Shear Strength of Brazed Joint between Diamond Grains and Steel Matrix Using a Ni-Cr Filler Alloy

Abstract:

The joining strength and corresponding fracture mechanism of the brazing interface between diamond grains and tool matrix is one of the primary problems in the development and application of brazed diamond grinding tools. In this study shearing tests were performed for the brazed joints, meanwhile the fracture mechanism and the joining characteristics were analyzed deeply. The results indicate that, depending on the metallurgical integration effect through the atom diffusion between the filler alloy and the metal matrix, and on the strong chemical bond by the new-formed Cr-C compounds between the filler alloy and diamond grains, hard and reliable joining is realized at the grain interfaces, which significantly supports the potential advantages of the latest brazed diamond grinding tools.

• Periodical: Key Engineering Materials (Volume 329)
• Pages: 501-506
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.329.501
• Online since: January 2007
• Authors: Jiu Hua Xu, Wen Feng Ding, F. Qian
• Keywords: Brazing, Diamond Grain, Filler Alloy, Shear Strength, Steel Matrix

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