Journal
JOURNAL OF NONDESTRUCTIVE EVALUATION
Volume 31, Issue 3, Pages 191-196Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10921-012-0134-z
Keywords
Stainless steel; Ultrasonic attenuation; Material characterization; Grain size
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AISI 301 stainless steel samples were annealed over the temperature range of 800-1200A degrees C for 60 minutes to produce different grain sizes. These samples were characterized by ultrasonic immersion technique, tensile test, and optical microscopy. The attenuation of ultrasonic waves measured at a frequency of 20 MHz showed a good correlation with average grain size, hardness, and yield strength of AISI 301 stainless steel samples. A new equation was derived for calculation of yield strength on the basis of ultrasonic wave attenuation and Hall-Petch relation.
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