. & Gorbunov, V.F. Reasons for the selection of metals for drilling hammer parts. Izv. Tomsk. Polytech. Inst., Sverdlovsk, Metallurgizdat, 1959(108), 102-117.

[9] LI Song-mei, WU Ling-fei, LIU Jian-hua, et al. Effect of Load Ratio and Corrosion on Fatigue Behavior of AerMet100 Ultrahigh Strength Steel[J]. Journal of Aeronautical Materials, 2014, 34(3): 74-80.

[10] Ran, X. Z., et al. Microstructure characterization and mechanical behavior of laser additive manufactured ultrahigh-strength AerMet100 steel[J]. Materials Science & Engineering A, 2016. 663(Apr.29): 69-77.

DOI: 10.1016/j.msea.2016.03.051

[11] Ran, X.Z., et al. Effects of microstructures on the fatigue crack growth behavior of laser additive manufactured ultrahigh-strength AerMet100 steel[J]. Materials Science & Engineering A, 2018. 721(APR.4): 251-262.

DOI: 10.1016/j.msea.2018.02.088

[12] XU Shuai, GUO Chao, WU Haijun, et al. Experimental Study on Dynamic Compression and Shear Properties of Ultrahigh Strength Steel AerMet100[C]. The 11th National Conference on Impact Dynamics, 2013.

[13] RAN Gang, ZHANG Jianguo, WANG Hong, et al. Effect of Tensile Overloading on Impact Fatigue Properties of Ultra-high Strength Steel A-100[J]. Material & Heat Treatment, 2012. 41 (14): 94-96,101.

[14] Deeks A, Randolph M. Analytical modelling of hammer impact for pile driving[J]. International Journal for Numerical & Analytical Methods in Geomechanics. 2010,17(5): 279-302.

DOI: 10.1002/nag.1610170502