Abstract
A graded binary titanium-nickel alloy with a compositional gradient, from elemental Ti to Ti-23.2 at. % Ni, has been successfully deposited using laser rapid forming. A metallurgical study of the phase evolution along the compositional gradient showed that a series of phase evolutions α→ α+β→ α+β+Ti2Ni→ β/B2 +Ti 2Ni have occurred. Phase formation and microstructure evolution along the compositional gradient was analyzed by Scheil-Gulliver and eutectic growth models. In particular, the morphology of the β/B2 +Ti2Ni anomalous and coupled eutectic is discussed in detail.
Original language | English |
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Pages (from-to) | 410021-410025 |
Number of pages | 5 |
Journal | Journal of Engineering Materials and Technology |
Volume | 131 |
Issue number | 4 |
DOIs | |
State | Published - Oct 2009 |
Keywords
- Functionally graded materials
- Laser rapid forming
- Microstructure evolution
- Nickel
- Titanium