Macrostructure modeling of Al-20 % Sn alloy

Authors

P Padhi
AK Sahoo
S Kar

Publication Date

2013-07-01

Abstract

In metallic alloys, the formation of macrostructure involves different length and time scales. The macrostructure strongly influences the mechanical properties of the materials. Modeling of macrostructure provides valuable insights for tailoring of the structure. In the present study simulation of macrostructure in Al-20Sn has been carried out. Expression for nucleation rate and growth rate were tuned to get a match with the experimentally observed macrostructure. The study incorporates the motion of grains due to Brownian motion. Incorporation of Brownian motion resulted in more uniform distribution locally, which has been experimentally observed. Both simulation and macrograph showed few columnar grains and absence of sharp columnar to equiaxed transition.

First Page

79

Last Page

83

Recommended Citation

Padhi, P; Sahoo, AK; and Kar, S (2013) "Macrostructure modeling of Al-20 % Sn alloy," Journal of Metals, Materials and Minerals: Vol. 23: No. 1, Article 13.
Available at: https://digital.car.chula.ac.th/jmmm/vol23/iss1/13