A5067603677- High Entropy Alloys Studies
- Additive Manufacturing Materials and Processes
- High-Temperature Coating Behaviors
- Additive Manufacturing and 3D Printing Technologies
- Titanium Alloys Microstructure and Properties
- Welding Techniques and Residual Stresses
- Advanced materials and composites
- Intermetallics and Advanced Alloy Properties
Agency for Science, Technology and Research
2021-2024
Institute of Materials Research and Engineering
2021-2024
Multi-material additive manufacturing holds immense potential for performance and functionality enhancement. Past research efforts primarily focused on the horizontal interface (perpendicular to sample build direction) during laser-powder bed fusion (LPBF) of multi-materials, whereas a few studies demonstrated that vertical (parallel is in fact main obstacle towards high-integrity multi-material fabrication three-dimensional space. In this work, facilitated by our own patented powder...
By integrating calculation of phase diagram (CALPHAD) simulations, ab initio molecular dynamics (AIMD) and experimental validation, we shed light on the unexpected spinodal decomposition in as-cast Al30Co10Cr30Fe15Ni15 alloy, as opposed to eutectic BCC/B2 microstructure predicted by CALPHAD. We showed that high entropy alloy (EHEA) (SD) may be correlated with each other. A shift from EHEA SD can triggered strong short-range ordering liquid configuration metastable phase. CALPHAD low...
In this work, we develop an inverse design framework to search for single-phase high entropy alloys (HEAs) subjected specified phase targets and constraints. This is based on the fast grid in composition–temperature space, enabled by a highly accurate efficient machine learning model trained huge amount of data. Using framework, through entire quaternary, quinary, senary alloy systems, formed Al, Co, Cr, Cu, Fe, Mn, Ni, Ti, identify three types HEAs: (1) FCC HEA with highest Al content; (2)...