The crystallisation of the aluminium bronze with additions of Si, Cr, Mo and/or W

• Autorzy: Pisarek B. P.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this paper is description of the process of the crystallization of new aluminium bronzes with the complex silicides of the iron. Design/methodology/approach: Additions Cr, W, Mo and Si were introduced to create in the microstructure of the aluminium bronze of the complex silicides of the iron about high mechanical and physical proprieties to the bronze BA1044. The process of formation the microstructure of the bronze with use of the method of the thermal and derivative analysis (TDA) was analysed. The examinations under the microscope and X-ray microanalysis of the surface distribution of elements were conducted. Findings: From carried research results, that in the aluminium bronze BA1044 after addition Si, Cr, Mo and/or W the phase κ Fe, κ Ni crystallize as the complex silicides of the iron. Elements such as: Fe and Si dissolve first of all in silicides in the smaller stage in the matrix of the bronze, Mn and Ni they dissolve in matrix and silicides, Cr dissolves in the larger stage in silicides than in the matrix, W and Mo dissolve in silicides however they crystallize as nanocrystals in the metal matrix and create with her composite. Research limitations/implications: Results of investigations of aluminium bronze BA1044 and alloys after adding to him about 1% Si were introduced in the article and suitably: 1.22 % C; 0.82 % Mo; 0.020 % W; 0.60 % Cr, 0.17 % Mo and 0.017 % W. Originality/value: The original results of the investigations of the crystallization of the new bronzes (innovative materials and casting technologies) for which the process of arising microstructure the method TDA was not analysed so far were introduced in the article. The article possesses cognitive values not only essential for researcher but and practician-melters.

Słowa kluczowe

EN

metallic alloys; aluminium bronze; complex silicides of the iron; TDA method

PL

stopy aluminium; aluminium; brąz; krzemki żelaza; metoda TDA

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2007
• Tom: Vol. 28, nr 8
• Strony: 461--466
• Opis fizyczny: Bibliogr. 10 poz., il., wykr.

Twórcy

autor

Pisarek B. P.

• Department of Materials Engineering and Production Systems, Technical University of Łódź, ul. Stefanowskiego 1/15, 90-924 Łódź, Poland,

Bibliografia

• [1] Z. Górny, Casting aluminium bronzes, Part I and II, Institute of Casting, 2006 (in Polish).
• [2] T. Grzegorzewicz, Nickelless aluminium bronzes with increased durability and resistance on corrosion, University of technology Wrocław, 2005 (in Polish).
• [3] M. Wysiecki, The influence of chemical composition and structural building on the usable proprieties of multiple aluminium bronzes, Scientific Works of Instiutute od Machine Buildings, Szczecin University of Technology 57, 1976 (in Polish).
• [4] B. Aronsson, T. Lundström, S. Rundqvist, Borides, silicides and phosphides-a critical review of their preparation, Properties and Crystal Chemistry, John Wiley & sons INC, New York, 1965.
• [5] R. D. Weir, Thermophysics of advanced engineering materials, Pure Applied Chemistry 71 (1999) 1215-1226.
• [6] S. V. Raj, A preliminary assessment of the properties of a chromium silicide alloy for aerospace application, Materials Science and Engineering A 192/193 (1995) 583-589.
• [7] E. Ström, J. Zhang, S. Eriksson, C. Li, D. Feng, The influence of alloying elements on phase constitution and microstructure of Mo3M2Si3 (M=Cr, Ti, Nb, Ni, or Co), Materials Science and Engineering A 329-331 (2002) 289-294.
• [8] M. Hansen, K. Anderko, Constitution of Binary Alloys, Mc Graw-Hill Book Comp., New York, 1958.
• [9] M. Cook, W. P. Fentiman, E. Davis, Observations on the structure and properties of wrought cooper-aluminiumnickel-iron alloys, Journal of the Institute of Metals 80 (1951/1952) 419-429.
• [10] K. P. Lebedev, L. S. Ranes, G. F. Ščemetev, A. D Gorjačev, Casting bronzes, Leningrad, 1973 (in Russian).