Observations of grain boundary protrusions in static recrystallization of high-purity bcc metals

被引：27
作者：
Martorano, M. A.
Sandim, H. R. Z.
Fortes, M. A.
Padilha, A. F.
机构：
[1] Univ Sao Paulo, Dept Engn Met & Mat, BR-05508900 Sao Paulo, Brazil
[2] Inst Super tecn, Dept Engn Mat, P-1049001 Lisbon, Portugal
来源：
SCRIPTA MATERIALIA | 2007年 / 56卷 / 10期
基金：
巴西圣保罗研究基金会;
关键词：
serrated boundaries; grain boundary migration; recrystallized microstructure; static recrystallization;
D O I：
10.1016/j.scriptamat.2007.01.032
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Protrusions at migrating high-angle grain boundaries were observed following partial recrystallization of high-purity body-centred cubic refractory metals. Their morphology is similar to that previously observed in aluminium and is in good agreement with the predictions of a kinetic model based on the sinusoidal variation of the local driving pressure along the boundary. The heterogeneous dislocation structure intersecting the boundary is considered to cause this sinusoidal variation and, therefore, the growth of protrusions in the high-purity metals. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：903 / 906
页数：4
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