| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond V
|
| Presentation Title |
Vanadium Carbide Precipitation Hardening in Equiatomic FeNiCrMn and FeCoNiCr High Entropy Alloys |
| Author(s) |
Suok-Min Na, Nicholas Jones, Jin-Hyeong Yoo |
| On-Site Speaker (Planned) |
Suok-Min Na |
| Abstract Scope |
Precipitation hardening is a well-known mechanism for increasing the yield strength of metallic alloys, and has been extensively utilized in steels and even in high entropy alloys (HEAs). While vanadium carbide and vanadium nitride are among the most effective strengtheners for austenitic steels, they have garnered limited attention in the strengthening of face centered cubic (FCC) HEAs. Initial alloy design leveraged Thermo-Calc thermodynamic and kinetic simulations. These simulations aimed to assess phase stability and the potential for precipitation-strengthening within the chosen compositions and heat treatment parameters. Subsequently, based on computational findings, promising HEAs such as equiatomic FeCrNiMn and FeCoNiCr HEAs, featuring varied amounts of vanadium and carbon, were synthesized using an arc-melting furnace. These alloys underwent hot-rolling and heat treatment processes. Their resultant mechanical properties were evaluated through microhardness measurements and tensile tests. |