Papers by Keyword: Monotectic

Abstract: By using the thermodynamic equations, the ESTPHAD (Estimation of Phase Diagrams) method developed by us has been made suitable for calculating the immiscibility gap of monotectic systems. 2 special parameters were introduced in the basic equation of ESTPHAD which ensure the description of the characteristics of monotectic curve on the basis of the boundary conditions created by us. By means of the monotectic ESTPHAD equation, the equations of separation temperatures of monotectic parts in the Zn-Bi and Al-Bi systems were calculated (with an accuracy of +/- 10K) on the basis of the reference data.

Abstract: The growing importance of Al-Sn based alloys for producing self lubricating bearing materials in automotive industries necessitates the development of new alloys for improved performance. The recent thermodynamic work by Schmid-Fetzer at Clausthal University of Technology predicted that the addition of Cu to the binary Al-Sn system makes the miscibility gap stable. With the guidance of the calculated phase diagram, experimental investigations were conducted on the ternary Al-Sn-Cu system to understand the solidification behaviour of this immiscible system under intensive forced convection. The experimental focus was to investigate the effects of shear rate, shearing temperature and cooling rate on the solidified microstructure.