3104鋁合金熱粗軋板的織構(gòu)梯度及其對熱壓縮變形后退火織構(gòu)演變的影響
發(fā)布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-12-24
采用X-ray衍射和光學顯微鏡對AA3104鋁合金熱粗軋板沿厚向的織構(gòu)和組織進行研究。
3104鋁合金熱粗軋板的織構(gòu)梯度及其對熱壓縮變形后退火織構(gòu)演變的影響Texture gradient in rough-rolled plate of aluminum alloy 3104?and its effect on annealing textures evolution after hot compression采用X-ray衍射和光學顯微鏡對AA3104鋁合金熱粗軋板沿厚向的織構(gòu)和組織進行研究。結(jié)果表明：熱粗軋板中存在明顯的組織和織構(gòu)梯度現(xiàn)象；在表層及次表層，剪切織構(gòu)占主導地位，表現(xiàn)為較強的旋轉(zhuǎn)立方織構(gòu)R-cube {001}á110?和{112}á110?織構(gòu)，顯微組織以再結(jié)晶組織為主；在中心層及過渡層，則以典型的形變織構(gòu)(即Cu{112}á111?、S{123}á634?和Bs{011}á211?)及熱變形流線組織為主；這種沿厚度方向的組織和織構(gòu)梯度對熱變形后再結(jié)晶織構(gòu)也有很大影響，熱粗軋板中原始的剪切織構(gòu)有助于退火后立方織構(gòu)的形成，而原始中心層的形變織構(gòu)會促使熱變形退火后產(chǎn)生{111}á110?剪切織構(gòu)和P織構(gòu)。
The textures and microstructures along rough-rolled plate aluminum alloy 3104 were investigated by X-ray diffractometry and optical microscopy, respectively. The results show that a pronounced through-thickness texture and microstructure gradient is found in the rough-rolled plate. At the surface and sub-surface layers, the dominant texture and microstructure are shear textures (strong R-cube{001}á110? and {112}á110?) and recrystallization microstructure, respectively. While at the center and intermediate layers, the typical β-fiber texture of Cu{112}á111?, S{123}á634? and Bs{011}á211?, and a fibrous microstructure characterized by banded-like structure is observed. This kind of through-thickness texture and microstructure gradient have strong influence on the recrystallization texture after hot compression, i.e., the rolling shear textures are changed to cube texture, while the other deformation textures are rotated to the {111}á110? and P orientation during the annealing after hot compression.
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