The Influence of Temperature and Strain Rate on the Strength Characteristics of Metallic Materials

Authors

  • L. Kyzioł Akademia Morska w Gdyni, Morska 81-87, 81-225 Gdynia, Wydział Mechaniczny, Katedra Podstaw Techniki

Keywords:

strain of materials, strain rate, mechanical threshold stress, strengthening materials

Abstract

The article presents the difference between the quasi-static and dynamic strain of metallic materials. At the high strain rate, stress (strain) in metallic materials moves with specified velocities as a wave. The dynamic deformation is related to the propagation of the wave while the static deformation can be seen as temporary states of equilibrium. At small speed deformations, the body remains in isothermal conditions, while the dynamic strain processes are the adiabatic processes. The concept of the mechanical threshold stress ?^ has been introduced, which is the maximum stress value for the particular type of metallic material for 0 K or, equivalently, infinitely high speed deformation. With the decrease of the temperature, there is a reduction of the dislocation mobility. This phenomenon is associated with a decrease in mobility of atoms in the network at reduced temperatures, which vibrating movement completely stops at 0 K. The concept of the mechanical threshold stress has been illustrated using the calculation example.

References

Ciszewski, B., Przetakiewicz, W., 1993, Nowoczesne materiały w technice, Wydawnictwo Bellona, Warszawa.

[2] Cudny, K., Powierża, Z., 1978, Wybrane zagadnienia odporności udarowej, WSMW w Gdyni, Gdynia.

[3] Dieter, G.E., 1986, Mechanical Metallurgy, McGraw-Hill.

[4] Fila, J., 1993, Badania wpływu stanu obciążeń i szybkości odkształceń na wytrzymałość i ciągliwość materiałów okrętowych, Konferencja „Odporność udarowa konstrukcji”, AMW w Gdyni, Gdynia, s. 246–257.

[5] Follansbee, P.S., 2014, Fundamentals of Strength, Wiley, New Jersey.

[6] Griffkins, R.C., 1976, Metall. Trans., 7A. 12.25.

[7] Jackiewicz, J., 2012, Modelowanie rozwoju uszkodzeń i pękania zachodzącego w stalowych elementach zbiorników kriogenicznych, Uniwersytet Technologiczno-Przyrodniczy im. J. Śniadeckich w Bydgoszczy, Rozprawy nr 154, Bydgoszcz.

[8] Komarovsky, A.A., Astakhov, V.P., 2002, Physics of Strength and Fracture Control: Fundamentals of the Adaptation of Engineering Materials and Structures, CRC Press Boca Raton.

[9] Kurzydłowski, K.J., 1993, Mechanika materiałów, Wydawnictwo Politechniki Warszawskiej, Warszawa.

[10] Kyzioł, L., Garbacz, G., 2014, Zależność wytrzymałości stali austenitycznej 0H18N9S od szybkości odkształcenia, Logistyka, nr 6, s. 6520–6528.

[11] Liang, R., Khan, A.S, 1999, A Critical Review of Experimental Results and Constitutive Models for BCC and FCC Metals Over a Wide Range of Strain Rates and Temperatures, International Journal of Plasticity, vol. 15.

[12] Meyers, M.A, 1994, Dynamic Behavior of Materials, John Wiley & Sons, Inc. New York.

[13] Muszka, K., Majta, J., Śleboda, T., Stefańska-Kądziela, M., 2004, Comparison of the Mechanical Response of HSLA Steel Deformed under Static and Dynamic Loading Conditions, Proceedings of the 10th International Conference on Metal Forming, Akademia Górniczo-Hutnicza w Krakowie, Steel-Grips 2, Suppl. Metal Forming 747.

[14] Tanaka, K., Nojima, T., 1979, Dynamic and Static Strength of Steels, Proceedings of the Second Conference on the Mechanical Properties of Materials at High Rates of Strain, Oxford.

[15] Yan, B., Xu, K., 2002, High Strain Rate Behavior of Advanced High Strength Steels for Automotive Industry, Proceedings of 44th MWSP Conference, Orlando, vol. XL 493.

[16] Zukas, J.A., 1991, High Velocity Impact Dynamics, New York – Toronto – Singapore.

[17] https://www.google.pl/?gfe_rd=cr&ei=iWghVb2FCsqG8Qejy4DgBQ&gws_rd=ssl#q=WPŁy w dynamicznych warunkÓw odksztaŁcania na pŁyniĘcie pla styczne metali.

[18] https://www.google.pl/?gfe_rd=cr&ei=oSAhVdKH8uG8QeGoIHQCA&gws_rd=ssl#q=Modelowanie rozwoju uszkodzeń i pękania zachodzącego w stalowych elemen tach zbiorników kriogenicznych.

[19] http://www.tmpm.agh.edu.pl/ppp/udar-teoria.pdf.

Published

2017-06-30

How to Cite

Kyzioł, L. (2017). The Influence of Temperature and Strain Rate on the Strength Characteristics of Metallic Materials. Scientific Journal of Gdynia Maritime University, (100), 109–119. Retrieved from https://sjgmu.umg.edu.pl/index.php/sjgmu/article/view/182

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Section

Articles