Abstract
The processing approach and conditions to fabricate AZ91–Ti3AlC2 composites through melt infiltration (MI) were optimized. Ti3AlC2 reinforcement was varied from ~ 30 to ~ 50 vol.%. In the processing approach, AZ91 alloy cubes were spread in Ti3AlC2 powder packing and heated to 600–750 °C at an applied pressure of 0.2–7 MPa, resulting in AZ91–Ti3AlC2 composite. The effect of starting particle size of Ti3AlC2 powder applied pressure, temperature and time to obtain 95% relative density composites was studied. Further, it was demonstrated that the processing parameters differ with the varying Ti3AlC2 vol.%. The effect of reinforcement particle size on distribution within the AZ91 matrix was established. The processing approach is a single step, wherein the preform fabrication process is not required, as reported in the literature. Microhardness, compressive strength and flexural strength of AZ91–50Ti3AlC2 composite were 307 ± 14 HV0.5, 592 ± 13 MPa and 560 ± 9 MPa, respectively.
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Acknowledgments
The authors wish to sincerely acknowledge the financial support received from the Aeronautics Research and Development Board, New Delhi, Government of India (ARDB/01/2031765/M/I). We would like to thank our colleagues from Materials Science Division: Dr M Sujata (providing AZ91 sample and also for technical discussion), Dr Kaustav Barat (technical discussion), Dr Anjana Jain (XRD), Mr Madan (Optical Microscopy), Mr M Stalin (compression test). We would like to thank Mr Siju, Surface Engineering Division, CSIR-National Aerospace Laboratories, Bangalore for his help in conducting FESEM studies.
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Rani, D., Rangaraj, L., Suresha, B. et al. Influence of Ti3AlC2 Ceramic Particles in AZ91 Alloy: Produced by Melt Infiltration Method. Trans Indian Inst Met 74, 743–752 (2021). https://doi.org/10.1007/s12666-021-02185-x
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DOI: https://doi.org/10.1007/s12666-021-02185-x