Length scale effects on recrystallization and texture evolution in Cu layers of a roll-bonded Cu–Nb composite
Length scale effects on recrystallization and texture evolution in Cu layers of a roll-bonded Cu–Nb composite
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DOI：
10.1016/j.msea.2009.05.020
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发表时间：
2009-09
期刊：
影响因子：
6.4
通讯作者：
S. Lim;A. Rollett
中科院分区：
文献类型：
--
作者：
S. Lim;A. Rollett
研究了纯Cu和Cu + Nb复合轧制复合材料薄层中的再结晶织构。X射线织构分析表明，轧制后的纯铜再结晶后，立方取向是主要的织构成分，而再结晶后的合金Cu的织构主要成分为{215}和B/S。然而，在复合材料中，当层厚度进入亚微米制度时，在纯铜和合金化Cu层中退火期间保留轧制织构。这是由于再结晶驱动压力的降低阻碍了再结晶晶粒的形核和生长，而层厚效应限制了晶界的移动和生长。引入了一个新的术语-“限制再结晶”，以更准确地描述退火后在亚微米厚层内观察到的形态演变，并突出了与简单回复或连续再结晶的对比。
Recrystallization textures were investigated in thin layers of both pure Cu and alloyed Cu combined with Nb in roll-bonded composites. Texture analysis using X-ray revealed that Cube orientation was the dominant texture component after recrystallization in rolled monolithic pure Cu whereas {215} 〈211〉 and B/S were the dominant components for the recrystallized alloyed Cu. In the composites, however, the rolling texture is retained during annealing in both the pure Cu and the alloyed Cu layers when the layer thickness enters the sub-micron regime. This is attributed to the nucleation and growth of recrystallizing grains being impeded via a reduction in recrystallization driving pressure and the grain boundary movement and growth being limited due to the layer thickness effect. A new term—“confined recrystallization” was also introduced to describe more accurately the morphological evolution observed within the sub-micron thick layers after annealing and highlights the contrast to either simple recovery or continuous recrystallization.