Effects on neutron irradiation on the yield strength and grain size relationship in iron and iron–carbon alloys

Chow, J.G.Y.; McRickard, S. B.

doi:10.1080/14786436308209101

Cited by 6 publications

(1 citation statement)

References 4 publications

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“…Following irradiation, the induced defects also act to hinder dislocation motion, further increasing the yield strength through friction hardening (also called lattice hardening) [63,64,89]. This finding is in line with early works on neutron irradiated iron and steels [90,91]. Cr atoms further enhance the friction hardening from irradiation defects by increasing the retention of irradiation-induced defects, causing a larger rate of increase of yield strength following irradiation for materials with high Cr content (Fig.…”

Section: Characterising Behaviour In the Initial Stages Of Deformationsupporting

confidence: 69%

Deformation behaviour of ion-irradiated FeCr: A nanoindentation study

Song

Karamched

et al. 2022

Journal of Materials Research

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Understanding the mechanisms of plasticity in structural steels is essential for the operation of next-generation fusion reactors. This work on the deformation behaviour of FeCr, focusses on distinguishing the nucleation of dislocations to initiate plasticity, from their propagation through the material. Fe3Cr, Fe5Cr, and Fe10Cr were irradiated with 20 MeV Fe3+ ions at room temperature to doses of 0.008 dpa and 0.08 dpa. Nanoindentation was then carried out with Berkovich and spherical indenter tips. Our results show that the nucleation of dislocations is mainly from pre-existing sources, which are not significantly affected by the presence of irradiation defects or Cr%. Yield strength, an indicator of dislocation mobility, increases with irradiation damage and Cr content, while work hardening capacity decreases mainly due to irradiation defects. The synergistic effects of Cr and irradiation damage in FeCr appear to be more important for the propagation of dislocations than for their nucleation. Graphical abstract

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Section: Characterising Behaviour In the Initial Stages Of Deformationsupporting

confidence: 69%