Orientation-dependent stored energies in hot deformed Al-2.5%Mg and their influence on recrystallization
Orientation-dependent stored energies in hot deformed Al-2.5%Mg and their influence on recrystallization
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DOI：
10.1016/j.actamat.2004.03.037
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发表时间：
2004-07
期刊：
影响因子：
9.4
通讯作者：
G. Guiglionda;A. Borbély;J. Driver
中科院分区：
文献类型：
--
作者：
G. Guiglionda;A. Borbély;J. Driver
本文用高分辨X射线衍射法测定了Al-2.5%Mg合金高温平面应变压缩后各织构组分中的位错密度。在400 °C和应变高达1.5的变形后，位错密度范围为2至20× 1013 m −2。高能同步加速器（欧洲同步辐射装置，ESRF）透射峰分析和标准反射线分析表明，S {1 2 3}组件比立方体、黄铜{0 1 1}和戈斯{0 1 1}组件产生显著更高的储存能量。在随后的退火到部分再结晶后，EBSD取向图在大面积上表明，高能量的S组分优先消耗的再结晶。立方再结晶织构的发展是由于形核频率的优势，所施加的应变的函数。
The dislocation densities in individual texture components of a hot, plane strain compressed, Al–2.5%Mg alloy have been determined by high resolution X-ray diffraction using recent methods for peak broadening interpretation. After deformation at 400 °C and strains up to 1.5 dislocation densities range from 2 to 20×1013m−2. Both high energy synchrotron (European synchrotron radiation facility, ESRF) transmission peak analysis and standard reflection line analysis show that the S {1 2 3}〈4 1 2〉 component develops significantly higher stored energies than the cube, brass {0 1 1}〈2 1 1〉 and Goss {0 1 1}〈1 0 0〉 components. After subsequent annealing to partial recrystallization, EBSD orientation maps over large areas demonstrate that the high energy S component is preferentially consumed by recrystallization. It is also shown that the development of the cube recrystallization texture is due to a nucleation frequency advantage, function of the applied strain.