Metallurgical and Materials Transactions B

, Volume 3, Issue 7, pp 1973–1978 | Cite as

Ultrasonic velocity measurement of elastic constants of Al-Al3Ni unidirectionally solidified eutectic

  • John V. Grabel
  • James R. Cost
Mechanical Behavior
First Online:
Received:

Abstract

Ultrasonic velocity measurements have been made to determine the dynamic elastic stiffness constants of a eutectic of unidirectional Al3Ni fibers in an α-aluminum matrix. These stiffness constants, in units of 1010 dyne/cm2, are: C33 = 132.6, C22 = C11 = 122.3, C23 = C13 = 66.5, C12 = 65.3, and C44 = 28.4, where the subscript 3 refers to the fiber direction. The experimental results indicate that the pulse-echo-overlap method can be used to determine the velocity of sound waves in a unidirectional fiber composite, and thus offers a simple and accurate method for fully describing the elastic properties of this type of material. Good agreement is found with previously reported values of Young’s modulus obtained by static tests. Engineering estimates of the elastic properties of Al3Ni are given.

Keywords

Longitudinal Wave Fiber Orientation Ultrasonic Velocity Metallurgical Transaction Volume Fiber Direction 
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Copyright information

© The Metallurgical of Society of AIME 1972

Authors and Affiliations

  • John V. Grabel
    • 1
  • James R. Cost
    • 2
  1. 1.Caterpillar Tractor Co.Peoria
  2. 2.School of Materials Science and Metallurgical EngineeringPurdue UniversityUSA

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