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2015 | 128 | 4 | 629-632
Article title

Tool Steels: Forging Simulation and Microstructure Evolution of Large Scale Ingot

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EN
Abstracts
EN
The aim of this paper is to analyze the hot working behavior of two different steels based on 3% and 5% Cr steel chemistry, respectively. Hot deformation is studied by hot torsion tests in the range of temperatures 1000-1200°C and strain rates 0.01, 0.10, 1.00 s^{-1}. At given temperatures and strain rates flow curves exhibit a peak followed by a decline towards a steady state which is indicative of dynamic recrystallization. At constant strain, flow stress increases with increasing strain rate and decreasing temperature. The analysis of the constitutive equation relating peak flow stress, strain rate and temperature shows high activation energy values for both steels. Recrystallized volume fraction of steels after hot deformation is estimated based on the grain orientation spread as measured by electron backscattered diffraction technique, on the hot deformed and quenched materials.
Keywords
EN
Contributors
author
  • Università degli Studi di Perugia, Via G. Duranti 63, I06125 Perugia, Italy
author
  • Università degli Studi di Perugia, Via G. Duranti 63, I06125 Perugia, Italy
author
  • Società delle Fucine, Viale B. Brin 218, I05100 Terni, Italy
  • Società delle Fucine, Viale B. Brin 218, I05100 Terni, Italy
author
  • Centro Sviluppo Materiali S.p.A., Via di Castel Romano 100, I00128 Roma, Italy
author
  • Concordia University, 1455 Maisonneuve W. EV 3.420, Montreal, H3G 1M8, Canada
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv128n438kz
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