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 |
Process Optimization of Spark Plasma Sintered Ti20Al20Cr5Nb5Ni17Cu16Co17 High Entropy Alloy Using Response Surface Methodology |
| Author(s) |
Ufoma Silas Anamu, Emmanuel Olorundaisi, Peter A. Olubambi |
| On-Site Speaker (Planned) |
Ufoma Silas Anamu |
| Abstract Scope |
Impact of milling and sintering processes on the relative density(RD) and microhardness(MH) was investigated on Ti20Al20Cr5Nb5Ni17Cu16Co17 high entropy alloy fabricated from spark plasma sintering(SPS) process at a constant heating rate (100 oC/min), 5 minutes dwell-time, and pressure of 50MPa. A predictive model was created using response surface methodology(RSM) to analyze the impact of sintering temperature(ST) and milling time(MT) on the process. To minimize the number of experimental trials, user-defined design(UDD) of the RSM was employed in the design of experiment, hence eliminating the need for trial-and-error approach often connected with traditional experimental techniques. Observation shows that both MT and ST play a crucial role in producing a high level of densification, resulting in improved mechanical characteristics. The optimization model indicates that with 9.7106 hours MT and 887.923 oC ST, it is possible to achieve acceptable outcomes including a 99.72% RD, porosity percentage of 0.28%, and MH value of 802.868 HV. |