Effect of Plastic Deformation on Longitudinal Elastic Wave Velocity in a Polycrystalline Aluminum Alloy as a Function of Temperature

The paper presents experimental investigation results concerning the effect of plastic strain on longitudinal elastic wave velocity as a function of temperature in the AMg6 Al-Mg alloy. We show that the temperature function is highly sensitive to plastic strain and microdamage. We developed an algorithm for computing the variation in the longitudinal wave velocity and the relative change of the elastic moduli in polycrystalline metallic alloys featuring a cubic crystal system depending on the temperature and microdamage accumulated during plastic deformation. We found out that accounting for the effect of plastic deformation on longitudinal elastic wave velocity as a function of temperature considerably reduces error in ultrasonic thickness gauging and fault localisation via ultrasonic testing

The study was performed in the Nizhny Novgorod State Technical University named after R.E. Alekseev and supported by the Ministry of Education and Science of the Russian Federation (project no. RFMEFI58017X0012)

References

[1] Callins J.A. Failure of Materials in Mechanical Design: Analysis, Prediction, Prevention. John Wiley & Sons, 1993. 654 р.

[2] Maksimovich G.G., ed. Prochnost deformirovannykh metallov [Strength of deformed metals]. Kiev, Naukova Dumka Publ., 1976. 274 p.

[3] Kobayashi T. Strength and toughness of materials. Springer, 2004. 275 p.

[4] Lemaitre J. A continuous damage mechanics model for ductile fracture. J. Eng. Mat. Tech., 1985, vol. 107, no. 1, pp. 83–89.

[5] Bell J.F. Mechanics of solids Vol. 1: The Experimental foundations of solid mechanics. Encyclopedia of Physics. Springer, 1973. 813 p.

[6] Salganik R.L. Mechanics of bodies with large number of cracks. Izvestiya AN SSSR. Mekhanika tverdogo tela, 1973, no. 4, pp. 149–158 (in Russ.).

[7] Wagh A.S., Poeppel R.B., Singh J.P. Open pore description of mechanical properties of ceramics. J. Mater. Sci., 1991, vol. 26, iss. 14, pp. 3862–3868. DOI: 10.1007/BF01184983

[8] Munro R.G. Analytical representations of elastic moduli data with simultaneous dependence on temperature and porosity. J. Res. Natl. Inst. Stand. Technol., 2004, vol. 109, no. 5, pp. 497–503. DOI: 10.6028/jres.109.036

[9] Badamshin I.Kh. Ot chetyrekh k odnomu. Sily vnutriatomnogo vzaimodeystviya i prochnost materialov [From four to one. Intraatomic interaction forces and strength of materials]. Moscow, Izdatelskiy dom Akademii Estestvoznaniya Publ., 2016. 134 p.

[10] Allen D.R., Sayers C.M. The measurement of residual stress in textured steel using an ultrasonic velocity combinations technique. Ultrasonics, 1984, vol. 22, iss. 4, pp. 179–188. DOI: 10.1016/0041-624X(84)90034-9

[11] Altman M.B., Elagin V.I., Kvasov F.I., Matveev B.I., Fridlyander I.N, ed. Promyshlennye alyuminievye splavy [Industrial aluminum alloys]. Moscow, Metallurgiya Publ., 1984. 528 p.