Article
Optimization of Microstructure Development During Hot Working Using Control Theory
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Document Type
Article
Publication Date
9-1-1997
Disciplines
Abstract
A new approach for controlling microstructure development during hot working processes is proposed. This approach is based on optimal control theory and involves state-space type models for describing the material behavior and the mechanics of the process. The effect of process control parameters such as strain, strain rate, and temperature on important microstructural features can be systematically formulated and then solved as an optimal control problem. This method has been applied to the optimization of grain size and process parameters such as die geometry and ram velocity during the extrusion of plain carbon steel. Experimental results of this investigation show good agreement with those predicted in the design stage.
DOI
10.1007/s11661-997-0122-6
Citation Information
James C. Malas, W. Garth Frazier, S. Venugopal, Enrique A. Medina, et al.. "Optimization of Microstructure Development During Hot Working Using Control Theory" Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science Vol. 28A Iss. 9 (1997) p. 1921 - 1930 ISSN: 1073-5623 Available at: http://works.bepress.com/raghavan_srinivasan/1/
Copyright © 1997 ASM International. This paper was published in Metallurgical and Materials Transactions A, Vol. 28A, pp. 1921-1930, and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.
Available on publisher's site at http://www.springerlink.com/content/4227269334416v43/