In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process
Abstract
:1. Introduction
2. Scope of the Investigations
3. Materials and Methods
4. Results and Discussion
4.1. Preliminary Investigations on Process Behavior
4.2. Wire Arc Additive Manufacturing of Ti–Al Structures with Al Concentrations of 10–55 at%
4.3. Microstructural Analysis of Ti–Al Samples
4.4. Approaches to Reduce Inhomogeneity of the Microstructural Composition
4.5. Phase Identification of Ti–Al Alloys with Differing Aluminum Content
4.6. Influence of Alloy Composition on Microhardness
4.7. Influence of Post-Heat Treatment on the Microstructure of Ti–47Al Alloy
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Function | Material | Nmax | Cmax | Omax | Simax | Femax | Timax | Almax |
---|---|---|---|---|---|---|---|---|
substrate | Ti Grade 2 (3.7035) | 0.03 | 0.08 | 0.25 | - | 0.30 | balance | - |
welding wire | Ti99.6 (3.7036) | 0.015 | 0.08 | 0.16 | - | 0.12 | balance | - |
hot wire | Al99.5Ti (3.0805) | - | - | - | 0.05 | 0.21 | 0.15 | balance |
Aluminum Concentration (at%) | 10 | 20 | 30 | 40 | 47 | 50 | 55 |
Hot-wire Feeding Rate (m/min) | 0.418 | 0.942 | 1.614 | 2.511 | 3.34 | 3.767 | 4.603 |
Phase | Symbol | Aluminum Content in (at%) |
---|---|---|
Ti3Al | α2 | 18–39 |
TiAl | γ | 48–62 |
TiAl2 | ƞ | 66–67 |
TiAl3 | ε | 74–75 |
Ti2Al5 | ζ | 64–73 |
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Henckell, P.; Ali, Y.; Metz, A.; Bergmann, J.P.; Reimann, J. In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process. Metals 2019, 9, 578. https://doi.org/10.3390/met9050578
Henckell P, Ali Y, Metz A, Bergmann JP, Reimann J. In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process. Metals. 2019; 9(5):578. https://doi.org/10.3390/met9050578
Chicago/Turabian StyleHenckell, Philipp, Yarop Ali, Andreas Metz, Jean Pierre Bergmann, and Jan Reimann. 2019. "In Situ Production of Titanium Aluminides during Wire Arc Additive Manufacturing with Hot-Wire Assisted GMAW Process" Metals 9, no. 5: 578. https://doi.org/10.3390/met9050578