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A Comparison of Strain Measurements on an Inertia Friction Weld Using the ENGIN-X and SALSA Neutron Strain Mapping Instruments

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Abstract:

In this study we present a direct comparison between residual strain measurements carried out on the same inertia friction weld using ENGIN-X at ISIS, UK and the new strain scanner SALSA at ILL, France. ENGIN-X is a time of flight (TOF) instrument, which receives neutrons from a neutron spallation source, while the SALSA Strain-Imager, a high resolution diffractometer, is based at a research reactor source with a continuous neutron flux and is operated with a constant wavelength. The purpose of this study was to demonstrate a confidence in crosscomparing future strain measurements to be performed at ENGIN-X and SALSA. Measurements were carried out on medium size inertia friction welded nickel superalloy test-piece, which show no significant crystallographic texture across the weld line. The results demonstrate that, even though residual stresses determined on SALSA only rely on a single peak analysis (in this case the (111) reflection), the results show excellent agreement with the measurements carried out on ENGIN-X, where strain is determined from multi-peak Rietveld analysis.

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Periodical:

Materials Science Forum (Volumes 524-525)

Pages:

393-398

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.524-525.393

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Online since:

September 2006

Authors:

M. Karadge, Benedict M.B. Grant, Giovanni Bruno, Javier R. Santisteban, Philip J. Withers, Michael Preuss

Keywords:

ENGIN-X, SALSA, Strain Measurement

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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