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Ultrasonics. 2017 Jul;78:30-39. doi: 10.1016/j.ultras.2017.02.016. Epub 2017 Feb 24.

Texture in steel plates revealed by laser ultrasonic surface acoustic waves velocity dispersion analysis.

Ultrasonics

Anmin Yin, Xiaochen Wang, Christ Glorieux, Quan Yang, Feng Dong, Fei He, Yanlong Wang, Jan Sermeus, Tom Van der Donck, Xuedao Shu

Affiliations

  1. Department of Mechanical Engineering, Faculty of Mechanical Engineering & Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China. Electronic address: [email protected].
  2. National Engineering Research Center of Flat Rolling Equipment, University of Science & Technology Beijing, Beijing 100083, China.
  3. Laboratory Acoustics, Soft Matter and Biophysics, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, B3001 Heverlee, Belgium.
  4. Department of Metallurgy and Materials Engineering, K.U. Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium.
  5. Department of Mechanical Engineering, Faculty of Mechanical Engineering & Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China.

PMID: 28282636 DOI: 10.1016/j.ultras.2017.02.016

Abstract

A photoacoustic, laser ultrasonics based approach in an Impulsive Stimulated Scattering (ISS) implementation was used to investigate the texture in polycrystalline metal plates. The angular dependence of the 'polycrystalline' surface acoustic wave (SAW) velocity measured along regions containing many grains was experimentally determined and compared with simulated results that were based on the angular dependence of the 'single grain' SAW velocity within single grains and the grain orientation distribution. The polycrystalline SAW velocities turn out to vary with texture. The SAW velocities and their angular variations for {110} texture were found to be larger than that the ones for {111} texture or the strong γ fiber texture. The SAW velocities for {001} texture were larger than for {111} texture, but with almost the same angular dependence. The results infer the feasibility to apply angular SAW angular dispersion measurements by laser ultrasonics for on-line texture monitoring.

Copyright © 2017 Elsevier B.V. All rights reserved.

Keywords: Laser ultrasonics; Surface acoustic waves; Texture

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