Effects of TiH2 on the Properties of Fe-Based Diamond Composites

Qiu Lian Dai; Xi Peng Xu

doi:10.4028/www.scientific.net/KEM.291-292.27

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 291-292Effects of TiH2 on the Properties of Fe-Based...

Effects of TiH₂ on the Properties of Fe-Based Diamond Composites

Abstract:

Effects of TiH2 on the mechanical properties and microstructures of Fe-based diamond composites as well as the performance of diamond segments in circular sawing of granites are presented in this paper. Experimental results reveal that the addition of 2%TiH2 into the Fe-based matrix leads to decreases in the mechanical properties of both matrix and diamond composites. The wear resistance of the saw-blade segments decreases by 7.3%. Microscope observations reveal that the specimen without TiH2 shows fewer pores and denser structures in the base matrix. The fracture surfaces of the bending test specimens exhibit ductile cup and cone behavior and strong bonding between the matrix and diamond. SEM micrographs indicate that there are much more pull-outs of diamond grits, much more serious wear of diamond particles and erosion of metal matrix on the worn surface of saw-blades segments with 2% TiH2 in the matrix.

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Periodical:

Key Engineering Materials (Volumes 291-292)

Pages:

27-32

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.291-292.27

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Online since:

August 2005

Authors:

Qiu Lian Dai, Xi Peng Xu

Keywords:

Diamond Composites, Mechanical Property, Sawing Performance, TiH₂ Additive, Wear Resistance

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