Solidification behavior of TiB2-Ti2AlN reinforced TiAl composites with variation Al content
Source abstract
Abstract
To address the inherent trade-off between strength and ductility in TiAl alloys, multi-component TiB 2-Ti 2AlN reinforced TiAl composite was designed by tailoring Al content and prepared using metallurgical techniques. The solidification behavior of TixAl2Cr2Nb-0.5BN composites were influenced by Al contents, exhibiting varied solidification path. An increase in Al content from 44 to 50 at.% leaded to a rise in the volume fraction of Ti 2AlN precipitates, shifting from 0.34 % to 2.05 %. Notably, the minimum lamellar colony size of 44 μm was produced with an Al content of 48 at.%. Simultaneously, both the γ-phase and the lamellar spacing underwent expansion as the Al content increased. A duplex microstructure was achieved at an Al content of 50 at.%. The Ti48Al2Cr2Nb-0.5BN composite exhibited an ultimate compressive strength of 2263 MPa, representing an enhancement of 47 % compared to the Ti44Al2Cr2Nb-0.5BN composite. Additionally, this composite displayed the highest compressive strain, marking an improvement of 115 %. The dominant fracture mechanisms of TiAl composites were revealed, including grain boundary fracture, crack deflection, inter-lamellar fracture, and the pull-out of reinforcing phases.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · MXene and MAX Phase Materials · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
Show source-provided references
1. Polysynthetic twinned TiAl single crystals for high-temperature applications10.1038/nmat4677 ↗
2. New insights into high-temperature deformation and phase transformation mechanisms of lamellar structures in high Nb-containing TiAl alloys10.1016/j.actamat.2020.01.021 ↗
3. Design, processing, microstructure, properties, and applications of advanced intermetallic TiAl alloys10.1002/adem.201200231 ↗
4. The vacuum melted γ-TiAl(Nb,Cr,Si)-doped alloys and their cyclic oxidation properties10.1016/j.vacuum.2018.04.055 ↗
5. TiAl alloys in commercial aircraft engines10.1080/09603409.2016.1183068 ↗
6. Influence of process conditions on the local solidification and microstructure during laser metal deposition of an intermetallic TiAl alloy (GE4822)10.1007/s11661-021-06139-2 ↗
7. Review of alloy and process development of TiAl alloys
8. Hot deformation processing capability of Fe-contained high Nb TiAl-based alloy10.1016/j.vacuum.2018.10.075 ↗
9. Creep behavior and related phase precipitation of a creep-resistant Y2O3-bearing high Nb containing TiAl alloy10.1016/j.matchar.2023.112767 ↗
10. Opportunities and challenges for metal matrix composites in the context of equipment upgrading10.15302/J-SSCAE-2020.02.012 ↗
11. Effects of boron, Hf and Ta content on boride morphology and microstructure of β-solidified γ-TiAl alloys10.1016/j.vacuum.2023.112363 ↗
12. Microstructural characteristics of Ti–45Al–8.5Nb/TiB2 composites by powder metallurgy
13. Enhanced nanohardness and new insights into texture evolution and phase transformation of TiAl/TiB2 in-situ metal matrix composites prepared via selective laser melting10.1016/j.actamat.2017.07.003 ↗
14. Fabrication, microstructure and compressive properties of Ti2AlC/TiAl composite with a bioinspired laminated structure10.1016/j.vacuum.2022.111124 ↗
15. Refining Ti2AlC particles and improvement of microstructure and mechanical properties on Ti46Al8Nb2.6C alloy by Er addition10.1016/j.msea.2022.144012 ↗
16. In situ Ti2AlN reinforced TiAl-based composite with a novel network structure: microstructure and flexural property at elevated temperatures10.1016/j.msea.2018.11.018 ↗
17. Microstructure characterization and mechanical properties of in situ synthesized Ti2AlN/Ti48Al2Cr2Nb composites10.1002/adem.201300417 ↗
