The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2001
Filed:
Apr. 02, 1998
James C. Malas, Bellbrook, OH (US);
W. Garth Frazier, Xenia, OH (US);
Enrique A. Medina, Xenia, OH (US);
Venkat Seetharaman, Beavercreek, OH (US);
S. Venugopal, Fairborn, OH (US);
R. Dennis Irwin, Athens, OH (US);
William M. Mullins, Dayton, OH (US);
Steven C. Medeiros, Fairborn, OH (US);
Anil Chaudhary, Centerville, OH (US);
Raghavan Srinivasan, Beavercreek, OH (US);
The United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
A method for predicting process parameters for optimization and control of microstructure in metal and alloy products of hot working fabrication processes is described. The method uses state-space material behavior models and hot deformation process models for calculating optimal strain, strain rate and temperature trajectories for processing the material. Using the optimal trajectories and appropriate optimality criteria, suitable process parameters such as ram velocity and die profile for processing the material are determined to achieve prescribed strain, strain rate and temperature trajectories.