Microstructure Evolution Simulation during Microextrusion at Elevated Temperature

DOI

10.2991/icmsa-15.2015.43How to use a DOI?

Keywords

Microextrusion, Elevated Temperature, Microstructure Evolution, Finite Element Method.

Abstract

Controlling the microstructure in the final product is significant to metal hot forming at either macroscale or microscale. The microstructure evolution during the hot forming must be fundamentally understood in order to control the microstructure. Elevated temperature contributes to minimize the size-effects of microforming processes and also enlarge the forming limits by microforming. Recrystallization and grain growth during microextrusion at elevated temperature followed by air-cooling were studied using conventional recrystallization theory models and finite element methods. The results showed the microstructure distribution in the extruded billet can be rationally predicted based on the conventional recrystallization theory models. The simulation of the grain size distribution agreed with the experiment. A larger extrusion ratio, a faster extrusion speed and a refiner initial grain all help to obtain a smaller grain size and a more homogeneous grain distribution in the extruded billet.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - S. Chen
AU  - F. Chen
AU  - L.J. Zhang
AU  - X.H. Huang
AU  - X.Y. Ding
AU  - X.P. Zhang
PY  - 2014/06
DA  - 2014/06
TI  - Microstructure Evolution Simulation during Microextrusion at Elevated Temperature
BT  - Proceedings of the 2015 International Conference on Material Science and Applications
PB  - Atlantis Press
SP  - 229
EP  - 234
SN  - 2352-541X
UR  - https://doi.org/10.2991/icmsa-15.2015.43
DO  - 10.2991/icmsa-15.2015.43
ID  - Chen2014/06
ER  -