As a guest user you are not logged in or recognized by your IP address. You have
access to the Front Matter, Abstracts, Author Index, Subject Index and the full
text of Open Access publications.
This work studies the potential of magnetic hysteresis and Barkhausen noise measurements for detection of an inimical cementite/chill fraction in a ductile cast iron. The samples are cast into a specially shaped mold with four steps of different thickness to vary a cooling rate during the solidification. Six castings are performed with different chill acceleration components: 0.1, 0.2 and 0.3% of Cr; 0.7, 1.2 and 1.7% of Mn. This results in a wide variation of the cast iron composition, which is evaluated by a standard optical microscopy procedure and Vickers hardness techniques. Magnetic measurements are performed using a unique laboratory system with a direct determination of the surface tangential magnetic field. The presented results suggest that the magnetic response is mainly determined by the ferrite content. Increase of the ferrite content expectedly leads to a linear decrease of the magnetic coercive field. The magnetically/mechanically harder cementite increases the coercive field, but the complex cast iron structure with differently mixed fractions of ferrite and pearlite disturbs the linear correlation.
This website uses cookies
We use cookies to provide you with the best possible experience. They also allow us to analyze user behavior in order to constantly improve the website for you. Info about the privacy policy of IOS Press.
This website uses cookies
We use cookies to provide you with the best possible experience. They also allow us to analyze user behavior in order to constantly improve the website for you. Info about the privacy policy of IOS Press.