Laser Shock Processing of Ni-Base Superalloy and High Cycle Fatigue Properties

L. Zhou; Y.H. Li; W.F. He; X.D. Wang; Q.P. Li

doi:10.4028/www.scientific.net/MSF.697-698.235

Paper Titles

The Research on Milling Forces of Dry Cutting Spiral Bevel Gears
p.213

Analysis on Milling Performance of 2024-T351 Aluminum Alloy Using TiAlN Coated Carbide Cutting Tools
p.218

Numerical Solution of Tuned Mass Dampers for Optimum Milling Chatter Suppression
p.223

Measurement Error Analysis of Spindle Thermal Deformation
p.229

Laser Shock Processing of Ni-Base Superalloy and High Cycle Fatigue Properties
p.235

Linear Motor Velocity and Acceleration Motion Control Study Based on PID+Velocity and Acceleration Feedforward Parameters Adjustment
p.239

Machining of Free-Form Surface Method and Implementation Research with Ball-End Cutter
p.244

The Research and Application of Multi-Point and Time-Sharing Measurement Method on NC Machine Tool
p.249

Optimization Method of Machining Center Multi-Joint Stiffness Based on Orthogonal Experiment and FEA
p.253

HomeMaterials Science ForumMaterials Science Forum Vols. 697-698Laser Shock Processing of Ni-Base Superalloy and...

Laser Shock Processing of Ni-Base Superalloy and High Cycle Fatigue Properties

Abstract:

A plasma sound wave detection method of laser shock processing (LSP) technology is proposed. Speciments of Ni-base superalloy are used in this paper. A convergent lens is used to deliver 1.2 J, 10 ns laser pulses by a Q-switch Nd:YAG laser, operating at 1 Hz. The influence of the laser density to the shock wave is investigated in detail for two different wavelength lasers. Constant amplitude fatigue data are generated in room environment using notch specimens tested at an amplitude of vibration 2.8 mm and first-order flextensional mode. The results show that LSP is an effective surface treatment technique for improving the high cycle fatigue performance of Ni-base superalloys having a factor of 1.62 improvement in fatigue life.