Fabrication and Reaction Mechanism of In Situ TiC and TiB2 Reinforced Mg Matrix Composites

Mohammed Shamekh; Martin Pugh; Mamoun Medraj

doi:10.4028/www.scientific.net/AMR.409.215

Paper Titles

Investigating the Potential of TiB₂–Based Composites with Ti and Fe Additives as Wettable Cathode
p.195

Microstructure and Superconductive Property of MgB₂/Al Composite Materials
p.201

Microstructure of the New Route Wire Fabrication of V₃Ga Compound Superconducting Wire Using High Ga Content Cu-Ga/V Precursor Composite Material
p.205

Fabrication of W-12wt%Cu Composites by Powder Metallurgy Method: Activated Sintering
p.209

Fabrication and Reaction Mechanism of In Situ TiC and TiB₂Reinforced Mg Matrix Composites
p.215

Microstructure Evolution in a P911 Steel under Creep Conditions
p.223

Role of Delamination Fracture for Enhanced Impact Toughness in 0.05 %P Doped High Strength Steel with Ultrafine Elongated Grain Structure
p.231

Effect of Die Temperature on Tensile Property of Rheocast Phosphor Bronze
p.237

The Brittle-to-Ductile Transition Behaviour in Fe-Al Single Crystalline Alloys
p.243

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 409Fabrication and Reaction Mechanism of In Situ TiC...

Fabrication and Reaction Mechanism of In Situ TiC and TiB₂Reinforced Mg Matrix Composites

Abstract:

TiC and TiB₂ compounds in the form of interpenetrating network reinforced AZ91D magnesium matrix composites have been successfully synthesized by an in-situ reactive infiltration technique. In this process, the ceramic reinforcement phases, TiC and TiB₂, were synthesized in-situ from elemental powders of Ti and B₄C without any addition of a third metal powder such as Al. The molten Mg alloy infiltrates the preform of Ti_p and B₄C_p by the capillary force. The microstructure and reaction mechanism are investigated using SEM/EDS and XRD analysis. The results show that the processing parameters such as temperature, holding time and the green compact relative density have a significant influence on the reaction mechanism and the fabrication of the composite. In addition, the infiltrated Mg acts as an intermediary that makes the reaction possible at a lower temperature than that required for solid-state reaction between Ti and B₄C. Microstructural characterization reveals a relatively uniform distribution of the reinforcing phases, TiC and TiB₂ in the Mg matrix.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 409)

Pages:

215-220

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.409.215

Citation:

Cite this paper

Online since:

November 2011

Authors:

Mohammed Shamekh, Martin Pugh, Mamoun Medraj

Keywords:

AZ91D Alloy, Composite, In Situ, Reaction Mechanism, TiB₂, TiC

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] S.C. Tjong and Z.Y. Ma: Mater. Sci. and Eng., R: Reports, Vol. 29(3-4) (2000), p.49.

Google Scholar

[2] H.Y. Wang, Q.C. Jiang, X.L. Li, J.G. Wang, Q.F. Guan and H.Q. Liang: Materials Research Bulletin, Vol. 38(8) (2003), p.1387.

Google Scholar

[3] Y. Wang, H. Y. Wang, K. Xiu, and Q. C. Jiang: Materials Letters, Vol. 60(12) (2006), p.1533.

Google Scholar

[4] L.Q. Chen, Q. Dong, M.J. Zhao, J., Bi and N. Kanetake: Mater. Sci. and Eng. A, Vol. 408 (1-2) (2005), p.125.

Google Scholar

[5] B. Ma, H. Wang, Y. Wang, and Q. Jiang: Journal of Materials Science, Vol. 40(17) (2005), p.4501.

Google Scholar

[6] Z. Xiuqing, W. Haowei, L. Lihua, T. Xinying and M. Naiheng: Materials Letters, Vol. 59(17) (2005), p.2105.

DOI: 10.1016/j.matlet.2005.02.020

Google Scholar

[7] Q. Dong, L.Q. Chen, M.J. Zhao and J. Bi: Materials Letters, Vol. 58(6) (2004), p.920.

Google Scholar

[8] D. Emin: Structure and single-phase regime of boron carbides. Journal of Review Letters B, Vol. 38 (1988), p.6041.

DOI: 10.1103/physrevb.38.6041

Google Scholar

[9] V. Kevorkijan, and S.D. Skapin: Journal of Materials and Manufacturing Processes, Vol. 24 (2009), p.1337.

Google Scholar

[10] S. Brutti, , G. Balducci, , G. Gigli, A. Ciccioli, P. Manfrinetti and A. Palenzona: Journal of Crystal Growth, Vol. 289(2) (2006), p.578.

DOI: 10.1016/j.jcrysgro.2005.12.105

Google Scholar