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Effects of Ti-6A1-4V Alloy Metallurgical Structures on Ultrasonic Response Characteristics

  • F. R. Billman
  • F. F. Rudolph

Abstract

Use of titanium is increasing for large asymmetrical airframe structural forgings that frequently require billets with crosssectional dimensions of 16 inches and. larger. Ultrasonic transmission losses and noise levels in titanium are significantly higher than in aluminum and steel alloys previously used in airframe applications. Therefore, sensitivity for flaw detection decreases dramatically as billet sizes and finished part section-thicknesses increase. To meet the demand for improved inspectability, much effort has been directed toward the development of more sensitive instrumentation and inspection techniques. Concurrent with these developments, Alcoa has investigated the effects of macrostructure, microstructure and subtransus deformation on the ultrasonic inspectability of titanium alloy billet and aerospace forgings in an effort to optimize ultrasonic transmission characteristics of the material.

Keywords

Metal Distance Reference Block Ultrasonic Inspectability Back Reflection Ultrasonic Transmission 
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.
    G. K. Turnbull, T. B. Gurganus, “Microstructural Control of Ti-6A1–4V Alloy Forgings”, submitted for publication in May issue Metals Engr. Qtr. 1972.Google Scholar
  2. 2.
    W. P. Mason, Physical Acoustics and the Properties of Solids, Van Nostrand, New York, 1958, Vol. I, Part B, pp. 32–55.Google Scholar
  3. 3.
    Malecki, I., Physical Foundations of Technical Acoustics, Polish Scientific Publishers, Warszawa, Translated by Irene Bellert, Chapter 8, pp. 323–374.Google Scholar

Copyright information

© Springer Science+Business Media New York 1973

Authors and Affiliations

  • F. R. Billman
    • 1
  • F. F. Rudolph
    • 1
  1. 1.Alcoa Technical CenterPittsburghUSA

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