Second-order faceting–roughening of the tilt grain boundary in zinc
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Boris B. Straumal
, Alena S. Gornakova , Vera G. Sursaeva and Viktor P. Yashnikov
Abstract
The faceting of the almost stationary tilt grain boundary with a misorientation angle of 84° in the Zn bicrystal has been investigated. The shape of the very slow migrating grain boundary has been studied in situ between 350 and 400 °C using polarized light. Two intersecting facets lie in the closely-packed planes of the constrained coincidence sites lattice with coincidence parameter = 15. In the as-grown sample flat grain boundary facets form the sharp first-order ridge with the break of the first derivative y/x of the grain boundary shape similar to those observed in our previous works on GB faceting in Zn. However, above 350 °C the sharp first-order ridge is substituted by the smooth grain boundary portion without a ∂y/∂x derivative break similar to that observed in twin grain boundaries in Mo. The transformation of the as-grown first-order grain boundary ridge into continuous one has been observed for the first time. The critical parameter α has been calculated using the grain boundary shape in the transition region. α increases from α = 1.7 ± 0.07 for 350 °C to α = 1.9 ± 0.07 for 385 °C approaching the α = 2 value predicted in the mean-field Andreev model for the continuous surface roughening.
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© 2009, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Editorial
- Prof. Dr. Günter Gottstein
- Feature
- Interface Migration in Metals (IMM):“Vingt Ans Après” (Twenty Years Later)
- Basic
- On the solute-defect interaction in the framework of a defactant concept
- A new model of dynamic recovery for Stage III of pure fcc metals without cross slip
- Sequence of distinct microyielding stages of the monocrystalline nickel-base superalloy CMSX-6 at high temperatures
- Comparison of texture evolution in fcc metals predicted by various grain cluster homogenization schemes
- Recrystallization initiated by low-temperature grain boundary motion coupled to stress
- Sub-grain boundary mobilities during recovery of binary Al–Mn alloys
- Concentration phase transition associated with grain boundary segregation in systems with restricted solubility
- Second-order faceting–roughening of the tilt grain boundary in zinc
- A model of grain boundary diffusion in polycrystals with evolving microstructure
- Linear measures for polyhedral networks
- Testing a curvature driven moving finite element grain growth model with the generalized three dimensional von Neumann relation
- Grain-boundary source/sink behavior for point defects: An atomistic simulation study
- Applied
- Deformation modes and anisotropy in magnesium alloy AZ31
- Control of recrystallisation texture and texture-related properties in industrial production of aluminium sheet
- The combined effect of static recrystallization and twinning on texture in magnesium alloys AM30 and AZ31
- Comparison of damage development depending on the local microstructure in low alloyed Al-TRIP-steels, IF steel and a DP steel
- Nanoindentation of Ti50Ni48Fe2 and Ti50Ni40Cu10 shape memory alloys
- Early detection of crack initiation sites in TiAl alloys during low-cycle fatigue at high temperatures utilizing digital image correlation
- Superplastic failure mode in ultrafine grained magnesium alloy AZ31
- High temperature magnetic strengthening in iron-based alloys: Magnetic effects on deformation and fracture, revisited
- Notification
- DGM News
Articles in the same Issue
- Contents
- Contents
- Editorial
- Prof. Dr. Günter Gottstein
- Feature
- Interface Migration in Metals (IMM):“Vingt Ans Après” (Twenty Years Later)
- Basic
- On the solute-defect interaction in the framework of a defactant concept
- A new model of dynamic recovery for Stage III of pure fcc metals without cross slip
- Sequence of distinct microyielding stages of the monocrystalline nickel-base superalloy CMSX-6 at high temperatures
- Comparison of texture evolution in fcc metals predicted by various grain cluster homogenization schemes
- Recrystallization initiated by low-temperature grain boundary motion coupled to stress
- Sub-grain boundary mobilities during recovery of binary Al–Mn alloys
- Concentration phase transition associated with grain boundary segregation in systems with restricted solubility
- Second-order faceting–roughening of the tilt grain boundary in zinc
- A model of grain boundary diffusion in polycrystals with evolving microstructure
- Linear measures for polyhedral networks
- Testing a curvature driven moving finite element grain growth model with the generalized three dimensional von Neumann relation
- Grain-boundary source/sink behavior for point defects: An atomistic simulation study
- Applied
- Deformation modes and anisotropy in magnesium alloy AZ31
- Control of recrystallisation texture and texture-related properties in industrial production of aluminium sheet
- The combined effect of static recrystallization and twinning on texture in magnesium alloys AM30 and AZ31
- Comparison of damage development depending on the local microstructure in low alloyed Al-TRIP-steels, IF steel and a DP steel
- Nanoindentation of Ti50Ni48Fe2 and Ti50Ni40Cu10 shape memory alloys
- Early detection of crack initiation sites in TiAl alloys during low-cycle fatigue at high temperatures utilizing digital image correlation
- Superplastic failure mode in ultrafine grained magnesium alloy AZ31
- High temperature magnetic strengthening in iron-based alloys: Magnetic effects on deformation and fracture, revisited
- Notification
- DGM News