Abstract
Rapid solidification of the intermetallic Ni3Sn compound from an undercooled liquid was investigated using time-resolved synchrotron X-ray diffraction. Primary growth of an ordered and a disordered cubic solid was observed in situ at a low and a high undercooling, respectively. The disordered cubic solid was reordered after rapid solidification and experienced a solid-state transformation in cooling. A HRTEM study revealed high density of crystal defects and nanodomains in the transformed matrix. A HAADF-STEM study determined that the nanodomains are antiphase domains with chemical disorder. These observations indicated a possibility of online control of mechanical properties in additively manufactured intermetallics.
Original language | English |
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Pages (from-to) | 55-58 |
Journal | Scripta Materialia |
Volume | 193 |
Online published | 28 Oct 2020 |
DOIs | |
Publication status | Published - 1 Mar 2021 |
Externally published | Yes |
Research Keywords
- Antiphase domains
- HAADF
- Intermetallics
- Rapid solidification
- X-ray diffraction