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

• Autorzy: Nowacki J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: Purpose of this paper is description of influence of the parameters of the 14-5 PH steel and cements - PM Fe-TiC composite plates brazing using nickel based brazing filler metal BNi2 structure and properties of joints. Design/methodology/approach: Brazing was done in vacuum according to a special thermal cycle programme. Metallographic, X Ray analysis, microanalysis, hardness and tensile strength, as well quality investigations of produced joints have been done. Findings: It was shown that the joint has a eutectic multilayer structure with a zone of intermetallic compounds in the steel - soldier and soldier - PM Fe-TiC composite - Ferro - Titanit plates boundary. Intermetallic compounds zone differ clearly on account of a chemical composition, microstructure, and hardness from a brazing filler metal matrix. Research limitations/implications: It was shown that the diffusive zone from the PM 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, which consist several percent of nickel, iron and molybdenum. The diffusive zones are characterized by hardness higher than the filler metal matrix. Practical implications: As a result of conducted experiments a production of spinning nozzle of a die for polyethylene granulation with a vacuum-brazed with a PM Fe-TiC composite plates cutting surface have been worked out and applied in industry. Originality/value: An original value of the paper is to prove the propensity of concentration gradients of alloying components and intermetallic phases creation.

Słowa kluczowe

EN

metallic alloys; filler metal; brazing; joint; welding

PL

stopy metaliczne; spoiwo; lutowanie twarde; spoina; spawanie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 159--162
• Opis fizyczny: Bibliogr. 15 poz., fot., rys., tab.

Twórcy

autor

Nowacki J.

• Szczecin University of Technology, Institute of Materials Science and Engineering, Al. Piastów 19, 70-310 Szczecin, Poland,

Bibliografia

• [1] K. Boddenberg, On the Manufacture of Impellers for Turbo compressors, Proc. of 15th Turbo machinery Symposium, Texas University, 1996, 5-9.
• [2] J.F. Lancaster, Metallurgy of Welding. Abigon Publishing, Cambridge, 1999.
• [3] J. Nowacki, P. Świder, Producibility of brazed high dimensional centrifugal compressor impellers, Journ. of Materials Processing Technology, 133 (2003) 174 – 180.
• [4] J. Nowacki, M. Kawiak, Tensions and Deformations of WC - Co Cermets and 17 - 4 PH Steel Vacuum Brazed Joints, International Conference on Advanced materials AMPT’01 Madrid, 2001, Conf. Proc, II 1045 - 1052.
• [5] J. Nowacki, M. Kawiak, Deformability of WC – Сo sinters and 17 - 4 PH steel brazed joints, Journ. of Materials Processing Technology, 156-158 (2004) 584-589.
• [6] J. Nowacki, Vacuum Brazing, Bulletin of the Welding Institute Gliwice, 5, 2003, 75 - 80.
• [7] R. Peereboom, Vacuum Brazing of Turbo compressor Impellers Proceedings of Turbo machinery Maintenance Congress, Hampshire - England, 1993, 10.
• [8] H. Schmoor, European brazing alloys and fluxes, Braze Tec GmbH, Hanau, 2001.
• [9] J. Nowacki, M. Danielewski, R. Filipek, Brazed joints evaluation and computer modelling of mass transport in multi - component systems in the Au - Ni solder - 14- 5 PH joints, Journ. of Materials Processing Technology, 156-158C (2004) 213-220.
• [10] www.feerotitanit.com.
• [11] J.M. Fernandez, A. Munoz, F.M. Varela-Feria, M. Singh, Interfacial and thermo mechanical characterization of reaction formed joints in silicon carbide-based-materials, Journ. of the European Ceramic Soc., 20 (2000) 2641-2648.
• [12] A. Guedes, A.M.P. Pinto, M. Vieira, F. Viana, Multilayered interface in Ti/Macor machinable glass-ceramic joints. Materials Science and Engineering, 301 (2001) 118-124.
• [13] S.J. Huang, An analytical method for calculating the stress and strain in adhesive layers in sandwich beams, Composite Structures, 60 (2003) 105-114.
• [14] J. Nowacki, Structure and properties of large dimension vacuum brazed joints of 14-5 PH steel and WC - Сo sinters, 11th International Scientific Conference on Contemporary Achievements in Mechanics, Manufacturing and Materials Science, Zakopane, Conf. Mat. 713-719.
• [15] A.M. Kliauga, D. Travessa, M. Ferrante, Al2O3/Ti interlayer/AlSi 304 diffusion bonded joint micro structural characterization of the two interface, Materials Characterization, 46 (2001) 65-74.