About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-Grained and Heterostructured Materials (UFGH) XIV
|
| Presentation Title |
Microstructures and mechanical properties of reacted Ti-Al4Mg metal-intermetallic laminates (MILs) with different ratios of metal and intermetallic phases |
| Author(s) |
Daniel Yin, Rodney James Mccabe, Thomas Joseph Nizolek, Hi Tin Vo |
| On-Site Speaker (Planned) |
Daniel Yin |
| Abstract Scope |
Micro and nano metal-laminates (MLs) can attain high specific strength due to the high area density of interfaces. The strength of MLs with intermetallic forming constituents may be further improved by annealing to produce metal-intermetallic-laminates (MILs). In this work, MLs with varying ratios of Ti + Al-4Mg are fabricated using accumulated-roll-bonding to layer thicknesses as low as 25 nm. These MLs are then annealed to form MILs with different ratios of ductile metal and brittle intermetallic phases. Microstructures of these MILs are characterized using SEM, EBSD, and TEM, while strength and ductility are measured using micromechanical testing of FIB cut samples. Combinations of higher Ti feedstock ratio, smaller layer thickness, and lower annealing temperatures minimize deleterious phenomena found in Al-4Mg-rich samples: high volume fractions of brittle Mg containing intermetallic and large oblong Kirkendall voids. These results provide insight towards optimizing the microstructure and mechanical properties of MIL composites. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Phase Transformations |