Determination of crystallographic orientation of large grain metals with surface acoustic waves

Wenqi Li; Steve D Sharples; Richard J Smith; Matt Clark; Michael G Somekh

doi:10.1121/1.4731226

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Determination of crystallographic orientation of large grain metals with surface acoustic waves

Journal article

Open access

Peer reviewed

Determination of crystallographic orientation of large grain metals with surface acoustic waves

Wenqi Li, Steve D Sharples, Richard J Smith, Matt Clark and Michael G Somekh

The Journal of the Acoustical Society of America, Vol.132(2), pp.738-745

08/2012

DOI: 10.1121/1.4731226

PMID: 22894196

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https://nottingham-repository.worktribe.com/output/3156906View

Open Access

Abstract

A previously described laser ultrasonic technique known as spatially resolved acoustic spectroscopy (SRAS) can be used to image surface microstructure, using the local surface acoustic wave (SAW) velocity as a contrast mechanism. It is shown here that measuring the SAW velocity in multiple directions can be used to determine the crystallographic orientation of grains. The orientations are determined by fitting experimentally measured velocities to theoretical velocities. Using this technique the orientations of 12 nickel and 3 aluminum single crystal samples have been measured, and these are compared with x-ray Laue backreflection (LBR) measurements with good agreement. The root mean square difference between SRAS and LBR measurements in terms of an R-value is less than 4.1°. The influence of systematic errors in the SAW velocity determination due to instrument miscalibration, which affects the accurate determination of the planes, is discussed. SRAS has great potential for complementary measurements or even for replacing established orientation determination and imaging techniques.

Motion

Reproducibility of Results

Aluminum - chemistry

Models, Chemical

Nickel - chemistry

Elasticity

Crystallography, X-Ray

Calibration

Spectrum Analysis - standards

Spectrum Analysis - instrumentation

Lasers

Surface Properties

Ultrasonics - instrumentation

Molecular Structure

Crystallography - instrumentation

Ultrasonics - standards

Crystallography - standards

Details

Title: Subtitle: Determination of crystallographic orientation of large grain metals with surface acoustic waves
Creators: Wenqi Li - Electrical Systems and Optics Research Division, Faculty of Engineering, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
Steve D Sharples
Richard J Smith
Matt Clark
Michael G Somekh
Resource Type: Journal article
Publication Details: The Journal of the Acoustical Society of America, Vol.132(2), pp.738-745
DOI: 10.1121/1.4731226
PMID: 22894196
NLM abbreviation: J Acoust Soc Am
ISSN: 0001-4966
eISSN: 1520-8524
Publisher: American Institute of Physics; United States
Language: English
Date published: 08/2012
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Molecular Physiology and Biophysics; Anatomy and Cell Biology; Stead Family Department of Pediatrics; Iowa Neuroscience Institute; Otolaryngology; Internal Medicine
Record Identifier: 9984006489902771

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