Strengthen Experimental Study of High Strength Steel 40CrNi2Si2MoVA Based on Laser Shock Processing

Abstract:

40CrNi2Si2MoVA high-strength steel is widely used in aircraft industry because of its unique combination of ultrahigh strength with high fracture toughness. However, 40CrNi2Si2MoVA is vulnerable to both corrosion fatigue and stress corrosion cracking failures with catastrophic consequences for aircraft. The high strength steel 40CrNi2Si2MoVA is enhanced and strengthen by usage of laser shock processing (LSP) with a optimal shock processing parameters, and after a series of comparion experiment in different overlap rate,the surface compressive residual stress in the testing specimen is measured and compared, and the experiment results show that the specimen surface has-962MPa compressive residual stress. Finally, the enhanced effect of compressive residual stress in surface of specimen by laser shock is discussed. The results of laser shock processing has a guiding significance to the engineering applications of high strength steel.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 1122-1126
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.1122
• Online since: September 2013
• Authors: Yong Hua Wu
• Keywords: Compressive Residual Stress, High Strength Steel (HSS), Laser Shock Processing

References

[1] A.K. Nath. High Power Laser in Material Processing Applications: An Overview of Recent Developments[J]. Laser-Assisted Fabrication of Materials. 2013: 69-86.

DOI: 10.1007/978-3-642-28359-8_2

[2] B. S. Yilbas,S. B. Mansoor & A. F. Arif. Laser shock processing: modeling of evaporation and pressure field developed in the laser-produced cavity[J]. Int J Adv Manu-Technol. 2009(42): 250–262.

DOI: 10.1007/s00170-008-1601-7

[3] Abul Fazal M. Arif. Effect of input variability on the quality of laser shock processing[J]. Journal of Mechanical Science and Technology , 2009. ( 23) 10, 2603-2611.

DOI: 10.1007/s12206-009-0507-0

[4] A. H. Clauer and H. J. Holbrook, Effects of Laser Induced Shock Waves on Metals, Shock Waves and High Strain Phenomena in Metals-Concepts and Applications, Plenum, New York, USA. (1981) 675–702.

DOI: 10.1007/978-1-4613-3219-0_38

[5] A. F. M. Arif, Numerical prediction of plastic deformation and residual stresses induced by Laser Shock Processing, J. of Materials Processing Technology, 136 (2003) 120-138.

DOI: 10.1016/s0924-0136(02)01122-6

[6] L. Berthe, R. Fabbro, P. Peyre, L. Tollier and E. Bartnicki, Shock waves from a water-confined laser generated plasma, J. Appl. Phys., 82 (6) (1997) 2826-2832.

DOI: 10.1063/1.366113

[7] B. S. Yilbas, A. F. M. Arif, S. Z. Shuja, M. A. Gondal and J. Shrikof, Investigation into Laser Shock Processing, J. of Materials Engineering and Performance, 13 (2004) 47-54.

DOI: 10.1361/10599490417623

[8] B. S. Yilbas, A. F. M. Arif and M. A. Gondal, Plastic Deformation of Steel Surface Due to Laser Shock Processing, Proc. Instn Mech Engrs Part B (Journal of Engineering Manufacture), 220 (2006) 857-867.

DOI: 10.1243/09544054jem311

[9] B. S. Yilbas and A. F. M. Arif, Laser-Shock Processing of Aluminum: Model and Experimental Study, Journal of Physics D: Applied Physics, 40 (2007) 6740-6747.

DOI: 10.1088/0022-3727/40/21/038

[10] W. Zhang and Y. L. Yao, Micro Scale Laser Shock Processing of Metallic Components, ASME J. Mfg. Sc. and Eng. 124 (2002) 369-378.

DOI: 10.1115/1.1445149