Microscopic mechanical properties of TiB2/A390 composites studied using in-situ synchrotron X-ray diffraction
This study investigates the effects of TiB2 ceramic particles on the mechanical and wear properties of 6 wt% TiB2/A390 composites prepared via semi-solid state technology. Transmission electron microscopy (TEM) was employed to examine the interfacial structure of the composite, while in-situ synchro...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425018216 |
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| Summary: | This study investigates the effects of TiB2 ceramic particles on the mechanical and wear properties of 6 wt% TiB2/A390 composites prepared via semi-solid state technology. Transmission electron microscopy (TEM) was employed to examine the interfacial structure of the composite, while in-situ synchrotron X-ray diffraction was used to study the micromechanical behavior during tensile testing. The load transfer behavior between the Al matrix, primary Si and TiB2 was analyzed by tracking the lattice strain, diffraction intensity and broadening of different diffraction peaks during the tensile process. The results show that the addition of TiB2 significantly enhances the composite's ultimate tensile strength and elongation by 61 % and 62 %, respectively. Furthermore, friction and wear tests revealed that TiB2 improves the wear resistance of the composite, wear depth and wear area are minimized, reducing the friction coefficient and wear rate compared to the base A390 alloy. |
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| ISSN: | 2238-7854 |