Microstructure and mechanical properties of solid AL2O3-ZRO2 (Y2O3) eutectics prepared by laser engineered net shaping
Source abstract
Abstract
High dense Al2O3-ZrO2 (Y2O3) eutectics were directly prepared based on the raw material of Al2O3-ZrO2 (Y2O3) ceramic powders by laser engineered net shaping. The microstructure, the microhardness, and the fracture toughness of Al2O3-ZrO2 (Y2O3) eutectics were evaluated. The compact cellular eutectic with the nanosize microstructure and the homogeneous dispersion of zirconia fibers embedded in the continuous Al2O3 matrix were obtained, and the periodic coarsening banded structure perpendicular to the deposition direction produced due to the layer-by-layer shaping style. Testing results showed that the microhardness of eutectic ceramic was 17.15 ± 0.4 GPa, the actual density was 4.407 g/cm3, and the relative destiny reached up to 98.3%. In addition, the fracture toughness value in the coarsening banded region was 4.79 ± 0.3 MPa·m1/2, and the region with the nanosize microstructure eutectic had the fracture toughness value 3.71 ± 0.3 MPa·m1/2. The coarsening banded region had the higher fracture toughness than that with the nanosize microstructure eutectic, which was because the large eutectic spacing would reinforce the compressive stress toughening mechanism.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Additive Manufacturing and 3D Printing Technologies · Bone Tissue Engineering Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Dalian University of Technology Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, , Dalian, Liaoning Province 116024, People's Republic of China
References (32)
Show source-provided references
1. A ductile ceramic eutectic composite with high strength at 1,873 K10.1038/37937 ↗
2. Microstructure and physical properties of some oxide eutectic composites processed by directional solidification10.1016/S1359-6454(00)00258-5 ↗
3. Microstructure, growth mechanism and mechanical property of Al2O3-based eutectic ceramic in situ composites10.1016/j.jeurceramsoc.2010.11.008 ↗
4. High temperature mechanical properties of Al2O3/ZrO2(Y2O3)Fibers10.1557/PROC-365-21 ↗
5. The effect of the microstructure on mechanical properties of directionally solidified Al2O3/ZrO2(Y2O3) eutectic10.1016/S1359-6454(00)00259-7 ↗
6. Microstructure of Y2O3 doped Al2O3–ZrO2 eutectics grown by the laser floating zone method10.1016/S0955-2219(02)00121-8 ↗
7. Oriented eutectic microstructures in the system Al2O3/ZrO210.1007/BF00556032 ↗
8. Microstructure of Y2O3 doped Al2O3/ZrO2 eutectic fibers grown by the micro-pulling-down method10.1016/S0022-0248(01)01451-8 ↗
9. Microstructure of Al2O3/ZrO2 eutectic fibers grown by the micro-pulling down method10.1016/S0022-0248(00)00998-2 ↗
10. Mechanical properties up to 1900 K of Al2O3/Er3Al5O12/ZrO2 eutectic ceramics grown by the laser floating zone method10.1016/j.jeurceramsoc.2013.11.013 ↗
11. Growth of Al2O3/ZrO2(Y2O3) eutectic rods by the laser floating zone technique: effect of the rotation10.1016/j.jeurceramsoc.2005.01.017 ↗
12. Piezospectroscopic study of residual stresses in Al2O3–ZrO2 directionally solidified eutectics10.1111/j.1151-2916.2000.tb01626.x ↗
13. Electrical properties of alumina–zirconia eutectic composites10.1016/S0167-2738(02)00082-6 ↗
14. Microstructure and mechanical properties of Al2O3/Er3Al5O12 eutectic rods grown by the laser-heated floating zone method10.1016/j.jeurceramsoc.2010.05.004 ↗
15. Microstructure and mechanical properties of Al2O3/Y3Al5O12/ZrO2 ternary eutectic materials10.1016/j.jeurceramsoc.2005.01.034 ↗
16. Microstructure refinement of melt-grown Al2O3/YAG/ZrO2-eutectic composite by a new method: Melt superheating treatment10.1016/j.scriptamat.2013.01.009 ↗
17. 3D finite element temperature field modelling for direct laser fabrication10.1007/s00170-008-1785-x ↗
18. Processing of bulk alumina ceramics using laser engineered net shaping10.1111/j.1744-7402.2008.02202.x ↗
19. Direct laser processing of bulk lead zirconate titanate ceramics10.1016/j.mseb.2010.04.022 ↗
20. Calcium phosphate grafts produced by rapid prototyping based on laser cladding10.1016/j.jeurceramsoc.2010.08.011 ↗
21. Nanosized microstructure of Al2O3–ZrO2(Y2O3) eutectics fabricated by laser engineered net shaping10.1016/j.scriptamat.2014.09.026 ↗
22. Additive manufacturing of ZrO2–Al2O3 ceramic components by selective laser melting10.1108/13552541311292736 ↗
23. Influence of laser power on the forming quality of Al2O3-ZrO2 eutectic ceramic
24. Microstructure of Y2O3 doped Al2O3/ZrO2 eutectic fibers grown by the micro-pulling-down method10.1016/S0022-0248(01)01451-8 ↗
25. Effect of melt temperature on the microstructure and hardness of similar-K445 superalloy
26. Mechanical properties of directionally solidified Al2O3–ZrO2(Y2O3) eutectics10.1016/S0921-5093(00)02040-2 ↗
27. Evaluation of fracture toughness of Zirconia-based ceramic by the indentation method
28. Evaluation ofKIc of brittle solids by the indentation method with low crack-to-indent ratios10.1007/BF00724706 ↗
29. Microstructure and mechanical properties of Al2O3–YSZ and Al2O3–YAG directionally solidified eutectic plates10.1016/j.jeurceramsoc.2005.01.021 ↗
30. Microstructure and fracture toughness of Al2O3/Er3Al5O12 eutectic ceramic prepared by laser zone remelting10.3724/SP.J.1077.2011.00841 ↗
31. Phase distribution and residual stresses in melt-grown Al2O3-ZrO2(Y2O3) eutectics10.1111/j.1151-2916.2002.tb00399.x ↗
32. Directionally solidified eutectic ceramic oxides10.1016/j.pmatsci.2005.10.002 ↗