Influence of misfit stress relaxation by power-law creep and plasticity on kinetics of coarsening of precipitates

Jiri Svoboda; Shan Yao; Ernst Kozeschnik; Franz-Dieter Fischer

doi:10.1016/j.scriptamat.2019.04.016

Influence of misfit stress relaxation by power-law creep and plasticity on kinetics of coarsening of precipitates

Jiri Svoboda
, Shan Yao
, Ernst Kozeschnik
, Franz-Dieter Fischer

Chair of Mechanics (400)

Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province)
Institute of Materials Science and Technology
Institute of Physics of Materials of the Academy of Sciences of the Czech Republic

Research output: Contribution to journal › Article › Research › peer-review

1 Citation (Scopus)

Abstract

Influence of coarsening of precipitates on creep in metals and alloys has been studied experimentally and modelled in the past. However, a proper model to understand the role of plasticity and creep in the matrix to the kinetics of coarsening of misfitting precipitates is still missing. Such a model is developed based on a thermodynamic approach utilizing earlier solutions of mechanical interactions between the misfitting precipitates and the matrix. Numerical simulations demonstrate a significant retardation of the coarsening process controlled by power-law creep in the matrix within a wide range of its activity.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Scripta materialia
Volume	2019
Issue number	Vol.168
DOIs	https://doi.org/10.1016/j.scriptamat.2019.04.016
Publication status	Published - 15 Jul 2019

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© 2019 Acta Materialia Inc.

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abstract = "Influence of coarsening of precipitates on creep in metals and alloys has been studied experimentally and modelled in the past. However, a proper model to understand the role of plasticity and creep in the matrix to the kinetics of coarsening of misfitting precipitates is still missing. Such a model is developed based on a thermodynamic approach utilizing earlier solutions of mechanical interactions between the misfitting precipitates and the matrix. Numerical simulations demonstrate a significant retardation of the coarsening process controlled by power-law creep in the matrix within a wide range of its activity.",

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AU - Svoboda, Jiri

AU - Yao, Shan

AU - Kozeschnik, Ernst

AU - Fischer, Franz-Dieter

PY - 2019/7/15

Y1 - 2019/7/15

N2 - Influence of coarsening of precipitates on creep in metals and alloys has been studied experimentally and modelled in the past. However, a proper model to understand the role of plasticity and creep in the matrix to the kinetics of coarsening of misfitting precipitates is still missing. Such a model is developed based on a thermodynamic approach utilizing earlier solutions of mechanical interactions between the misfitting precipitates and the matrix. Numerical simulations demonstrate a significant retardation of the coarsening process controlled by power-law creep in the matrix within a wide range of its activity.

AB - Influence of coarsening of precipitates on creep in metals and alloys has been studied experimentally and modelled in the past. However, a proper model to understand the role of plasticity and creep in the matrix to the kinetics of coarsening of misfitting precipitates is still missing. Such a model is developed based on a thermodynamic approach utilizing earlier solutions of mechanical interactions between the misfitting precipitates and the matrix. Numerical simulations demonstrate a significant retardation of the coarsening process controlled by power-law creep in the matrix within a wide range of its activity.

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DO - 10.1016/j.scriptamat.2019.04.016

M3 - Article

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EP - 85

JO - Scripta materialia

JF - Scripta materialia

IS - Vol.168

ER -

Influence of misfit stress relaxation by power-law creep and plasticity on kinetics of coarsening of precipitates

Abstract

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