| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
MAGNETIC AND NANO-INDENTATION BEHAVIOR IN FeNi INVAR ALLOYS |
| Author(s) |
Rahulkumar Sunil Singh, Subbu Venkata Satyasri Harsha Pathapati, Sivaraman Guruswamy |
| On-Site Speaker (Planned) |
Subbu Venkata Satyasri Harsha Pathapati |
| Abstract Scope |
FeNi invar alloys with Ni content over 30% have an fcc structure. They are suitable for applications requiring excellent soft magnetic properties because of their unique combination of low coercivity, high saturation magnetization, good strength, and ductility. This study focuses on the magnetic and nanoindentation behavior in single crystal and polycrystalline Fe50-Ni50 alloy. The single crystals were prepared using a vertical Bridgman growth technique. Magnetic measurements were carried out using a vibrating sample magnetometer in the polycrystalline sample and single crystal samples cut from as-grown [100]-oriented FeNi single crystal along the [100], [110], and [111] directions. Nanoindentation experiments were carried out at room temperature on single crystal FeNi alloy samples with [100]-, [110]-, and [111]- orientations, with peak forces ranging from 500 μN to 10000 μN. Hardness and reduced modulus were determined using Oliver–Pharr’s method. To quantitatively assess the surface roughness before nanoindentation testing, AFM imaging was also performed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Mechanical Properties, Characterization |