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Processing and Mechanical Properties of Ti<sub>2</sub>AlC MAX Phase Reinforced AE44 Magnesium Composite
oleh: Xufeng Pi, Wenbo Yu, Chaosheng Ma, Xiaojun Wang, ShouMei Xiong, Antoine Guitton
Format: | Article |
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Diterbitkan: | MDPI AG 2020-02-01 |
Deskripsi
AE44 alloys and nanolaminated Ti<sub>2</sub>AlC particle-reinforced AE44 magnesium composites were synthesized by stir casting techniques and textured by hot extrusion methods. It was found that lamellar Al<sub>11</sub>RE<sub>3</sub> precipitates spheroidized with the introduction of Ti<sub>2</sub>AlC into the AE44 matrix. Both transmission electron microscope and planar disregistries calculations reveal a good match for interfacial lattice transition between Mg (0001) and the basal plane (0001) of Ti<sub>2</sub>AlC. This suggests that Ti<sub>2</sub>AlC is an efficient potent nucleating substrate for Mg, thus fertilizing the formation of strong interfacial bonds. After hot extrusion treatment, Ti<sub>2</sub>AlC particles were reoriented in the textured magnesium matrix, as confirmed by X-ray diffraction. This texture effect on the composite’s mechanical properties was carefully studied by tensile and compressive tests.