Study on microstructure and mechanical properties of bionic bone structure AZ91-Ti cross-composites

XIE Xiangzhong; CAI Weitong; GAO Pengfei; ZHANG Yuhui; HAN Shengli; ZHENG Kaihong; PAN Fusheng

doi:10.7513/j.issn.1004-7638.2025.04.006

Volume 46 Issue 4

Aug. 2025

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2025 > 46(4): 43-51, 79

XIE Xiangzhong, CAI Weitong, GAO Pengfei, ZHANG Yuhui, HAN Shengli, ZHENG Kaihong, PAN Fusheng. Study on microstructure and mechanical properties of bionic bone structure AZ91-Ti cross-composites[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 43-51, 79. doi: 10.7513/j.issn.1004-7638.2025.04.006

Citation:

XIE Xiangzhong, CAI Weitong, GAO Pengfei, ZHANG Yuhui, HAN Shengli, ZHENG Kaihong, PAN Fusheng. Study on microstructure and mechanical properties of bionic bone structure AZ91-Ti cross-composites[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 43-51, 79. doi: 10.7513/j.issn.1004-7638.2025.04.006

Citation:

XIE Xiangzhong, CAI Weitong, GAO Pengfei, ZHANG Yuhui, HAN Shengli, ZHENG Kaihong, PAN Fusheng. Study on microstructure and mechanical properties of bionic bone structure AZ91-Ti cross-composites[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 43-51, 79. doi: 10.7513/j.issn.1004-7638.2025.04.006

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Study on microstructure and mechanical properties of bionic bone structure AZ91-Ti cross-composites

doi: 10.7513/j.issn.1004-7638.2025.04.006

1.
School of Material and Energy, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
2.
Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium & Rare Metals, Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Guangzhou 510650, Guangdong, China

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Received Date: 2025-01-23
Available Online: 2025-08-31
Publish Date: 2025-08-31

Abstract

Abstract

In this paper, AZ91-Ti cross composites with bionic bone structure were prepared by powder metallurgy combined with pressureless infiltration technology, which achieved the simultaneous improvement of strength and fracture toughness. Microscopic tests show that the Ti phase is continuously distributed and exhibits a specific bionic skeleton structure, and the Mg phase is interwoven into the connected pores of the Ti skeleton. The serrated Al₂Ti phase is formed at the AZ91-Ti interface, which enhances the interfacial bonding strength. The mechanical tests show that the 50vol% AZ91-Ti cross-composite has the best mechanical properties. The yield strength, tensile strength and fracture toughness are 383 MPa±3.5 MPa, 489 MPa±4.9 MPa and 36.2 MPa·m^0.5, respectively. The improvement of the strength of the composite is due to the load effect of the high bionic Ti skeleton and the excellent interface bonding. The toughening behavior of the composites comes from the crack winding caused by the Ti skeleton bionic structure and the energy dissipation of the Ti phase extraction.
- bionic bone structure,
- cross-composites,
- microstructure,
- mechanical properties

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References(40)

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