Communications - Scientific Letters of the University of Zilina 2003, 5(2):41-43 | DOI: 10.26552/com.C.2003.2.41-43

Ultrasonic Investigation of Plastically Deformed Steel-Contribution to Analysis of Degradation Influence

Peter Bury1, S. Barta2, V. Magula2, V. Slugen2, T. Smida3
1 Department of Physics, Faculty of Electrical Engineering, Zilina University, Slovakia
2 Department of Physics, Faculty of Electroengineering and Informatics, Slovak Technical University, Bratislava, Slovakia
3 3Welding Research Institute, Bratislava, Slovakia

Study of degradation influence on material properties of some steel components is very important because of their serviceable life. One of the most important side of the degradation process considering operation conditions is cumulated plastic deformation. The ultrasonic investigation of materials through the ultrasound attenuation and velocity measurements have been proved an effective tool of the study of structural changes caused also by plastic deformation due to the degradation process. In the contribution we present the results of both the frequency dependence of ultrasound attenuation and velocity measurements of steel samples (38ChN3MFA) with different relative plastic deformation (0, 1.5, 3 and 6 %). The results are compared also with the measurements obtained by some other techniques, including the measurement of electrical conductivity, and the rate of positron-electron annihilation and breakage toughness.

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Published: June 30, 2003  Show citation

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Bury, P., Barta, S., Magula, V., Slugen, V., & Smida, T. (2003). Ultrasonic Investigation of Plastically Deformed Steel-Contribution to Analysis of Degradation Influence. Communications - Scientific Letters of the University of Zilina, 5(2), 41-43. doi: 10.26552/com.C.2003.2.41-43
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    References

    1. MASON, W. P.: Physical Acoustics, Vol. IV, Academic Press, 1966
    2. PAPADAKIS, E. P.: Ultrasonic Instruments and Devices, Academic Press, 2001
    3. TRUEL, R., ELBAUM, CH., CHICK, B. B.: Ultrasonic Methods in Solid State Physics, Academic Press, 1969
    4. HAMÁK, I., et. al.: Residual lifetime of girders M 140 after long-time operation, Order No. 222/2167 VÚZ Bratislava, September 2000

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