About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Fracture of Steels: New Approaches to Modeling and Experimental Characterization
|
Presentation Title |
Local Micromechanical Properties of Inclusions in Ferrous Alloys |
Author(s) |
Alejandra Inés Slagter, Joris Everaerts, Léa Deillon, Andreas Mortensen |
On-Site Speaker (Planned) |
Andreas Mortensen |
Abstract Scope |
Non-metalic oxide inclusions are commonly present in steel and can exert a tangible influence on its mechanical properties; yet, comparatively little is know of their intrinsic mechanical properties. We fill this gap by conducting micromechanical tests on micron-scale inclusions that have been precipitated within ferrous samples, aiming to measure their local mechanical properties including their stiffness and strength. Samples of iron containing oxide inclusions of varying composition are produced by melting oxygen-containing iron in a cold-crucible furnace and adding deoxidizing elements such as silicon, aluminum or calcium. Local inclusion micromechanical properties are measured by means of instrumented nanoindentation along flat polished surfaces, and compression testing of microscopic “C-shaped” bend test samples that have been carved by focused ion beam milling of inclusions partially exposed along electrochemically etched alloy surfaces. |