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Title: Modelling of Viscoplastic Behaviour of IN718 Under Hot Forging Conditions

Abstract

The mechanical properties of IN718 are directly related to microstructure such as grain size and the hardening mechanisms, which are effective during thermomechanical processing and subsequent heat treatment. In this study a set of unified viscoplastic constitutive equations were determined for IN718 from experimental data of hot forging conditions. Techniques were developed to analyse the reliability and consistency of the experimental data derived from different previous publications. In addition to viscoplastic flow of the material, the determined material model can be used to predict the evolution of dislocations, recrystallisation and grain size occurring during thermomechanical processing.

Authors:
; ;  [1];  [2]
  1. Department of Mechanical and Manufacturing Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)
  2. Rolls-Royce plc, PO Box31, Derby DE24 8BJ (United Kingdom)
Publication Date:
OSTI Identifier:
21056979
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729677; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPUTERIZED SIMULATION; DISLOCATIONS; FORGING; GRAIN SIZE; HARDENING; NICKEL ALLOYS; PLASTICITY; PROCESSING; RECRYSTALLIZATION; RELIABILITY; THERMOMECHANICAL TREATMENTS; VISCOSITY

Citation Formats

Lin, Y. P., Lin, J., Dean, T. A., and Brown, P. D.. Modelling of Viscoplastic Behaviour of IN718 Under Hot Forging Conditions. United States: N. p., 2007. Web. doi:10.1063/1.2729677.
Lin, Y. P., Lin, J., Dean, T. A., & Brown, P. D.. Modelling of Viscoplastic Behaviour of IN718 Under Hot Forging Conditions. United States. doi:10.1063/1.2729677.
Lin, Y. P., Lin, J., Dean, T. A., and Brown, P. D.. Sat . "Modelling of Viscoplastic Behaviour of IN718 Under Hot Forging Conditions". United States. doi:10.1063/1.2729677.
@article{osti_21056979,
title = {Modelling of Viscoplastic Behaviour of IN718 Under Hot Forging Conditions},
author = {Lin, Y. P. and Lin, J. and Dean, T. A. and Brown, P. D.},
abstractNote = {The mechanical properties of IN718 are directly related to microstructure such as grain size and the hardening mechanisms, which are effective during thermomechanical processing and subsequent heat treatment. In this study a set of unified viscoplastic constitutive equations were determined for IN718 from experimental data of hot forging conditions. Techniques were developed to analyse the reliability and consistency of the experimental data derived from different previous publications. In addition to viscoplastic flow of the material, the determined material model can be used to predict the evolution of dislocations, recrystallisation and grain size occurring during thermomechanical processing.},
doi = {10.1063/1.2729677},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}