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A Study of Internal Friction, Electric Resistance and Shape Change in Cu-Zn and Cu-Zn-Al Alloys During Phase Transformation Use Simultaneous Measurement Method

  • Yuan-Ti Huang
  • Tian-Fei Wang
  • Yin Mei
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

The internal friction (Q-1), electric resistance (r), shape change (X), and temperature (T) in TiNi alloys during phase transformation have been measured simultaneously [1]. A. Ghilarducci and, M. Ahlers [2] have studied the internal friction in Cu-Zn and Cu-Zn-Al alloys and have shown that the Q-1 peaks are not due to the phase transformation but due to point defects. The electric resistance during thermoelastic martensite (TEM) phase transformation has been studied by K. Otsuka, et.al, [3] and I. Cornelis and, C. M. Wayman showed that the TEM phase transformation temperature Ms, Mf, As and Af can be obtained from the electric resistance R vs. temperature T curves (R-T curve) [4]. The quantitative relation between the electric resistance change and the amount of martensite is not yet known. Now, the Q-1, R, X, frequency f and T during TEM transformation in Cu-Zn and Cu-Zn-Al alloys have been measured simultaneously as has been done in a TiNi alloy [1,5]. The amount of martensite at every temperature from Ms to Mf and As to Af was calculated by Delorme’s formula of internal friction [6], so that the change of R can be calculated.

Keywords

Phase Transformation Phase Boundary Internal Friction Shape Change Nondestructive Evaluation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Yuan-Ti Huang, Guo-Ping Yang, Ping He, Scripta Met. V19, 9 (1985) 1033, 1089.Google Scholar
  2. A. Ghilarducci, M. Ahlers, J. Phys. F: Met. Phys. 13 (1983) 1757.Google Scholar
  3. 3.
    K. Otsuka, et.al, Scripta Met. Vol. 6, (1972) 377.CrossRefGoogle Scholar
  4. 4.
    I. Cornelis, C. M. Wayman, Scripta Met. Vol. 10, 359 (1976).CrossRefGoogle Scholar
  5. 5.
    Nai-Yi Chui, Yuan-Ti Huang, Scripta Met. Vol. 21, 4 (1987) 447.CrossRefGoogle Scholar
  6. 6.
    J. F. Delorme, R. Schmid, M. Robin, P. Gobin, J. Phys. Vol. 32, C2–101 (1971).Google Scholar
  7. 7.
    T. A. Schroeder, C. M. Wayman, Acta Met. Vol. 25, 1375 (1977).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Yuan-Ti Huang
    • 1
  • Tian-Fei Wang
    • 1
  • Yin Mei
    • 1
  1. 1.Department of PhysicsBeijing University of Science and TechnologyBeijingP.R.O. China

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