Effect of structure of aging metastable austenitic steels on the signal from an eddy-current transducer
Source abstract
Abstract
Eddy-current parameterf 0 of the N26T3 steel has been studied as a function of both the aging temperatureT ag=20–800°C and the time τ of exposure to a constant temperature of 550 and 600°C up to 6h. In the initial state, the steel had two phases: (1) cooling-induced martensite+austenite (α+γ) or (2) strain-induced martensite+austenite (α′+γ). The parameterf 0 drops monotonically as τ increases, and this drop is the faster, the higherT ag. The parameterf 0 changes nonmonotonically with the aging temperature. In addition to the initial two-phase structures, the one-phase γ structure has also been studied. The parameterf 0 grows monotonically with the plastic cold strain and changes nonmonotonically with the aging temperature (20–800°C). Observed changes inf 0 have been explained.
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Research context
OpenAlex topics: Non-Destructive Testing Techniques · Magnetic Properties and Applications · Material Properties and Failure Mechanisms
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References (5)
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