Tensile testing study of dynamic interactions between dislocations and precipitate in vanadium alloys

Tougou, Kouichi; Nogiwa, Kimihiro; Tachikawa, Kazuhiro; Fukumoto, Ken-ichi

doi:10.1016/j.jnucmat.2012.10.043

Cited by 17 publications

(4 citation statements)

References 17 publications

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“…While the generation of debris and hair-pin dislocations could not be observed in the in-situ TEM observation experiment for dislocation interaction with Ti(OCN) precipitate in V4Cr4Ti alloys in our previous study, 22) therefore the generation of cross-slip is one of intrinsic feature of dislocation interaction with cavity structure. When the cavity size becomes larger, cavity surface provides the generation of eager cross-slip and local climb and lead to generate jog segment on split dislocations as shown in Fig.…”

Section: Cross-slip Generation For Large Cavitycontrasting

confidence: 56%

In-Situ TEM Observation of Dislocation Interaction with Cavity in Ion-Irradiated Pure Vanadium during Tensile Test

et al. 2013

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To investigate the hardening mechanism due to cavity formation in vanadium, in-situ transmission electron microscopy (TEM) observation was performed for the helium ion-irradiated pure vanadium during tensile test. The obstacle barrier strength ¡ was calculated from the bow-out dislocation based on line tension model and the obstacle barrier strength of cavity in pure vanadium was about 0.5 to 0.7 and slightly increased with increasing the cavity size. Generations of cross-slip and double cross-slip occurred with jog generating after the interaction between dislocations and cavities. The fraction of cross-slip and double cross-slip at dislocation pinning were increased with the increasing cavity size and it is suggested that the cross-slip of dislocation can be formed at cavity due to local climb motion of dislocation on the cavity surface.

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Section: Cross-slip Generation For Large Cavitycontrasting

confidence: 56%

In-Situ TEM Observation of Dislocation Interaction with Cavity in Ion-Irradiated Pure Vanadium during Tensile Test

et al. 2013

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“…The method of determination of the slip system was explained in detail in Refs. [1,12]. The slip system was assumed to be in the <11-1>, <111> directions, with {011}, {-110} or {112}, {-1-12} planes under this experimental condition.…”

Section: Methodsmentioning

confidence: 99%

In-situ TEM observation of dynamic interaction between dislocation and cavity in BCC metals in tensile deformation

Tougou

Shikata

Kawase

et al. 2015

Journal of Nuclear Materials

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“…6, there exists evident orientation relationship between precipitates and the matrix, indicating the coherent and penetrable precipitates. Tougou et al [43] analyzed the obstacle strength of Ti(CON) precip-itates in V-4Cr-4Ti alloy via in situ TEM observations and determined the average obstacle strength as a = 0.3, which is taken in this study.…”

Section: Discussionmentioning

confidence: 99%

Effects of titanium concentration on microstructure and mechanical properties of high-purity vanadium alloys

et al. 2022

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Tensile testing study of dynamic interactions between dislocations and precipitate in vanadium alloys

Cited by 17 publications

References 17 publications

<i>In</i>-<i>Situ</i> TEM Observation of Dislocation Interaction with Cavity in Ion-Irradiated Pure Vanadium during Tensile Test

<i>In</i>-<i>Situ</i> TEM Observation of Dislocation Interaction with Cavity in Ion-Irradiated Pure Vanadium during Tensile Test

In-situ TEM observation of dynamic interaction between dislocation and cavity in BCC metals in tensile deformation

Effects of titanium concentration on microstructure and mechanical properties of high-purity vanadium alloys

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