Metallurgical failure characterization of 2.25Cr-1Mo steel by magnetic property analysis

The magnetic properties of ferromagnetic materials may be described by the magnetic domain theory. This theory postulate that the material comprises local regions called ferromagnetic domains. And, a microstructural or a mechanical property changes the configuration of the domains, principally by wall movements. This study was aimed at finding reliable parameter for assessing the integrity of 2.25Cr-1Mo steel. From artificial aging specimen, microstructure, mechanical property, Barkhausen noise and hysteresis loop were obtained. Also, characteristic parameters were obtained between mechanical properties and measured magnetic properties.