|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Utilization of Magneto-optical Kerr Effect Microscopy for Microstructural Characterization of Steels
||Matic Jovicevic-Klug, Patricia Jovicevic-Klug, Lars Thormählen, Jeffrey McCord, Bojan Podgornik
|On-Site Speaker (Planned)
In recent years, development of magneto-optical characterization techniques, specifically magneto-optical Kerr effect (MOKE), arose for investigating microstructural and correlatively mechanical properties of steels. The method allows investigation of magnetic properties that emerge from the investigated material’s surface and allows correlation to the bulk magnetic properties of the material. However, the method has been limited mainly to characterization of electrical steels. We present, that high-resolution MOKE microscopy can be applied on other steels for microstructural characterization such as morphology of martensite, identification of austenite and carbide grains without using etchants. As a result, MOKE microscopy is versatile and allows investigation of steels on different aspects of their properties on a microstructural level. We provide an example of such investigation on conventionally and cryogenically treated high-speed steels with dominating martensitic microstructure. The presented data provides insight to correlating magnetic information to the microstructure and consequentially to the mechanical properties of selected steels.