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Experimental Research on Laser Brazing of Diamond Grits with a Ni-Based Filler Alloy

Authors :
Zhi Bo Yang
Ai Ju Liu
Jiu Hua Xu
Source :
Key Engineering Materials. 416:396-400
Publication Year :
2009
Publisher :
Trans Tech Publications, Ltd., 2009.

Abstract

Brazing diamond grits onto steel substrate using a Ni-based filler alloy was carried out via laser beam in an argon atmosphere. The microstructure of the interfacial region among the Diamond grits and the filler layer were investigated by means of scanning electron microscopes (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDS). Meanwhile, the formation mechanism of carbide layers was discussed. All the results indicated that the active element chromium in the Ni-based alloy concentrated preferentially to the surface of the grits to form a chromium-rich layer, and the hard joint between the alloy and the steel substrate is established through a cross-diffusion of iron and Ni-based alloy through parameters optimization.

Details

ISSN :
16629795
Volume :
416
Database :
OpenAIRE
Journal :
Key Engineering Materials
Accession number :
edsair.doi...........8f09c278c7a3f1623b7e0c2a1150d8ff
Full Text :
https://doi.org/10.4028/www.scientific.net/kem.416.396