Modelling and simulation of dynamic recrystallization (DRX) in OFHC copper at very high strain rates
Paper in proceeding, 2017

At high strain rates, deformation processes are essentially adiabatic and if the plastic work is large enough dynamic recrystallization can occur. In this work, an examination on microstructure evolution of OFHC copper in Dynamic Tensile Extrusion (DTE) test, performed at 400 m/s, was carried out. EBSD investigations, along the center line of the fragment remaining in the extrusion die, showed a progressive elongation of the grains, and an accompanying development of a strong < 001 > + < 111 > dual fiber texture. Discontinuous dynamic recrystallization (DRX) occurred at larger strains, and it was showed that nucleation occurred during straining. A criterion for DRX to occur, based on the evolution of Zener-Hollomon parameter during the dynamic deformation process, is proposed. Finally, DTE test was simulated using the modified Rusinek-Klepaczko constitutive model incorporating a model for the prediction of DRX initiation.


Gabriel Testa

Universita di Cassino e del Lazio Meridionale

Nicola Bonora

Universita di Cassino e del Lazio Meridionale

Andrew Ruggiero

Universita di Cassino e del Lazio Meridionale

G. Iannitti

TECHDYN Engineering

Italo Peresechino

Universita di Cassino e del Lazio Meridionale

Magnus Hörnqvist

Chalmers, Physics, Materials Microstructure

Nooshin Mortazavi Seyedeh

Chalmers, Physics, Materials Microstructure

AIP Conference Proceedings

0094-243X (ISSN) 1551-7616 (eISSN)

Article number 100034- 100034
978-073541457-0 (ISBN)

Subject Categories

Mechanical Engineering

Other Materials Engineering

Areas of Advance

Materials Science





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