Nonisothermal Constitutive Model for the Small Strain Behavior of 9Cr-1 Mo-V-Nb Pressure Vessel Steel

[+] Author and Article Information
J. C. Moosbrugger

Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, N.Y. 13699

J. Eng. Mater. Technol 114(4), 354-361 (Oct 01, 1992) (8 pages) doi:10.1115/1.2904185 History: Received July 31, 1991; Revised May 02, 1992; Online April 29, 2008


A viscoplastic constitutive model characterization is presented for the small strain, nonisothermal behavior of a 9Cr-1Mo-V-Nb pressure vessel steel between 25°C and 600°C. A framework based on previously proposed viscoplastic models is reviewed. The technique for including deformation softening is discussed and the procedure used to determine model constants and parameters is presented. Results of model integration are compared with various isothermal and nonisothermal, uniaxial test results.

Copyright © 1992 by The American Society of Mechanical Engineers
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