Compressive Properties of ⟨110⟩ Cu Micro-Pillars after High-Dose Self-Ion Irradiation

Sharon, John Anthony; Hattar, Khalid Mikhiel; Boyce, Brad Lee; Brewer, Luke N.

doi:10.1080/21663831.2013.859179

Cited by 24 publications

(4 citation statements)

References 39 publications

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“…Small scale mechanical testing is ideally suited for systematic investigations of ion irradiation-mediated mechanical behavior, since ion penetration depths are often in the nano-and micrometer range. Miniaturized testing thus avoids complex interpretation of results obtained from irradiated bulk samples, which inevitably display gradients in defect densities across specimen dimensions [33][34][35]. Moreover, quantitative in situ approaches enable direct correlations between measured response and plastic instabilities governed by dislocation radiation-induced defect interactions.…”

Section: Introductionmentioning

confidence: 97%

In situ measurements of a homogeneous to heterogeneous transition in the plastic response of ion-irradiated 〈1 1 1〉 Ni microspecimens

et al. 2015

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We report on the use of quantitative in situ microcompression experiments in a scanning electron microscope to systematically investigate the effect of self-ion irradiation damage on the full plastic response of h1 11i Ni. In addition to the well-known irradiation-induced increases in the yield and flow strengths with increasing dose, we measure substantial changes in plastic flow intermittency behavior, manifested as stress drops accompanying energy releases as the driven material transits critical states. At low irradiation doses, the magnitude of stress drops reduces relative to the unirradiated material and plastic slip proceeds on multiple slip systems, leading to quasi-homogeneous plastic flow. In contrast, highly irradiated specimens exhibit pronounced shear localization on parallel slip planes, which we ascribe to the onset of defect free channels normally seen in bulk irradiated materials. Our in situ testing system and approach allows for a quantitative study of the energy release and dynamics associated with defect free channel formation and subsequent localization. This study provides fundamental insight into the nature of interactions between mobile dislocations and irradiation-mediated and damage-dependent defect structures.

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Section: Introductionmentioning

confidence: 97%

In situ measurements of a homogeneous to heterogeneous transition in the plastic response of ion-irradiated 〈1 1 1〉 Ni microspecimens

et al. 2015

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“…However, when subjected to irradiation, austenitic steels harden due to the formation of defect clusters that act as obstacles to dislocation motion under an applied stress 6 . Depending on the material, irradiation temperature, and stacking fault energy of the system, these defect clusters can manifest themselves as stacking fault tetrahedra (SFT) and dislocation loops [7][8] . Furthermore, irradiation induced hardening results in a decrease in ductility, which has been well characterized in metals 9 .…”

Section: Introductionmentioning

confidence: 99%

Characterization of ion beam irradiated 304 stainless steel utilizing nanoindentation and Laue microdiffraction

Lupinacci

Chen

et al. 2015

Journal of Nuclear Materials

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Characterizing irradiation damage in materials utilized in light water reactors is critical for both material development and application reliability. Here we use both nanoindentation and Laue micro diffraction to characterize both the mechanical response and microstructure evolution due to irradiation. Two different irradiation conditions were considered in 304 stainless steel: 1dpa and 10 dpa. In addition, an annealed condition of the 10 dpa specimen for 1 hour at 500 °C was evaluated. Nanoindentation revealed an increase in hardness due to irradiation and also revealed that hardness saturated in the 10 dpa case. Broadening using Laue micro diffraction peaks indicates a significant lattice strain in the irradiated area that is in good agreement with both the SRIM calculations and the nanoindentation results.

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“…All in-plane samples also exhibited global failure on planes inclined with respect to the compression axis, as is signified by the red arrows in Fig. 3 e and f. This behavior is analogous to catastrophic shearing in fully dense materials [ 31 , 32 ].…”

Section: Resultsmentioning

confidence: 63%

Local strain quantification of a porous carbon fiber network material

Quammen,

Rottmann

2024

Heliyon

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Compressive Properties of ⟨110⟩ Cu Micro-Pillars after High-Dose Self-Ion Irradiation

Cited by 24 publications

References 39 publications

In situ measurements of a homogeneous to heterogeneous transition in the plastic response of ion-irradiated 〈1 1 1〉 Ni microspecimens

In situ measurements of a homogeneous to heterogeneous transition in the plastic response of ion-irradiated 〈1 1 1〉 Ni microspecimens

Characterization of ion beam irradiated 304 stainless steel utilizing nanoindentation and Laue microdiffraction

Local strain quantification of a porous carbon fiber network material

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