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3104鋁合金熱粗軋板的織構梯度及其對熱壓縮變形后退火織構演變的影響2017-02-09 15:30來源：中鏨集團SinoAV作者：通項公司TXCO
3104鋁合金熱粗軋板的織構梯度及其對熱壓縮變形后退火織構演變的影響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和組織進行研究。結果表明：熱粗軋板中存在明顯的組織和織構梯度現象；在表層及次表層，剪切織構占主導地位，表現為較強的旋轉立方織構R-cube {001}á110?和{112}á110?織構，顯微組織以再結晶組織為主；在中心層及過渡層，則以典型的形變織構(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梯度對熱變形后再結晶織構也有很大影響，熱粗軋板中原始的剪切織構有助于退火后立方織構的形成，而原始中心層的形變織構會促使熱變形退火后產生{111}á110?剪切織構和P織構。 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. 上一篇： 2E12鋁合金的高溫塑性變形流變應力行為
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