Inline measurements of texture and recrystallization on aluminum alloys

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Proceedings titleProceedings of the World Conference on Nondestructive Testing 2004
Conference16th World Conference on Nondestructive Testing, August 30-September 3 2004, Montreal Canada
AbstractThe recrystallization of hot-rolled aluminum strips was monitored inline after inline annealing at Commonwealth Aluminum Corporation (CAC) using-laser ultrasonics. The non-contact measurement is based on sensing the ratio of the compressional to the shear sound velocity in the strip thickness direction. This ratio is insensitive to strip thickness variations and varies with crytallographic texture and temperature. Therefore, recrystallization is sensed as a change of texture, from a rolling to an annealing texture. A pyrometer is used to decouple temperature and texture effects on the velocity ratio. The measurements were made on two alloys: AA5754 and AA5052. The capabilities and limitations of the sensor are discussed.
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AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21273111
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Record identifier87a6c0d6-4cdc-4862-bc24-e2d3c19b4597
Record created2014-12-15
Record modified2016-05-09
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