A statistical analysis of the influence of microstructure and twin–twin junctions on twin nucleation and twin growth in Zr

Juan, Pierre-Alexandre; Pradalier, Cédric; Berbenni, Sébastien; McCabe, Rodney J.; Tomé, Carlos N.; Capolungo, Laurent

doi:10.1016/j.actamat.2015.05.022

Cited by 55 publications

(3 citation statements)

References 32 publications

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“…It has been reported that {112 ̅ 1} twins forms frequently in HCP pure Zr [10], Ti [11] and Co [12,13] metals but not in pure Mg [26,27]. Note that all HCP metals that exhibit {112 ̅ 1} twinning mode have a c/a ratio smaller than the ideal value 1.633.…”

mentioning

confidence: 91%

Origin of profuse {112¯1} deformation twins in Mg-Gd alloys

Kong

et al. 2021

Scripta Materialia

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confidence: 91%

Origin of profuse {112¯1} deformation twins in Mg-Gd alloys

Kong

et al. 2021

Scripta Materialia

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“…The Schmid factor of the twinning system has a more significant effect on twin nucleation than twin thickening in magnesium alloy [23]. Twin nucleation and growth are not affected by dislocation slip during twinning deformation [24]. Researchers carried out studies on the grain size effect of metal crystals such as Zr [25], Ti and AZ31(Mg-Al3%-Zn0.9% alloy) [26,27] and pointed out that the influence of grain size effect on the nucleation pattern and growth mechanism of each twin is greatly different during deformation.…”

Section: Introductionmentioning

confidence: 97%

Statistical Analysis of Grain-Scale Effects of Twinning Deformation for Magnesium Alloys under Cyclic Strain Loading

Wang

Lan

et al. 2020

Materials

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To reveal the relationship between grain size and twinning deformation of magnesium alloys under cyclic strain, this study carried out a group of strain-controlled low-cycle fatigue experiments and statistical analysis of microstructures. Experimental results show that the shape of the hysteresis loop exhibits significant asymmetry at different strain amplitudes, and the accumulation of residual twins plays an important role in subsequent cyclic deformation. For the different strain amplitudes, the statistical distribution of the grain size of magnesium alloy approximately follows the Weibull probability function distribution, while the statistical distribution of twin thickness is closer to that of Gaussian probability function. The twin nucleation number (TNN) increases with the increase of grain size, but there is no obvious function relationship between twin thickness and grain size. Twin volume fraction (TVF) increases with the increase of grain size, which is mainly due to the increase of TNN. This work can provide experimental evidence for a more accurate description of the twinning deformation mechanism.

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“…Especially, the {10-12} tension twin plays an essential role in the hcp structure due to it has lower critical resolved shear stress (CRSS) [8]. Moreover, it found that this kind of twin directly affects the mechanical properties of zirconium alloys [9]. Therefore, it is worth investigating the interaction of these nonemetallic solutes with {10-12} tension twin.…”

Section: Introductionmentioning

confidence: 99%

Effect of nonmetallic solutes on the stability of {10–12} tension twin boundary of zirconium: a first-principles study

Pan

Tang

et al. 2019

Eur. Phys. J. B

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Effect of nonmetallic solutes on {10-12} tension twin boundary (TB) are investigated using firstprinciples calculations. Fourteen kinds of interstitial sites near the {10-12} tension TB for four nonmetallic solutes such as C, N, O, and H are considered. The results show that the C and O atoms are much easier to segregate from the {10-12} tension TB to the octahedral site 1, causing the {10-12} tension TB more stable. The N atom is much easier to segregate from the {10-12} tension TB to the octahedral site 4, causing the {10-12} tension TB more stable. The H atom is much easier to segregate from the {10-12} tension TB to these 14 interstitial positions, causing the {10-12} tension TB more stable. The effect of C, N, or O atom on the stability of {10-12} tension TB is greater than that of H atom.

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A statistical analysis of the influence of microstructure and twin–twin junctions on twin nucleation and twin growth in Zr

Cited by 55 publications

References 32 publications

Origin of profuse {112¯1} deformation twins in Mg-Gd alloys

Origin of profuse {112¯1} deformation twins in Mg-Gd alloys

Statistical Analysis of Grain-Scale Effects of Twinning Deformation for Magnesium Alloys under Cyclic Strain Loading

Effect of nonmetallic solutes on the stability of {10–12} tension twin boundary of zirconium: a first-principles study

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