Metalurgi
Vol 26, No 3 (2011): Metalurgi Vol. 26 No. 3 Desember 2011

PRELIMINARY STUDY OF ELASTICITY ON BINARY ALLOY

Andika Widya Pramono (Pusat Penelitian Metalurgi - LIPI)
Anton Suryantoro (Pusat Penelitian Metalurgi - LIPI)



Article Info

Publish Date
18 May 2015

Abstract

Apabila setiap komponen dari suatu campuran logam memiliki modulus elastisitas atau struktur kisi (lattice structures)  yang  berbeda,  efek  elastis  akan berpengaruh  pada laju  coarsening serta  morfologi  fasa  yang terbentuk.  Dalam hal  ini  efek  mekanis  yang ditimbulkan  oleh fenomena  elastisitas  ini  lebih  dominan dibandingkan dengan laju difusi dari proses coarsening. Efek elastis mekanis ini kemudian dapat berpengaruh kepada sifat mekanis dari campuran logam tersebut. Makalah ini menyajikan gambaran awal bagaimana efek elastisitas tersebut dapat dikaji dengan menggunakan pendekatan elemen hingga (finite element) melalui penggunaan persamaan Cahn-Hilliard  yang  dilanjutkan dengan Persamaan Parabola Orde  Keempat.  Model Cahn Hilliard dengan efek elastisitas dikembangkan berdasarkan persamaan energi bebas Ginzburg–Landau yang merupakan fungsi dari perbedaan konsentrasi. AbstractIf the components of the mixture have different elastic moduli or different lattice structures, elastic effects might influence the rate of coarsening and the morphology of the particles. In this case the aspect of quasi-static equilibrium for the mechanical part is more predominant than the diffusion mechanism. The resulting elastic effects have a pronounced impact on the evolving coarsening morphology and hence on the material properties. This paper tries to give preliminary consideration on how this elastic behavior is analyzed through finite element approximation using Cahn Hiliard Approach followed by Fourth Order Nonlinear Degenerate Parabolic Equation. Cahn–Hilliard model with elastic contributions is based on a Ginzburg–Landau free energy which is a functional in terms of the concentration difference.

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Journal Info

Abbrev

metalurgi

Publisher

Subject

Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Description

The objective of this journal is the online media for disseminating results in Research and Development and also as a media for a scientist and researcher in the field of Metallurgy and Materials. The scope if this journal related on: Advanced materials and Nanotechnology Materials and Mineral ...