Thermal analysis and microstructure of master alloys used for modification of silumins

• Autorzy: Piątkowski J. , Szymszal J.
• Języki publikacji: EN

Abstrakty

EN

The study presents the technological backgrounds of the process of melting and casting Al-Co, Al-Ni, and Al-Ti master alloys, used as refiners of the microstructure of cast silumins. Basing on the analysis of phase equilibrium diagrams for an Al-Me (Co, Ni, Ti) system at a temperature of 900oC, the characteristic intermetallic phases of AlxMey were investigated. Due to their similarity with Al and Si in respect of both structure and lattice arrangement, these phases may act as heterogeneous nuclei and promote solution hardening during, e.g., heat treatment. Using the method of thermal analysis ATD, the temperature was plotted in function of time, and then the characteristic values of the solidification parameters of master alloys were read out from the respective curves.

Słowa kluczowe

EN

calorimetric analysis; enthalpy of melting; enthalpy of solidification; hypoeutectic silumins

PL

analiza kalorymetryczna; entalpia; silumin nadeutektyczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 3
• Strony: 129--132
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr.

Twórcy

autor

Piątkowski J.

autor

Szymszal J.

• Chair of Metal Alloys and Composites Engineering, Silesian University of Technology Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

• [1] S. Pietrowski, Silumines. Technical University of Łódź. 2001 (in Polish).
• [2] J. Piątkowski, The dissertation scientific paper. Silesian University of Technology, Katowice, 2000 (in Polish).
• [3] Z. Górny, J. Sobczak, Non-ferrous metals based novel materiale in foundry practice. ZA-PIS Cracow 2005 (in Polish).
• [4] S. Pietrowski, Complex silumin, Journal of Achievements in Materials and Manufacturing Engineering, (2007) Issue 1, vol. 24, p. 101-105.
• [5] M. Hansen, K. Anderko, Constitution of binary alloys, McGraw - Hill Book Company, INC, New York 1958.