Abstract
This paper presents some investigations on the effect of processing parameters on the emission of electromagnetic radiation (EMR) during plastic deformation and crack propagation in copper-zinc alloys. Timing of the EMR emissions, maximum stress during crack instability, stress-intensity factor, elastic strain energy release rate, maximum EMR amplitude, RMS value of EMR amplitude, EMR frequency and electromagnetic energy release rate were analysed for the effect of rolling directions at different percentage of zinc content in Cu-Zn alloy specimens. The same parameters were also analysed for 68-32 Cu-Zn alloy specimens at different annealing temperatures and at different angles ϑ, to the rolling direction. EMR emissions are observed to be highly anisotropic in nature. At ϑ=45° to 60°, marked changes in mechanical and electromagnetic parameters were observed. Specimens annealed at 500 °C, just above the recrystallization temperature, and at 700 °C, when grain-size growth is rapid, EMR responses have been found to have well-defined patterns.
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References
Barrett, C.S., 1952. Structure of Metals, Mc-Graw Hill Book Company, New York, p.521–523.
Callister, W.D.Jr., 2004. Materials Science and Engineering: An Introduction. John Wiley & Sons (Asia) Pte. Ltd., Singapore, p.183–184.
Haykin, S., van Veen, B., 2002. Signals and Systems. John Wiley, Singapore.
Hertzberg, R.W., 1996. Deformation and Fracture Mechanics of Engineering Materials. John Wiley & Sons, New York, p.321–336.
Jagasivamani, V., 1987. Some Studies on Electromagnetic and Acoustic Emission Associated with Deformation and Fracture of Metallic Materials. Ph.D Thesis, Indian Institute of Technology, Chennai, India.
Jagasivamani, V., Iyer, K.J., 1988. Electromagnetic emission during the fracture of heat treated spring steel. Materials Letters, 6(11–12):418–422. [doi:10.1016/0167-577X(88)90043-2]
Kumar, R., Misra, A., 2006. A New Approach for Smart Sensors in Design against Metallic Failure. Proceedings of the International Conference on Resource Utilisation and Intelligent Systems, Erode, India, p.565–569.
Mishra, D., Misra, A., 1980. Stress-induced electromagnetic effect—A new biophysical application to head injury. Neurology India, XXVIII:234–241.
Misra, A., 1973. On the magnetism produced in unmagnetized iron specimens at breakage under tension. Indian Journal of Pure and Applied Physics, 11:419–422.
Misra, A., 1975a. Electromagnetic effects at metallic fracture. Nature, 254(5496):133–134. [doi:10.1038/254133a0]
Misra, A., 1975b. Ninth Yearbook to the Encyclopedia of Science and Technology, Edizioni Scientifiche E Tecniche, Mondadori, Italy.
Misra, A., 1976. Discovery of Stress-induced Magnetic and Electromagnetic Effects in Metals. D.Sc. Thesis, Ranchi University.
Misra, A., 1977. Theoretical study of the fracture-induced magnetic effect in ferromagnetic materials. Physics Letters, 62A:234–236.
Misra, A., 1978. A physical model for the stress-induced electromagnetic effect in metals. Applied Physics, 16:195–199. [doi:10.1007/BF00930387]
Misra, A., 1981. Stress-induced magnetic and electromagnetic effects in metals. Journal of Scientific and Industrial Research, 40:22–23.
Misra, A., Ghosh, S., 1980a. Electron plasma model for the electromagnetic effect at metallic fracture. Indian Journal of Pure and Applied Physics, 18:851–856.
Misra, A., Ghosh, S., 1980b. electromagnetic radiation characteristics during fatigue crack propagation and fracture. Applied Physics, 23(4):387–390. [doi:10.1007/BF00903221]
Misra, A., Varshney, B.G., 1990. Can a stress alone applied to a demagnetized ferromagnetic specimen produce any magnetization. Journal of Magnetism and Magnetic Materials, 89(1–2):159–165. [doi:10.1016/0304-8853(90)90720-B]
Misra, A., Kumar, A., 2004. Some basic aspects of electromagnetic radiation during crack propagation in metals. International Journal of Fracture, 127(4):387–401. [doi:10.1023/B:FRAC.0000037676.32062.cb]
Molotskii, M.I., 1980. Dislocation mechanism for the Misra effect. Soviet Technical Physics Letters, 6:22–23.
Smith, W.F., 1981. Structure and Properties of Engineering Alloys. Mc-Graw Hill, New York.
Srilakshmi, B., Misra, A., 2005a. Secondary electromagnetic radiation during plastic deformation and crack propagation in uncoated and tin-coated plain-carbon steel. Journal of Materials Science, 40(23):6079–6086. [doi:10.1007/s10853-005-1293-4]
Srilakshmi, B., Misra, A., 2005b. Electromagnetic radiation during opening and shearing modes of fracture in commercially pure aluminum at elevated temperature. Materials Science and Engineering A, 404(1–2):99–107. [doi:10.1016/j.msea.2005.05.100]
Srilakshmi, B., Misra, A., 2005c. Effects of some fracture mechanics parameters on the emission of electromagnetic radiation from commercially pure aluminum. Manufacturing Technology and Research—An International Journal, 1:97–104.
Srilakshmi, B., Misra, A., 2005d. Electromagnetic Radiation during Crack Propagation in Metals—A New Trend in the Development of Smart Materials. Proceedings of International Symposium on Smart Materials and Systems, Chennai, India, p.219–229.
Tudik, A.A., Valuev, N.P., 1980. Electromagnetic emission during the fracture of metals. Soviet Technical Physics Letters, 6:37–38.
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Kumar, R., Misra, A. Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys. J. Zhejiang Univ. - Sci. A 7, 1800–1809 (2006). https://doi.org/10.1631/jzus.2006.A1800
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DOI: https://doi.org/10.1631/jzus.2006.A1800