NewIn-situ synthesis method of magnesium matrix composites reinforced with TiC particulates

Zhang, Xiuqing; Liu, Lihua; Ma, Naiheng; Wang, Haowei

doi:10.1590/s1516-14392006000400003

Cited by 4 publications

References 7 publications

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Processing and Characterization of In Situ (TiC–TiB₂)_p/AZ91D Magnesium Matrix Composites

2013

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In this paper, a practical and cost‐effective processing route, in situ reactive infiltration technique, was utilized to fabricate magnesium matrix composites reinforced with a network of TiC–TiB2 particulates. These ceramic reinforcement phases were synthesized in situ from Ti and B4C powders without any addition of a third metal powder such as Al. The molten Mg alloy infiltrates the preform of (Tip + B4Cp) by capillary forces. The microstructure of the composites was investigated using scanning electron microscope (SEM)/energy dispersive X‐ray spectroscopy (EDS). The compression behavior of the composites processed at different conditions was investigated. Also, the flexural strength behavior was assessed through the four‐point‐bending test at room temperature. Microstructural characterization of the (TiB2–TiC)/AZ91D composite processed at 900 °C for 1.5 h shows a relatively uniform distribution of TiB2 and TiC particulates in the matrix material resulting in the highest compressive strength and Young's modulus. Compared with those of the unreinforced AZ91D Mg alloy, the elastic modulus, flexural and compressive strengths of the composite are greatly improved. In contrast, the ductility is lower than that of the unreinforced AZ91D Mg alloy. However, this lower ductility was improved by the addition of MgH2 powder in the preform. Secondary scanning electron microscopy was used to investigate the fracture surfaces after the flexural strength test. The composites show signs of mixed fracture; cleavage regions and some dimpling. In addition, microcracks observed in the matrix show that the failure might have initiated in the matrix rather than from the reinforcing particulates.

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Processing and Characterization of In Situ (TiC–TiB₂)_p/AZ91D Magnesium Matrix Composites

2013

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Effect of carbon and aluminum contents on the structurization of Al–Ti–C powder master alloy during reaction synthesis

Shishkina

Baglyuk

Mamonova

et al. 2013

Powder Metall Met Ceram

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Composites Produced by SHS Method – Current Development and Future Trends

Lis

Kata

Bućko

et al. 2010

Advances in Science and Technology

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Basic stages of progress in composite materials, prepared by SHS method, from a scientific approach to a promising and rapidly developing applications are discussed in this paper. The systematic review of different forms of composites prepared directly by SHS or by SHS-origin precursors is presented. Powders are usually the starting material for manufacturing of ceramic and a lot of attention has been paid to find new routes for synthesis powders in form of nano or micro particles. The present work is aimed at efficient and convenient powder processing by SHS as an important target for future composites technology. The use of SHS may bring a considerable development in ceramic technology, by enabling a manufacturing of sinterable, high-purity nano or micro powders. It can be demonstrated in different ceramic systems explored by the authors and coworkers using SHS e.g. (a) Si-C-N, (b) Al-O-N as well as (c) Ti-Si-C-N. Rapid combustion conditions were successfully used to manufacturing composite powders and nanopowders suitable for preparing multiphase composite materials having controlled properties.

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NewIn-situ synthesis method of magnesium matrix composites reinforced with TiC particulates

Cited by 4 publications

References 7 publications

Processing and Characterization of In Situ (TiC–TiB₂)_p/AZ91D Magnesium Matrix Composites

Processing and Characterization of In Situ (TiC–TiB₂)_p/AZ91D Magnesium Matrix Composites

Effect of carbon and aluminum contents on the structurization of Al–Ti–C powder master alloy during reaction synthesis

Composites Produced by SHS Method – Current Development and Future Trends

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NewIn-situ synthesis method of magnesium matrix composites reinforced with TiC particulates

Cited by 4 publications

References 7 publications

Processing and Characterization of In Situ (TiC–TiB2)p/AZ91D Magnesium Matrix Composites

Processing and Characterization of In Situ (TiC–TiB2)p/AZ91D Magnesium Matrix Composites

Effect of carbon and aluminum contents on the structurization of Al–Ti–C powder master alloy during reaction synthesis

Composites Produced by SHS Method – Current Development and Future Trends

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Product

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Processing and Characterization of In Situ (TiC–TiB₂)_p/AZ91D Magnesium Matrix Composites

Processing and Characterization of In Situ (TiC–TiB₂)_p/AZ91D Magnesium Matrix Composites