Title: Brazing of 14-5 PH steel and Fe-TiC composite using AWS BNi2 filler metal

Authors: Jerzy Nowacki

Addresses: Institute of Materials Science and Engineering, Szczecin University of Technology, Al. Piastow 19, Szczecin 70-310, Poland

Abstract: The influence of the parameters of the 14-5 PH steel and Fe-TiC composite, the vacuum brazing using nickel-based brazing filler metal BNi2 on structure and properties of joints was investigated. The joint has multilayer structure with a zone of intermetallic compounds, which differ on account of a chemical composition, microstructure and hardness from a brazing filler metal matrix. The diffusive zone from the Fe-TiC composite side is rich in titanium, molybdenum and iron, in the joint axis, there is a zone rich in silicon, and in a boundary filler metal-steel rich in iron and nickel. In the rich in nickel and iron filler metal matrix, there are intermetallic phases rich in chromium, nickel, iron and molybdenum. As a result of conducted experiments, a production of spinning nozzle of a die for polyethylene granulation with a vacuum-brazed Fe-TiC composite cutting surface have been worked out and applied in industry. [Received on 25 October 2006; Accepted on 10 February 2007]

Keywords: metallic alloys; mechanical properties; metallography; vacuum brazing; PM composites; powder metallurgy; joints; chemical composition; microstructure; hardness; titanium; molybdenum; iron; nickel; chromium; die spinning nozzle; polyethylene granulation.

DOI: 10.1504/IJMPT.2008.020589

International Journal of Materials and Product Technology, 2008 Vol.33 No.3, pp.291 - 304

Available online: 01 Oct 2008 *

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