Metallurgical Transactions A

, Volume 10, Issue 4, pp 433–438 | Cite as

Constant modulus alloys for mechanical oscillators

  • Wolfgang Schneider
  • Hans Thomas
Mechanical Behavior


A survey is given of the origins of constant modulus behavior in certain ferro- and antiferromagnetic alloys. All contributions to the modulus anomaly (ΔΕ) result from magnetic ordering. In the Fe-Ni system various influences are studied in detail; Ternary alloying elements, precipitation hardening process, cold reduction and final thermal treatment. The thermoelastic properties of a technical constant modulus alloy were investigated in magnetic dc fields up to 300 A/cm for various vibrational modes; the influence of the skin-effect was detected forf > 30 kHz. Some dynamic applications (e.g. electromechanical filters, frequency standards, delay lines) are described.


Metallurgical Transaction Cold Reduction Constant Modulus Modulus Defect Modulus Anomaly 
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Copyright information

© American Society For Metals And The Metallurgical Society of AIME 1979

Authors and Affiliations

  • Wolfgang Schneider
    • 1
  • Hans Thomas
    • 1
  1. 1.Research and Development DepartmentVACUUMSCHMELZE GMBHHanauWest Germany

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