Shape Factors of Spheroidal Precipitates for Stored Elastic and Interface Energies

10 Pages Posted: 5 Oct 2020

See all articles by H.J. Böhm

H.J. Böhm

Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology

J. Svoboda

Institute of Physics of Materials, Academy of Sciences of the Czech Republic

Franz Dieter Fischer

Montanuniversität Leoben - Institute of Mechanics

G.A. Zickler

Institute of Mechanics, Montanuniversität Leoben

Abstract

Improved treatment of thermodynamic modeling of precipitation kinetics makes it necessary to account for stored elastic and interface energy of non-spherical strengthening particles. The existing kinetic concepts available for spherical precipitates can directly be adapted to spheriodal precipitates by introducing shape factors, which may well approximate shapes differing from spheres. This paper provides shape factors for the stored elastic and interface energy within a wide range of aspect ratios as well as of elastic material properties.

Keywords: steels, precipitation, modeling, phase transformation kinetics, thermodynamics

Suggested Citation

Böhm, H.J. and Svoboda, J. and Fischer, Franz Dieter and Zickler, G.A., Shape Factors of Spheroidal Precipitates for Stored Elastic and Interface Energies. Available at SSRN: https://ssrn.com/abstract=3692026 or http://dx.doi.org/10.2139/ssrn.3692026

H.J. Böhm

Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology

J. Svoboda

Institute of Physics of Materials, Academy of Sciences of the Czech Republic

Franz Dieter Fischer (Contact Author)

Montanuniversität Leoben - Institute of Mechanics ( email )

Austria

G.A. Zickler

Institute of Mechanics, Montanuniversität Leoben

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