(燕山大學(xué) 材料科學(xué)與工程學(xué)院 亞穩(wěn)材料制備技術(shù)與科學(xué)國家重點(diǎn)實(shí)驗(yàn)室，秦皇島 066004)
摘 要: 采用X射線衍射儀研究3105鋁合金在橫軋過程中織構(gòu)的演變。結(jié)果表明：3105鋁合金熱軋板材具有強(qiáng)的β纖維軋制織構(gòu)，在橫軋過程中B¢{110}á111ñ、S¢{123}<17229>和C¢{112}á110ñ取向是不穩(wěn)定的，它們將逐漸向新的坐標(biāo)系中β纖維的位置旋轉(zhuǎn)；隨橫軋壓下量增大，C¢和S¢取向強(qiáng)度快速降低，B¢取向強(qiáng)度先增加后降低，而β纖維軋制織構(gòu)的強(qiáng)度逐漸增加；β纖維和剩余組分織構(gòu)體積分?jǐn)?shù)的變化與軋制真應(yīng)變的關(guān)系遵循Avrami方程，強(qiáng)的初始B¢、S¢和C¢織構(gòu)顯著地提高了β纖維織構(gòu)的形成速率。
關(guān)鍵字: 鋁合金；橫軋；織構(gòu)
cross-rolled 3105 aluminum alloy
（State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering,
Yanshan University, Qinhuangdao 066004, China）
Abstract:The hot band of continuous cast 3105 aluminum alloy was cold rolled to different reductions along the original transverse direction. The texture evolution during cross-rolling was investigated by X-ray diffractometry. The results show that the hot band of 3105 aluminum alloy possesses a strong b fiber rolling texture. After 90˚ rotation about the normal direction, the typical B, S and C orientations on the b fiber transform into the B¢{110}á111ñ, S¢{123}á17229ñ and C¢{112}á110ñ orientations. These orientations are unstable and gradually rotate to the b fiber in the new sample reference frame. As the rolling reduction increases, the intensities of the C¢ and S¢ orientations decrease, while the intensity of the B¢ orientation first increases and then decreases. At the same time, the strength of the b fiber rolling texture increases with increasing rolling reduction. The variation in the volume fractions of the b fiber and remainder components with rolling true strain follows the Avrami equation. The strong initial B¢, S¢ and C¢ textures significantly increase the formation rate of the b fiber rolling texture.
Key words: aluminum alloy; cross-rolling; texture
