Skip to Main content Skip to Navigation
Journal articles

Effects of Compression Tests on Point Defects in Pure Ni and Ni-16wt%Cr Model Alloys

Abstract : On Ni and Ni-16wt%.Cr model-alloys compressed at 30 % and 60 % deformation, point-defects and dislocations concentrations are respectively characterized by positron annihilation spectroscopy and x-ray diffraction analysis. The positron results show that only mono-vacancies are formed during compressive test The X-ray results allows us to quantify the dislocation concentration in the systems. Saturation of defect densities is observed in measurements for these high deformation rates. In support to the experimental work, an homogeneous kinetic model is used to characterize point-defect – dislocation interactions to estimate the kinetics of vacancy restoration to equilibrium concentration.
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-02389711
Contributor : Amplexor Amplexor <>
Submitted on : Monday, December 2, 2019 - 4:07:00 PM
Last modification on : Thursday, June 25, 2020 - 2:54:34 PM

Identifiers

Citation

Patrick Ganster, A. Borbely, V. Barnier, Pierre Desgardin, M.F. Barthe, et al.. Effects of Compression Tests on Point Defects in Pure Ni and Ni-16wt%Cr Model Alloys. Defect and Diffusion Forum, Trans Tech Publications, 2015, 363, pp.202-209. ⟨10.4028/www.scientific.net/DDF.363.202⟩. ⟨cea-02389711⟩

Share

Metrics

Record views

62