18. Balancing the strength and ductility of Ti2AlC/TiAl composite with a bioinspired micro-nano laminated architecture10.1016/j.matdes.2022.110851 ↗
19. Improving high temperature oxidation resistance of TiAl alloy via hierarchical Ti5Si3-Ti2AlC precipitation strategy10.1016/j.corsci.2024.111834 ↗
20. Fabrication, microstructure and mechanical properties of TiAl matrix composite reinforced by submicro/nano-Ti2AlC10.1016/j.matchar.2023.113141 ↗
21. Fabrication of (TiB/Ti)-TiAl composites with a controlled laminated architecture and enhanced mechanical properties10.1016/j.jmst.2020.06.011 ↗
22. Effect of boron concentration on phase transformation texture in as-solidified Ti44Al8NbxB10.1016/j.scriptamat.2012.03.023 ↗
23. In-situ synthesized multi-component particle reinforced TiAl composite with excellent mechanical properties
24. Phase transformations and microstructures
25. Effect of Al content on the microstructure and mechanical properties of γ-TiAl alloy fabricated by twin-wire plasma arc additive manufacturing system10.1016/j.msea.2021.142008 ↗
26. Rietveld refinement guidelines10.1107/S0021889898009856 ↗
27. Mechanical properties of Si- and C-doped directionally solidified TiAl-Nb alloys10.1016/j.intermet.2004.01.004 ↗
28. Microstructural development during directional solidification of α-seeded TiAl alloys10.1016/j.actamat.2005.10.040 ↗
29. Al-Ti (aluminum-titanium)10.1361/105497100770340101 ↗
30. Al-N-Ti (Aluminum-Nitrogen-Titanium)
31. The structure of ribbon borides in a Ti-44Al-4Nb-4Zr-1B alloy10.1016/j.intermet.2005.11.013 ↗
32. Microstructure evolution in TiAl alloys with B additions: conventional solidification10.1007/BF02663215 ↗
33. Synthesis of titanium diboride TiB2 and Ti-Al-B metal matrix composites10.1023/A:1004789910279 ↗
34. Solidification behavior and microstructural features of the cast and HIPed N-bearing Ti-48Al-2Cr-2Nb intermetallic alloys10.1016/j.jmrt.2023.04.138 ↗
35. Atomic-scale unveiling of strengthening in interstitial solid soluted Nb-rich TiAl alloys10.1016/j.jallcom.2022.165484 ↗
36. Boron solubility and boride compositions in α2+γ titanium aluminides10.1016/S0966-9795(97)00016-2 ↗
37. An analytical electron microscopy study of the recently reported “Ti2Al phase” in γ-TiAl alloys10.1016/0036-9748(86)90221-8 ↗
38. Phase transformation mechanism involved in two-phase TiAl-based alloys-I.lamellar structure formation
39. Effect of Al content on the lamellar spacing in two-phase TiAl alloys10.1023/A:1012845422062 ↗
40. Formation of TiC/Ti2AlC and α2/γ in in-situ TiAl composites with different solidification paths10.1016/j.intermet.2017.02.025 ↗
41. Formation of Ti2AlN and TiB and its effect on mechanical properties of Ti46Al4Nb1Mo alloy by adding BN particles10.1016/j.msea.2019.04.046 ↗
42. Westbrook · 1995
43. The compression behaviour of niobium alloyed γ-titanium alumindies10.1016/S1359-6454(97)00332-7 ↗
44. Microstructural effects on the mechanical behaviour of B-modified Ti-6A1-4V alloys10.1016/j.actamat.2007.05.009 ↗
45. The effect of Stearic acid on microstructure and properties of (Ti2AlC + Al2O3)p/TiAl composites10.3390/met14040392 ↗
46. Superior strength-plasticity synergy in a heterogeneous lamellar Ti2AlC/TiAl composite with unique interfacial microstructure10.1016/j.jmst.2023.03.011 ↗
47. Low temperature rolling (Nb, Fe) co-alloyed TiAl-based alloy and compression property
48. Effect of Sn addition on the mechanical properties and high-temperature oxidation resistance of intermetallic TiAl alloys by first principles study and experimental investigation10.1016/j.jmrt.2022.11.007 ↗
49. Microstructure and mechanical properties of hybrid in-situ Ti2AlCw/Mo2B5p reinforced TiAl alloy10.1016/j.msea.2021.142182 ↗
50. Modification of microstructure and properties of Ti-47Al-2Cr-4Nb-0.3W alloys fabricated by SPS with trace multilayer graphene addition10.1016/j.matchar.2018.01.036 ↗