The possibility of irradiation damage affecting the rate-controlling mechanism of slip in body-centered cubic metals and solid solutions

Arsenault, R.J.

doi:10.1016/0001-6160(67)90049-1

Cited by 26 publications

(7 citation statements)

References 19 publications

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“…the lattice resistance to dislocation motion, or the Peierls stress, and the double-kink mechanism is the rate-controlling deformation mechanism [14,[20][21][22]. The theories of 'alloy softening' have been applied to 'irradiation softening', as both phenomena are associated with thermally-activated dislocation glide mechanisms [13,23]. There is a significant debate whether intrinsic or extrinsic factors dominate.…”

Section: Introductionmentioning

confidence: 99%

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Low-temperature thermally-activated deformation and irradiation softening in neutron-irradiated molybdenum

Byun

Snead

et al. 2008

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 99%

“…(8) and Peierls model 2 is Eq. (10)).The activation analysis indicates that the Fleischer model gave a better description of the activation process of the low-temperature deformation in irradiated Mo than the double-kink model.The temperature dependence of the effective stress can be calculated using the following equation of the Fleischer model[23]:…”

mentioning

confidence: 99%

Low-temperature thermally-activated deformation and irradiation softening in neutron-irradiated molybdenum

Byun

Snead

et al. 2008

Journal of Nuclear Materials

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“…Following neutron irradiation, there is relatively little change in the temperature dependence of the flow stress for polycrystalline b.c.c. vanadium [3] and iron [4, 5, 61. The large temperature dependence has been attributed to either the Peierls-Nabarro force [7, 81 or effects due to interstitial impurities or precipitates [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Neutron Irradiation on the Temperature Dependence of the Flow Stress for Niobium Single Crystals

Reed¹,

Guberman²,

Armstrong³

1970

Physica Status Solidi (b)

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Yield stress and strain-rate data were obtained in compression a t various temperatures. Niobium single crystals were tested both in the irradiation and unirradiated condition. The neutron irradiation largely affected the athermal component of the flow stress, however, it also induced a smaller but measurable increase in the thermal component of stress. The data indicate that increasing solute content effects an athermal strengthening similar to that of neutron irradiation.Fur Niobiumeinkristalle wurden die Streckgrenze und einige Daten aus Verformungsgeschwindigkeitswechselversuchen fur Kompression bei verschiedenen Temperaturen ermittelt. Sowohl bestrahlte als auch unbestrahlte Niobiumkristalle wurden untersucht. Die Neutronenbestrahlung beeinfluljt insbesondere die temperaturunabhangige Komponente der Flieljspannung. Fur die temperaturabhangige Komponente ergibt sich eine geringere, jedoch meljbare VergroOerung. Es zeigt sich, dalj geloste Verunreinigungen eine ahnliche athermische Verfestigung hervorrufen wie die Neutronenbestrahlung.

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“…metals and computer calculations indicate that the change should be small. (2) In considering the effect of neutron damage it is necessary to take into account the fact that the yield and flow stress have to be divided into two parts: the thermal component defined as the effective stress T*, and an athermal component x . The damage produced by neutron irradiation always causes an increase of T , and this increase is proportional to the interstitial impurity concentration and neutron dose.…”

Section: Introductionmentioning

confidence: 99%

Effect of Neutron Damage on the Dislocation Dynamics of BCC Metals and Solid Solutions at Low Temperatures.

Arsenault¹,

Pink²

1970

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IntroductionIt has demonstrated in the case of f.c.d. metals that neutron damage has a large effect on the dislocation dynamics,that is plastic flow. The neutron damage results in an increase in the yeild stress but more significantly it results in a large increase in the temperature dependency of the yield stress. (1) However, in the case of b.c.c. metals the evidence is not as convincing and predictions based on results obtained from neutron irradiated f.c.c. metals and computer calculations indicate that the change should be small. (2)

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The possibility of irradiation damage affecting the rate-controlling mechanism of slip in body-centered cubic metals and solid solutions

Cited by 26 publications

References 19 publications

Low-temperature thermally-activated deformation and irradiation softening in neutron-irradiated molybdenum

Low-temperature thermally-activated deformation and irradiation softening in neutron-irradiated molybdenum

Effect of Neutron Irradiation on the Temperature Dependence of the Flow Stress for Niobium Single Crystals

Effect of Neutron Damage on the Dislocation Dynamics of BCC Metals and Solid Solutions at Low Temperatures.

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