Fatigue damage evaluation of austenitic stainless steel using nonlinear ultrasonic waves in low cycle regime

Journal Article · Wed May 28 04:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4879415· OSTI ID:22304358

Zhang, Jianfeng; Xuan, Fu-Zhen ^[1]

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1. MOE Key Laboratory of Pressurized System and Safety, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237 (China)

The interrupted low cycle fatigue test of austenitic stainless steel was conducted and the dislocation structure and fatigue damage was evaluated subsequently by using both transmission electron microscope and nonlinear ultrasonic wave techniques. A “mountain shape” correlation between the nonlinear acoustic parameter and the fatigue life fraction was achieved. This was ascribed to the generation and evolution of planar dislocation structure and nonplanar dislocation structure such as veins, walls, and cells. The “mountain shape” correlation was interpreted successfully by the combined contribution of dislocation monopole and dipole with an internal-stress dependent term of acoustic nonlinearity.

• OSTI ID: 22304358
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 20 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AUSTENITIC STEELS
CORRELATIONS
DAMAGE
DIPOLES
DISLOCATIONS
EVOLUTION
FATIGUE
NONLINEAR PROBLEMS
RESIDUAL STRESSES
SIMULATION
TRANSMISSION ELECTRON MICROSCOPY
ULTRASONIC WAVES