Ultrasound Velocity Measurements in High-Chromium Steel Under Plastic Deformation

All-Russia Scientific and Practical Conference on Materials Treatment: Current Problems and Solutions

Lunev, Aleksey^1,2 ; Bochkareva, Anna^1,2 ; Barannikova, Svetlana^1,3,4 ; Zuev, Lev^1,3

Institute of Strength Physics and Materials Science, SB RAS, 2/4 Akademicheskii Ave., Tomsk

634055, Russia^1

National Research Tomsk Polytechnic University, 30 Lenina ave., Tomsk

634050, Russia^2

National Research Tomsk State University, 36 Lenin Ave., Tomsk

634050, Russia^3

Tomsk State University of Architecture and Building, 2 Solyanaya Ave., Tomsk

634003, Russia^4

关键词: After high temperature;    Corrosion-resistant;    Deformation curves;    High-chromium steel;    Martensitic state;    Propagation velocities;    Ultrasonic surface wave;    Uniaxial tensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/125/1/012007/pdf
DOI  :  10.1088/1757-899X/125/1/012007

来源: IOP

【 摘 要 】

In the present study, the variation of the propagation velocity of ultrasound in the plastic deformation of corrosion-resistant high-chromium steel 40X13 with ferrite-carbide (delivery status), martensitic (quenched) and sorbitol (after high-temperature tempering) structures have beem studied/ It is found that each state shows its view of the loading curve. In the delivery state diagram loading is substantially parabolic throughout, while in the martensitic state contains only linear strain hardening step and in the sorbitol state the plastic flow curve is three-step. The velocity of ultrasonic surface waves (Rayleigh waves) was measured simultaneously with the registration of the loading curve in the investigated steel in tension. It is shown that the dependence of the velocity of ultrasound in active loading is determined by the law of plastic flow, that is, the staging of the corresponding diagram of loading. Structural state of the investigated steel is not only changing the type of the deformation curve under uniaxial tension, but also changes the nature of ultrasound speed of deformation.