MATEC Web Conf.
Volume 224, 2018International Conference on Modern Trends in Manufacturing Technologies and Equipment (ICMTMTE 2018)
|Number of page(s)||6|
|Section||General problems of mechanical engineering: design, optimization, maintenance|
|Published online||30 October 2018|
Thermo-ultrasound method for determining the damage of structural material
Mechanical Engineering Research Institute of RAS - branch of the “Federal Research Center The Institute of Applied Physics of the RAS”, 85, Belinskogo str., Nizhny Novgorod, 603024, Russian Federation.
* Corresponding author: email@example.com
The effect of plastic strain and temperature on the longitudinal and shear waves velocity of austenitic stainless steel 12Kh18N10T (analogue AISI 321) is investigated. Cryogenic corrosion-resistant austenitic steel 12Kh18N10T is interesting due to the fact, that during plastic deformation a martensitic phase is formed. The martensitic phase significantly changes the electromagnetic, elastic and strength properties of the entire material. The formation of a new phase in conjunction with the process of plastic deformation has a significant effect on the temperature dependence of the elastic wave velocity. As a result of the studies, numerical values of the temperature-velocity factor for longitudinal and shear ultrasonic waves in steel 12Kh18N10T were obtained. The relationship between changes of the magnetic phase and temperature-velocity factor is suggested; it can be used for determining the material damage by the ultrasound method.
© The Authors, published by EDP Sciences, 2018
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