Abstract
The article shows an attempt to group the main areas of practical applications for NDT of ferromagnetic metal mechanical properties by measuring a magnetic parameter – a coercive force. All the areas are divided into 5 blocks. The first block represents coercivity application for process inspection and acceptance inspection at metal production. The second and third blocks represent in-service local and integral inspection of equipment and its parts current status. The fourth and fifth blocks present coercimetric fatigue state estimation of austenitic (initially non-magnetic) stainless steels. Using a coercimetric inspection (the tried-and-true method for ferromagnetic steels) is getting possible due to austenite transformation followed by initiation of ferromagnetism. In this case the fatigue damage level can also be estimated. The cumulative coercimetric effect of austenite degradation is even more evident than that for classic ferromagnetic steels. Thus the task of fatigue testing for stainless austenitic steels can be considered solved at practice level.
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