A Theoretical Analysis of the Rheological Parameters Associated with DDRX

Frank Montheillet; David Piot

doi:10.4028/www.scientific.net/MSF.941.2257

Paper Titles

Superhydrophobic and Highly Oleophilic Polystyrene Fibers (PS) with Delayed Freezing Time and Effective Oil Adsorption
p.2232

New Sustainable Hybrid Porous Materials for Air Particulate Matter Trapping
p.2237

Synthesis of Fluorescent Ag Nanoclusters for Sensing and Imaging Applications
p.2243

Polymer Interphases in Adhesively Bonded Joints – Origin, Properties and Methods for Characterization
p.2249

A Theoretical Analysis of the Rheological Parameters Associated with DDRX
p.2257

The Avrami Kinetics of Dynamic Recrystallization in Nickel-Niobium Alloys
p.2264

Forensic Analyses of Stress-Strain Diagrams to Evaluate Contributions from Microstructure
p.2270

A Numerical Thermal Analysis of the Heating Process of Large Size Forged Ingots
p.2278

Prediction of Steel Transformation Temperatures Using Thermodynamic Modeling and Design of Experiments (DOE)
p.2284

HomeMaterials Science ForumMaterials Science Forum Vol. 941A Theoretical Analysis of the Rheological...

A Theoretical Analysis of the Rheological Parameters Associated with DDRX

Abstract:

The macroscopic strain rate sensitivity m and apparent activation energy Q are derived from their microscopic counterparts associated with strain hardening, grain boundary mobility, and nucleation rate in the case of steady state discontinuous dynamic recrystallization (DDRX). The case of solid solutions, involving effects of the solute concentration on strain hardening and boundary mobility, is also taken into consideration. Moreover, three distinct Derby exponents are introduced to refine the correlation between steady state flow stress and average grain size. Hot torsion data and micrographic observations on a set of nickel-niobium alloys are used to assess the predictions of this tentative approach.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 941)

Pages:

2257-2263

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.2257

Citation:

Cite this paper

Online since:

December 2018

Authors:

Frank Montheillet*, David Piot

Keywords:

Dynamic Recrystallization, Hot Working, Modelling, Rheological Parameters, Solid Solution

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] F. Montheillet, O. Lurdos and G. Damamme, A grain scale approach for modeling steady state discontinuous dynamic recrystallization, Acta Mater. 57 (2009) 1602-1612.

DOI: 10.1016/j.actamat.2008.11.044

Google Scholar

[2] F. Montheillet and J.J. Jonas, Models of recrystallization, in: D.U. Furrer, S.L. Semiatin (Eds), ASM Handbook, vol. 22A, Fundamentals of Modeling for Metals Processing, 2009, pp.220-231.

DOI: 10.31399/asm.hb.v22a.a0005403

Google Scholar

[3] N. Maatougui, D. Piot, M.L. Fares, F. Montheillet, S.L. Semiatin, Influence of niobium solutes on the mechanical behaviour of nickel during hot working, Mater. Sci. Eng. A 586 (2013) 350-357.

DOI: 10.1016/j.msea.2013.07.079

Google Scholar

[4] D. Piot, G. Smagghe, F. Montheillet, Modeling of grain boundary mobility and nucleation rate during discontinuous dynamic recrystallization in Ni-Nb alloys and a high purity alloy derived from SAE 304L, Materials Science Forum 879 (2017) 1501-1506.

DOI: 10.4028/www.scientific.net/msf.879.1501

Google Scholar

[5] J.W. Cahn, The impurity-drag effect in grain boundary motion, Acta Metall. 10 (1962) 789-798.

DOI: 10.1016/0001-6160(62)90092-5

Google Scholar

[6] B. Derby, Dynamic recrystallization: the steady state grain size, Scripta Metall. Mater. 27 (1992) 1581-1585.

DOI: 10.1016/0956-716x(92)90148-8

Google Scholar