2001
DOI: 10.1007/s11661-001-0063-4
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The dependence of normal and abnormal grain growth in silver on annealing temperature and atmosphere

Abstract: When polycrystalline pure Ag specimens are compressed to 40 pct and annealed, there is no noticeable texture in the recrystallized structure, and normal or abnormal grain growth occurs during annealing. When annealed further in low vacuum (10 Ϫ3 to 10 Ϫ4 Torr) after the completion of recrystallization, normal grain growth occurs at 920 ЊC and 800 ЊC, but abnormal grain growth (AGG) occurs at 700 ЊC, 600 ЊC, and 500 ЊC. When annealed in O 2 atmosphere, normal grain growth occurs at 920 ЊC and AGG at 800 ЊC, 700… Show more

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Cited by 72 publications
(60 citation statements)
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“…It is likely that these grain boundaries were actually rough with curved shapes at the annealing temperatures and the fine scale h&v structures formed during cooling. If the grain boundaries undergo roughening-singular transitions, their structures at low temperatures will depend on the cooling rate.The correlation between the grain boundary roughening transition and the change of grain growth mode from AGG to NGG is also consistent with the previous observations in metals 13,14,[16][17][18] and oxides. 19,20) As proposed earlier, 31,32) if the singular grain boundaries migrate by the movement of existing steps or those produced by two dimensional nucleation, [21][22][23][24][25][26] v(F) will be non-linear as observed by Tsurekawa et al 30) In polycrystals with singular grain boundaries, non-linear v(F) will cause AGG as confirmed by simulation.…”
supporting
confidence: 91%
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“…It is likely that these grain boundaries were actually rough with curved shapes at the annealing temperatures and the fine scale h&v structures formed during cooling. If the grain boundaries undergo roughening-singular transitions, their structures at low temperatures will depend on the cooling rate.The correlation between the grain boundary roughening transition and the change of grain growth mode from AGG to NGG is also consistent with the previous observations in metals 13,14,[16][17][18] and oxides. 19,20) As proposed earlier, 31,32) if the singular grain boundaries migrate by the movement of existing steps or those produced by two dimensional nucleation, [21][22][23][24][25][26] v(F) will be non-linear as observed by Tsurekawa et al 30) In polycrystals with singular grain boundaries, non-linear v(F) will cause AGG as confirmed by simulation.…”
supporting
confidence: 91%
“…Normal grain growth occurred at these temperatures. This correlation between the grain boundary structure and grain growth is similar to those found in other metals [13][14][15][16][17][18] and oxides. 19,20) The results of this study thus confirm that AGG can arise from the singular grain boundary structure without any precipitates, surface energy anisotropy, or texture.…”
supporting
confidence: 86%
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