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J Mater Sci Technol  2009, Vol. 25 Issue (03): 423-426    DOI:
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Microstructure and Properties of M40 Carbon Fibre Reinforced Mg-Re-Zr Alloy Composites
Gaohui Wu, Meihui Songy, Ziyang Xiu, Ning Wang and Wenshu Yang
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Abstract  

M40 carbon fibre reinforced rare earth magnesium alloy ZM6 composites with fibre volume fraction about 60% were fabricated by pressure infiltration method. The microstructure, interfacial morphology, and precipitation were studied by scanning electron microscopy, transmission electron microscopy, and energy dispersive X-
ray spectrometer. It was shown that the interfaces between Mg alloy and fibres were well bonded and free from cracks. The Mg12Nd phase was preferentially precipitated at the fibre/matrix interfaces, leading to the segregation of Nd at the interfaces and the dramatic decrease of Mg12Nd precipitation in the matrix far from interfaces. Crystal defects such as high-density dislocations and twins were observed in the matrix near the fibre/matrix interface. A high bending strength (1393 MPa) and elastic modulus (190 GPa) were achieved in M40/ZM6 composite.

Key words:  Magnesium matrix composites      Microstructure      Dislocations      Twin     
Received:  07 March 2008     
Corresponding Authors:  Meihui Song     E-mail:  smh1980@126.com

Cite this article: 

Gaohui Wu,Meihui Song,Ziyang Xiu,Ning Wang,Wenshu Yang. Microstructure and Properties of M40 Carbon Fibre Reinforced Mg-Re-Zr Alloy Composites. J Mater Sci Technol, 2009, 25(03): 423-426.

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https://www.jmst.org/EN/     OR     https://www.jmst.org/EN/Y2009/V25/I03/423

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