Mechanical Aspects of Plastic Deformation of Nickel Based Superalloy

Andrzej Nowotnik; Paweł Rokicki; Paweł Pędrak; Slawomir Kotowski; Jan Sieniawski; Grazyna Mrówka-Nowotnik

doi:10.4028/www.scientific.net/KEM.592-593.724

Paper Titles

Microstructural Aspects of Low Cycle Fatigue of Aged GX12CrMoVNbN9-1 Cast Steel
p.708

Fatigue Fracture of Turbine Blades: Case Studies
p.712

Bending Fatigue Behaviour of Diffusion and Thermal Barrier Coating Systems
p.716

Nanoindentation and Microstructural Study of Cu-Co Alloys after Severe Plastic Deformation
p.720

Mechanical Aspects of Plastic Deformation of Nickel Based Superalloy
p.724

Relations between Microstructure and Mechanical Properties in Laminated Ti-Intermetallic Composites Synthesized Using Ti and Al Foils
p.728

Fatigue Cracking and Acoustic Emission Regularities in Metals: Crack Origination and Growth
p.735

Deformation Behaviour of Asymmetrically Fatigue Cycled Metallic Materials
p.741

An Effect of the First Non-Singular Term of the Williams Asymptotic Expansion to the Stability of the Bi-Material Orthotropic Notch
p.745

HomeKey Engineering MaterialsKey Engineering Materials Vols. 592-593Mechanical Aspects of Plastic Deformation of...

Mechanical Aspects of Plastic Deformation of Nickel Based Superalloy

Abstract:

Variations of a true stress vs. true strain illustrate behaviour of materials during plastic deformation. Stress-strain relationship is generally evaluated by a torsion, compression and tensile tests. Results of these tests provide crucial information pertaining to the stress values which are necessary to run deformation process at specified temperature and cooling rate. Uniaxial compression tests at temperatures below the γ solvus were conducted on nickel based superalloy CMSX-4, to study the effect of temperature and strain rate on its flow stress. On the basis of received flow stress values activation energy of a high-temperature deformation process was estimated. Mathematical dependences (σ_pl -T i σ_pl - ἐ) and compression data were used to determine material constants. These constants allow to derive a formula that describes the relationship between strain rate, deformation temperature and true stress.

You might also be interested in these eBooks

Materials Structure & Micromechanics of Fracture VII

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

724-727

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.592-593.724

Citation:

Cite this paper

Online since:

November 2013

Authors:

Andrzej Nowotnik, Paweł Rokicki, Paweł Pędrak, Slawomir Kotowski, Jan Sieniawski, Grazyna Mrówka-Nowotnik

Keywords:

CMSX-4, Dilatometry, Nickel-Based Superalloy, Severe Plastic Deformation

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] H. MC QUEEN: Dynamic recovery and its relation to other restoration mechanisms. Zeszyty naukowe AGH, Metalurgia i Odlewnictwo, Kraków 3(1979)8, 421-450.

Google Scholar

[2] T. SAKAI, J.J. JONAS: Dynamic recrystallization: mechanical and microstructural consideration. Acta Metallurgica, 32(1984)189-208.

DOI: 10.1016/0001-6160(84)90049-x

Google Scholar

[3] F. GROSMAN: Problemy doboru naprężenia uplastyczniającego do programów komputerowej symulacji procesów przeróbki plastycznej. Materiały Konferencyjne Plastyczność materiałów, Ustroń (1996)11-18.

Google Scholar

[4] F. GROSMAN: Kryteria doboru charakterystyk technologicznej plastyczności materiałów do symulacji procesów obróbki plastycznej. Mat. XVI Międzynarodowej Konf. Naukowo-Technicznej Konstrukcja i technologia wytłoczek i wyprasek,. Poznań-Wąsowo (2004).

Google Scholar

[5] A. NOWOTNIK, L. BŁAŻ, J. SIENIAWSKI: Interaction of phase transformation and deformation process during hot deformation of 0. 16%C steel, Defect and Diffusion Forum, 237-240(2005)1240-1245.

DOI: 10.4028/www.scientific.net/ddf.237-240.1240

Google Scholar