Journal of Zhejiang University-SCIENCE A

, Volume 7, Issue 11, pp 1800–1809 | Cite as

Effect of processing parameters on the electromagnetic radiation emission during plastic deformation and crack propagation in copper-zinc alloys

Article

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.

Key words

Radiation Plastic deformation Rolling direction Annealing Fracture 

CLC number

TG139.7 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Barrett, C.S., 1952. Structure of Metals, Mc-Graw Hill Book Company, New York, p.521–523.Google Scholar
  2. Callister, W.D.Jr., 2004. Materials Science and Engineering: An Introduction. John Wiley & Sons (Asia) Pte. Ltd., Singapore, p.183–184.Google Scholar
  3. Haykin, S., van Veen, B., 2002. Signals and Systems. John Wiley, Singapore.MATHGoogle Scholar
  4. Hertzberg, R.W., 1996. Deformation and Fracture Mechanics of Engineering Materials. John Wiley & Sons, New York, p.321–336.Google Scholar
  5. 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.Google Scholar
  6. 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]CrossRefGoogle Scholar
  7. 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.Google Scholar
  8. Mishra, D., Misra, A., 1980. Stress-induced electromagnetic effect—A new biophysical application to head injury. Neurology India, XXVIII:234–241.Google Scholar
  9. 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.Google Scholar
  10. Misra, A., 1975a. Electromagnetic effects at metallic fracture. Nature, 254(5496):133–134. [doi:10.1038/254133a0]CrossRefGoogle Scholar
  11. Misra, A., 1975b. Ninth Yearbook to the Encyclopedia of Science and Technology, Edizioni Scientifiche E Tecniche, Mondadori, Italy.Google Scholar
  12. Misra, A., 1976. Discovery of Stress-induced Magnetic and Electromagnetic Effects in Metals. D.Sc. Thesis, Ranchi University.Google Scholar
  13. Misra, A., 1977. Theoretical study of the fracture-induced magnetic effect in ferromagnetic materials. Physics Letters, 62A:234–236.CrossRefGoogle Scholar
  14. Misra, A., 1978. A physical model for the stress-induced electromagnetic effect in metals. Applied Physics, 16:195–199. [doi:10.1007/BF00930387]CrossRefGoogle Scholar
  15. Misra, A., 1981. Stress-induced magnetic and electromagnetic effects in metals. Journal of Scientific and Industrial Research, 40:22–23.Google Scholar
  16. 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.Google Scholar
  17. Misra, A., Ghosh, S., 1980b. electromagnetic radiation characteristics during fatigue crack propagation and fracture. Applied Physics, 23(4):387–390. [doi:10.1007/BF00903221]CrossRefGoogle Scholar
  18. 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]CrossRefGoogle Scholar
  19. 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]CrossRefGoogle Scholar
  20. Molotskii, M.I., 1980. Dislocation mechanism for the Misra effect. Soviet Technical Physics Letters, 6:22–23.Google Scholar
  21. Smith, W.F., 1981. Structure and Properties of Engineering Alloys. Mc-Graw Hill, New York.Google Scholar
  22. 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]CrossRefGoogle Scholar
  23. 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]CrossRefGoogle Scholar
  24. 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.Google Scholar
  25. 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.Google Scholar
  26. Tudik, A.A., Valuev, N.P., 1980. Electromagnetic emission during the fracture of metals. Soviet Technical Physics Letters, 6:37–38.Google Scholar

Copyright information

© Zhejiang University 2006

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringBirla Institute of Technology, MesraRanchiIndia

Personalised recommendations